Aeroacoustic simulation work on turbomachinery noise at DLR
|
|
|
- Lambert Mason
- 6 years ago
- Views:
Transcription
1 Chart 1 > Standard presentation > Jan Aeroacoustic simulation work on turbomachinery noise at DLR Sebastien Guerin and Lars Enghardt German Aerospace Center (DLR) Institute of Propulsion Technology Engine Acoustics, Berlin
2 DLR German Aerospace Center Research Institution Space Agency Project Management Agency Research Areas - Aeronautics - Space - Transport - Energy - Safety and Security
3 DLR: Sites and employees employees working in 32 research institutes and facilities at 16 Sites. Offices in Brussels, Paris and Washington. Sites of the Institute of Propulsion Technologies (~180 employees) Department of Engine Acoustics is located in Berlin (~30 employees) Stade Hamburg Bremen- Trauen Neustrelitz Berlin- Braunschweig Göttingen Jülich Köln Bonn Lampoldshausen Stuttgart Augsburg Oberpfaffenhofen Weilheim
4 Engine Noise Analysis of Fan- and Compressor Noise Combustion Noise Turbine Noise Jet Noise Reduction by Innovative Noise Abatement Methods Noise Control Liners Design-to-noise Pre-design Methods: - numerical - experimental - analytical
5 Engine Noise Analysis of Fan- and Compressor Noise Combustion Noise Turbine Noise Jet Noise Reduction by Innovative Noise Abatement Methods Noise Control Liners Design-to-noise Pre-design Methods: - numerical - experimental - analytical
6 Slide # 6 Outline Our Software Towards a Standard Process for Tonal Noise Simulation Contra-Rotating Open Rotors Harmonic Balance Applied to High-Pressure Turbine Broadband Noise Simulation with FanRPM Conclusion & Outlook
7 Slide # 7 Outline Our Software Towards a Standard Process for Tonal Noise Simulation Contra-Rotating Open Rotors Harmonic Balance Applied to High-Pressure Turbine Broadband Noise Simulation with FanRPM Conclusion & Outlook
8 Slide # 8 Our Software: CFD solver TRACE - CFD tool TRACE (Turbomachinery Research Aerodynamic Computational Environment) - Developed by the Department Numerical Methods in Cologne: team of about 15 developers - Used by MTU for production and more than 10 Universities in Germany - Finite Volume method for structured and unstructured grids - Various solvers - Non-linear TRACE (RANS, URANS, scale-resolved simulations) - LinearTRACE (time linearized with GMRES solver) - Harmonic Balance (non-linear frequency domain with pseudo-time solver) - Turbulence models: Wilcox k-omega, Spalart-Allmaras, SST k-omega, RSM, transition, etc. - Boundary conditions: mixing plane, zonal interface, phase lag, Giles1 & 2, and 3D NRBC
9 Slide # 9 Our Software: CAA solver PIANO - CAA tool PIANO (Perturbed Investigation of Aerodynamic Noise) - Developed by the DLR Department Technical Acoustics in Braunschweig: team of about 5 developers - Used by AIRBUS, Rolls-Royce and several German Universities - Finite-difference method in time-domain - High-order space and time discretization - Boundary conditions: radiation boundary conditions, Extended Helmholtz Resonator (liner), Perfectly Matched Layer
10 Slide # 10 Outline Our Software Towards a Standard Process for Tonal Noise Simulation Contra-Rotating Open Rotors Harmonic Balance Applied to High-Pressure Turbine Broadband Noise Simulation with FanRPM Conclusion & Outlook
11 Slide # 11 Presented by Lars Enghardt, 29th of April 2014 From Nearfield to Farfield (1) Far field Induct region Source region
12 Slide # 12 From Nearfield to Farfield (2) Distance to source Navier- Stokes Eq. DNS LES URANS (RANS) Linearized Euler Equations Source Viscosity Non-linearities Refraction Diffraction Near field CFD (TRACE) CAA (PIANO) (convective) Wave Equation Far field Interference FW H
13 Slide # 13 FW H Solver for Axisymmetrical Surfaces Freq. domain convective FW H formulation (surface integral): Azimuthal decomposition of the flow field FW H for axisymmetrical Surfaces (line integration): Reduction of computing time Reduction of data storage Increase of accuracy Elegant coupling to TRACE
14 Outline Our Software Towards a Standard Process for Tonal Noise Simulation Contra-Rotating Open Rotors Harmonic Balance Applied to High-Pressure Turbine Broadband Noise Simulation with FanRPM Conclusion & Outlook
15 Slide # 15 Contra-Rotating Open Rotor Noise Fligthglobal/Tim Becheno-Brown AI-PX7 CROR concept of Airbus
16 Slide # 16 Nearfield Calculation with TRACE Multi-block structured grid Turbulence model: Wilcox k-ω 2nd order discretization in time and space 0 AoA, no pylon One segment/blade per rotor ~ 7 Mio cells
17 Slide # 17 Farfield Extrapolation with FW H - TRACE results in relative system - FWH-method in absolute system - Transformation from relative into absolute system necessary - Use of the (m, ) transformation Pressure field on the surface BPF 1R(ear) BPF 1F(ront) BPF 1F+1R BPF 1F+2R
18 Slide # 18 Farfield Extrapolation with FW H Spurious noise induced by vortices cutting the exit plane Split between acoustic and aerodynamic contributions would be necessary IS1 to IS4 Sliding interface Variation of the integration surface OS1 to OS4
19 Slide # 19 Application: Trailing-Edge Serrations on Front Rotor - EU JTI Clean Sky - Reduction of interaction tones through serrations - Numerical approach with TRACE FWH - Acoustic optimisation ongoing baseline serrated TE
20 Outline Our Software Towards a Standard Process for Tonal Noise Simulation Contra-Rotating Open Rotors Harmonic Balance Applied to High-Pressure Turbine Broadband Noise Simulation with FanRPM Conclusion & Outlook
21 EU Project RECORD - Combustion (direct) noise generation, transmission, and production of indirect noise through interaction of combustion hot turbulent field with HPT turbine - WP3: high-pressure turbine test case HPT rig in Politecnico di Milano
22 Why Harmonic Balance? - Reduced computation - time HB/URANS 1/10 - Frequency domain formulation advantageous for handling of boundary conditions - Phase lag/shift - Non reflecting boundary conditions - Enable to prescribe perturbations at a frequency different from the base frequency
23 Matrix of Numerical Tests short Fine grid (7.0 Mio cells) Reference RANS URANS long* URANS short* HB long/short* Giles 2D (Fourier) Giles 1D in time domain Giles 2D in frequency domain Giles 2D in frequency domain Periodic Phase-lag Phase-Lag Phase-lag Mixing plane Zonal interface + Phase-lag long Zonal Interface + Phase-lag *short: w/o damping zone; long: with damping zone Giles 2D in frequency domain
24 10 db Acoustic Power Levels of Sources and Reflexions
25 Outline Our Software Towards a Standard Process for Tonal Noise Simulation Contra-Rotating Open Rotors Harmonic Balance Applied to High-Pressure Turbine Broadband Noise Simulation with FanRPM Conclusion & Outlook
26 Slide # 26 Presented by Lars Enghardt, 29th of April 2014 RANS-based Fan Broadband Noise Simulation Instantanious plot of the source strength on the impulse equation - Ewert et al. developed the Random-Particle-Mesh to synthesize turbulence sources - Local realization of the RANS statistics - Aim: fan broadband noise simulation for (cyclostationary) wake turbulence
27 Slide # 27 RANS-based Fan Broadband Noise Simulation - Turbulence synthesizer (frpm) with turbulence characteristics from a (U)RANS (TRACE) radiated by CAA in time domain (PIANO) - Participation in Fan-Broadband-Noise panel session at AIAA 2014 Turbulence-airfoil interaction noise (frozen turbulence) Validation cases Quadrupole noise (evolving turbulence) General turbulence spectra via hierarchy of superposed Gaussian-filtered stochastic fields q3d rotor-stator interaction noise
28 Slide # 28 Conclusion - Computational Aeroacoustics applied to engine noise is well established - We rely on in-house tools: TRACE and PIANO - Many efforts to improve acoustic post-processing - A standard chain of tools is available
29 Slide # 29 Presented by Lars Enghardt, 29th of April 2014 Outlook - Improvement of post-processing - Acoustic mode analysis for complex ducted flows - Improved FW H - Efficient tonal noise prediction with HB - Prediction of broadband noise - RPM method for fans - Jet noise: activity regrouped in another team led by R. Meyer - Design-to-noise optimization using RANS informed analytical prediction - etc.
30 Acknowledgements Main Contributors: Attila Wohlbrandt, Christian Weckmüller, Robert Jaron, Axel Holewa
FAPESP AND THE STRATEGIC PROGRAMS TO FOSTER INTERNATIONAL COLLABORATION AND INNOVATION IN THE STATE OF SÃO PAULO
THE RLS - Digital Network FAPESP AND THE STRATEGIC PROGRAMS TO FOSTER INTERNATIONAL COLLABORATION AND INNOVATION IN THE STATE OF SÃO PAULO João Luiz F. Azevedo Engineering Coordination FAPESP FAPESP São
Vibration Analysis & Practical Solutions
Training Title Vibration Analysis & Practical Solutions Training Duration 5 days Training Venue and Dates Vibration Analysis & Practical Solutions 5 05-09 February $3,300 Abu Dhabi In any of the 5 star
Automation in production integrated NDT using thermography NDT in Aerospace - Augsburg Thomas Schmidt, Somen Dutta
Automation in production integrated NDT using thermography NDT in Aerospace - Augsburg 2012 Thomas Schmidt, Somen Dutta www.dlr.de Chart 2 NDT in Aerospace 2012 > Automation in production integrated NDT
Technical Discussion HUSHCORE Acoustical Products & Systems
What Is Noise? Noise is unwanted sound which may be hazardous to health, interfere with speech and verbal communications or is otherwise disturbing, irritating or annoying. What Is Sound? Sound is defined
University Turbine System Research (UTSR) 2013 Gas Turbine Industrial Fellowship Program
University Turbine System Research (UTSR) 2013 Gas Turbine Industrial Fellowship Program VALIDATION OF THE FLAMELET-GENERATED MANIFOLDS COMBUSTION MODEL FOR GAS TURBINE ENGINE APPLICATIONS USING ANSYS
Blood Flow Simulation toward Actual Application at Hospital
THE 5 TH ASIAN COMPUTAITIONAL FLUID DYNAMICS BUSAN, KOREA, OCTOBER 27 ~ OCTOBER 30, 2003 Blood Flow Simulation toward Actual Application at Hospital Abstract R. Himeno 1 1. Advanced Center for Computing
How NDT will underpin the certification of greener aircraft
How NDT will underpin the certification of greener aircraft Robert A Smith Professor of NDT and High Value manufacturing, University of Bristol. President British Institute of NDT Acknowledgements Prof
Noise Control, Aeroacoustics And NVH
Control, And NVH ADVANCED COURSES 10-14 September 2018 ADVANCED COURSES Course features World-class lecturers: the course presents a unique opportunity to learn from and talk to lecturers at the very forefront
International Liaison: ISVR Overview CAV workshop, Penn State Univ. May
International Liaison: ISVR Overview CAV workshop, Penn State Univ. May 3-4 2010 ISVR Annual report 2009-2010 Fluid Dynamics and Acoustics Group Dynamics Group Human Sciences Group Signal Processing Group
Numerical investigation of the turbulent flow around a bridge abutment
River Flow 2006 Ferreira, Alves, Leal & Cardoso (eds) 2006 Taylor & Francis Group, London, ISBN 0-415-40815-6 Numerical investigation of the turbulent flow around a bridge abutment A. Teruzzi & F. Ballio
INTERNATIONAL MODULE SYLLABUS W503 NOISE MEASUREMENT AND ITS EFFECTS
OHTA INTERNATIONAL MODULE SYLLABUS W503 NOISE MEASUREMENT AND ITS EFFECTS Aim Learning Outcomes To provide the student with an appreciation of the nature of noise hazards in the workplace and the effects
Research on a Transmit-Receive Method of Ultrasonic Array for Planar Defects
7 th Asia-Pacific Workshop on Structural Health Monitoring November 12-15, 2018 Hong Kong SAR, P.R. China Research on a Transmit-Receive Method of Ultrasonic Array for Planar Defects Zhenggan Zhou 1,2,3
Overview of ISVR CAV Workshop 2011
Overview of ISVR CAV Workshop 2011 New Faculty Structure FACULTY ST UDENT S (FTE) ACADEMIC STAFF (FT E) NON- ACADEMIC ST A FF (FT E) TURNOVER ( M) Hum anities 2721 199 72 18 Business & Law 1726 96 41 11
BOHS / OHlearning Course Specification
BOHS / OHlearning Course Specification Course Title Noise Measurement and Its Effects Code W503 Level Foundation Intermediate Advanced Other Pre-requisites None Coordinating Editor Bruce Gantner Approval
CST STUDIO SUITE CST workshop series 2010 February 10 1
CST STUDIO SUITE 2010 www.cst.com CST workshop series 2010 February 10 1 Frontend www.cst.com CST workshop series 2010 February 10 2 Import/Export Upgrade to ACIS 20 Update to CATIA 5 R19, PRO/E Wildfire
Contents 1 Computational Haemodynamics An Introduction 2 The Human Cardiovascular System
Contents 1 Computational Haemodynamics An Introduction... 1 1.1 What is Computational Haemodynamics (CHD)... 1 1.2 Advantages of CHD... 3 1.3 Applications in the Cardiovascular System... 4 1.3.1 CHD as
ISSUES ON COMPUTATIONAL MODELING FOR COMPUTATION-AIDED DIAGNOSIS 臨床診断支援ツールのための計算力学モデリング
ISSUES ON COMPUTATIONAL MODELING FOR COMPUTATION-AIDED DIAGNOSIS 臨床診断支援ツールのための計算力学モデリング Hao LIU Advanced Computer and Information Division, RIKEN 2-1, Hirosawa, Wako-shi, Saitama 351-0198 JAPAN e-mail:
EARLY STAGE DIAGNOSIS OF LUNG CANCER USING CT-SCAN IMAGES BASED ON CELLULAR LEARNING AUTOMATE
EARLY STAGE DIAGNOSIS OF LUNG CANCER USING CT-SCAN IMAGES BASED ON CELLULAR LEARNING AUTOMATE SAKTHI NEELA.P.K Department of M.E (Medical electronics) Sengunthar College of engineering Namakkal, Tamilnadu,
Simulation of Chemotractant Gradients in Microfluidic Channels to Study Cell Migration Mechanism in silico
Simulation of Chemotractant Gradients in Microfluidic Channels to Study Cell Migration Mechanism in silico P. Wallin 1*, E. Bernson 1, and J. Gold 1 1 Chalmers University of Technology, Applied Physics,
Turbine 3.5 MW. enovation for efficiency.
Turbine 3.5 MW enovation for efficiency www.eno-energy.com eno 126 enovation for efficiency Leading Edge The optimized aerodynamic rotor and advanced carbon fibre technology of the eno 126 are the reasons
There will be a 40 short answer question open book examination with an allowed time of 120 minutes.
Course Specification Course Title Noise Measurement and Its Effects Code W503 Level Foundation Intermediate Advanced Pre-requisites None Course Material Course manual available from OH learning.com Coordinating
Flow simulation in 3D Discrete Fracture Networks (DFN)
Reconstructed Fracture Network Flow simulation (Connected fractures) Flow simulation in 3D Discrete Fracture Networks (DFN) Jean-Raynald de Dreuzy, Géraldine Pichot, Patrick Laug, Jocelyne Erhel Géosciences
Low Frequency th Conference on Low Frequency Noise
Low Frequency 2012 15th Conference on Low Frequency Noise Stratford-upon-Avon, UK, 12-14 May 2012 Enhanced Perception of Infrasound in the Presence of Low-Level Uncorrelated Low-Frequency Noise. Dr M.A.Swinbanks,
Effective Airflow Visualization Studies. Gordon Farquharson, July 2017
Effective Airflow Visualization Studies Gordon Farquharson, July 2017 Slide 1 PharmOut 2017 Agenda Regulatory imperative Role of CFD Air velocity measurements Airflow visualisation to prove effectiveness
Can You Hear Me Now?
An Introduction to the Mathematics of Hearing Department of Applied Mathematics University of Washington April 26, 2007 Some Questions How does hearing work? What are the important structures and mechanisms
Routine Quality Assurance Cookbook
This Cookbook is a companion guide to the AIUM Routine Quality Assurance (QA) for Diagnostic Ultrasound Equipment document, which outlines the basic QA requirements for AIUM-accredited practices. The Guide
Ultrasonic Testing Level I:
Ultrasonic Testing Level I: 1- Sound Wave - Introduction - ASNT Level I - Sound Wave Propagation - Velocity / Frequency / Wave Length - Acoustic Impedance - Energy / Intensity 2- Ultrasound Wave Modes
ACOUSTORAPHY Acousto-Optical (AO) Ultrasonics & Its Applications
ACOUSTORAPHY Acousto-Optical (AO) Ultrasonics & Its Applications International Workshop on Imaging NDE April 2007 IGCAR, kalpakkam, India Dr D S Dulay NDT Consultants Limited Middlemarch House, Siskin
Lesson 03: Sound Wave Propagation and Reflection. This lesson contains 15 slides plus 14 multiple-choice questions.
Lesson 03: Sound Wave Propagation and Reflection This lesson contains 15 slides plus 14 multiple-choice questions. Accompanying text for the slides in this lesson can be found on pages 8 through 14 in
Medical device design using Computational Fluid Dynamics (CFD)
Medical device design using Computational Fluid Dynamics (CFD) Session: Winter 2016 IMPORTANT NOTE: This project has 8 deliverables, for each one timely work is expected. 1. General Design Specifications
DOUBLE-DEGREE Program 1A 2A
25/01/2017 DOUBLE-DEGREE Program 1A 2A Semester S5 ECS - Electrical energy and Systems Control 6 ECS tc 0 Autonomous work 24 ECS tc 1 Electrical Energy 32 ECS tc 2 Linear Control 32 ECS tc 3 Control and
Linear Ultrasonic Wave Propagation in Biological Tissues
Indian Journal of Biomechanics: Special Issue (NCBM 7-8 March 29) Linear Ultrasonic Wave Propagation in Biological Tissues Narendra D Londhe R. S. Anand 2, 2 Electrical Engineering Department, IIT Roorkee,
CFD ANALYSIS OF THE PERFORMANCE OF A FAST CATAMARAN WITH ROUGH SEA
STAR EUROPEAN CONFERENCE 2011 Amsterdam, 22 23 March CFD ANALYSIS OF THE PERFORMANCE OF A FAST CATAMARAN WITH ROUGH SEA G. Lombardi, M. Maganzi Dept. of Aerospace Engineering of Pisa Italy The Problem
Combining imaging techniques and CFD to model lung deposition in various age classes of the paediatric population
Combining imaging techniques and CFD to model lung deposition in various age classes of the paediatric population Contents: Motivation: Why modelling the paediatric dose to lung via in-vitro and in-silico
The Use of Physics-Based Modeling to Better Design Drug- Device Interface. Yoen-Ju Son, PhD Merck Research Laboratory, Summit, NJ
The Use of Physics-Based Modeling to Better Design Drug- Device Interface Yoen-Ju Son, PhD Merck Research Laboratory, Summit, NJ Presentation Outline Physics-based modeling in pharmaceutical industry Pulmonary
Block-upscaling of transport in heterogeneous aquifers
158 Calibration and Reliability in Groundwater Modelling: From Uncertainty to Decision Making (Proceedings of ModelCARE 2005, The Hague, The Netherlands, June 2005). IAHS Publ. 304, 2006. Block-upscaling
ULTRASOUND IMAGING EE 472 F2018. Prof. Yasser Mostafa Kadah
ULTRASOUND IMAGING EE 472 F2018 Prof. Yasser Mostafa Kadah www.k-space.org Recommended Textbook Diagnostic Ultrasound: Physics and Equipment, 2nd ed., by Peter R. Hoskins (Editor), Kevin Martin (Editor),
Simultaneous Vibration and Noise Reduction in Rotorcraft Practical Implementation Issues
46th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics & Materials Conference 8 - April 5, Austin, Texas AIAA 5-45 Simultaneous Vibration and Noise Reduction in Rotorcraft Practical Implementation
Binaural Hearing. Steve Colburn Boston University
Binaural Hearing Steve Colburn Boston University Outline Why do we (and many other animals) have two ears? What are the major advantages? What is the observed behavior? How do we accomplish this physiologically?
On The Use of the Equivalent Source Method for Nearfield Acoustic Holography
On The Use of the Equivalent Source Method for Nearfield Acoustic Holography Marcos Eduardo Vieira Pinho mpinho@fem.unicamp.br José Roberto de França Arruda arruda@fem.unicamp.br Departamento de Mecânica
Detailed Syllabus. Waves and Modern Physics Spring 2011
Detailed Syllabus Waves and Modern Physics Spring 2011 Prof. Antonio Badolato Date Lecture Topics; Chapters from Books (G = Giancoli) Homework (HW) and Recitation (R) Assignments 12 Jan, Wed Oscillations:
Proceedings of Meetings on Acoustics
Proceedings of Meetings on Acoustics Volume 19, 2013 http://acousticalsociety.org/ ICA 2013 Montreal Montreal, Canada 2-7 June 2013 Speech Communication Session 4aSCb: Voice and F0 Across Tasks (Poster
Deposited on: 21 January 2009
Paul, M.C. and Molla, M.M. and Roditi, G. (2009) Large-Eddy simulation of pulsatile blood flow. Medical Engineering and Physics, 31 (1). pp. 153-159. ISSN 1350-4533 http://eprints.gla.ac.uk/4891/ Deposited
Proceedings of Meetings on Acoustics
Proceedings of Meetings on Acoustics Volume 19, 13 http://acousticalsociety.org/ ICA 13 Montreal Montreal, Canada - 7 June 13 Engineering Acoustics Session 4pEAa: Sound Field Control in the Ear Canal 4pEAa13.
A NOVEL HEAD-RELATED TRANSFER FUNCTION MODEL BASED ON SPECTRAL AND INTERAURAL DIFFERENCE CUES
A NOVEL HEAD-RELATED TRANSFER FUNCTION MODEL BASED ON SPECTRAL AND INTERAURAL DIFFERENCE CUES Kazuhiro IIDA, Motokuni ITOH AV Core Technology Development Center, Matsushita Electric Industrial Co., Ltd.
Auditory/acoustic feedback to optimise the boat motion
Movement & Sound Auditory/acoustic feedback to optimise the boat motion causal relationship sound is the acoustic consequence of kinetic events (Bruhn, Kopiez & Lehmann, 008) Dr. Nina Schaffert & Prof.
Topic 4. Pitch & Frequency
Topic 4 Pitch & Frequency A musical interlude KOMBU This solo by Kaigal-ool of Huun-Huur-Tu (accompanying himself on doshpuluur) demonstrates perfectly the characteristic sound of the Xorekteer voice An
TTU Phased Array: Quality and Productivity
6th International Symposium on NDT in Aerospace, 12-14th November 2014, Madrid, Spain - www.ndt.net/app.aerondt2014 TTU Phased Array: Quality and Productivity More Info at Open Access Database www.ndt.net/?id=16959
3-D Sound and Spatial Audio. What do these terms mean?
3-D Sound and Spatial Audio What do these terms mean? Both terms are very general. 3-D sound usually implies the perception of point sources in 3-D space (could also be 2-D plane) whether the audio reproduction
Study of Cavitation Instabilities in Double- Suction Centrifugal Pump
nternational Journal of Fluid Machinery and Systems DO: http://dx.doi.org/10.5293/jfms.2014.7.3.094 Vol. 7, No. 3, July-September 2014 SSN (Online): 1882-9554 Original Paper (nvited) Study of Cavitation
Active Thermography NDT Method for Structural Adhesive and Mechanical Joints
Platzhalter für Bild, Bild auf Titelfolie hinter das Logo einsetzen Active Thermography NDT Method for Structural Adhesive and Mechanical Joints C. Šrajbr, A. Dillenz Automotive Circle International 2012
Tip Leakage Vortex Cavitation from the Tip Clearance of a Single Hydrofoil
CAV2001: session A6. 006 1 Tip Leakage Vortex Cavitation from the Tip Clearance of a Single Hydrofoil Seiji HIGASHI, Yoshiki YOSHIDA*, and Yoshinobu TSUJIMOTO Osaka University, Graduate School of Engineering
BMBF Forsys Partner Project: A Systems Biology Approach towards Predictive Cancer Therapy
ling and ling and BMBF Forsys Partner Project: A Systems Biology Approach towards Predictive Cancer Therapy H. Perfahl, A. Lapin, M. Reuss Germany holger.perfahl@ibvt.uni-stuttgart.de 1 ling and Cooperation
Numerical analysis of blood flow in human abdominal aorta
Advances in Fluid Mechanics VI 603 Numerical analysis of blood flow in human abdominal aorta M. Podyma 1, I. Zbicinski 1, J. Walecki 2, M. L. Nowicki 2, P. Andziak 3, P. Makowski 4 & L. Stefanczyk 5 1
Analysis of the effects of plaque deposits on the blood flow through human artery
ISSN 2395-1621 Analysis of the effects of plaque deposits on the blood flow through human artery #1 Sajid S. Mulani, #2 Pankaj I. Jagad 1 sajidsmulani21@gmail.com 2 pjjagad.scoe@sinhgad.edu #12 Department
ULTRASOUND QA SOLUTIONS. Ensure Accurate Screening, Diagnosis & Monitoring DOPPLER FLOW PHANTOMS MULTI-PURPOSE PHANTOMS TRANSDUCER TEST PHANTOMS
ULTRASOUND QA SOLUTIONS Ensure Accurate Screening, Diagnosis & Monitoring DOPPLER FLOW PHANTOMS MULTI-PURPOSE PHANTOMS TRANSDUCER TEST PHANTOMS INNOVATORS IN ADVANCED ULTRASOUND TECHNIQUES Gammex is the
Numerical Modelling of Ultrasonic Phased Array Transducers and Their Application
ECNDT 2006 - Mo.2.7.5 Numerical Modelling of Ultrasonic Phased Array Transducers and Their Application Prashanth Kumar CHINTA, René MARKLEIN, University of Kassel, Department of Electrical Engineering
Study of a Pressurized Metered-dose Inhaler Spray Parameters in Fluent
, June 30 - July 2, 2010, London, U.K. Study of a Pressurized Metered-dose Inhaler Spray Parameters in Fluent Ricardo F. Oliveira, Senhorinha Teixeira, Luís F. Silva, José Carlos Teixeira and Henedina
Topic 4. Pitch & Frequency. (Some slides are adapted from Zhiyao Duan s course slides on Computer Audition and Its Applications in Music)
Topic 4 Pitch & Frequency (Some slides are adapted from Zhiyao Duan s course slides on Computer Audition and Its Applications in Music) A musical interlude KOMBU This solo by Kaigal-ool of Huun-Huur-Tu
Conferencia Inaugural
Conferencia Inaugural UNDERSTANDING GASTRIC DIGESTION TO DEVELOP NEW FOODS FOR HEALTH R. Paul Singh Distinguished Professor of Food Engineering Department of Biological and Agricultural Engineering University
Overview of the Acoustic Testing of the European Service Module Structural Test Article (E-STA)
https://ntrs.nasa.gov/search.jsp?r=20170007285 2017-08-12T04:59:10+00:00Z Overview of the Acoustic Testing of the European Service Module Structural Test Article (E-STA) William Hughes, NASA Glenn Research
ULTRASOUND QA SOLUTIONS. Ensure Accurate Screening, Diagnosis & Monitoring DOPPLER FLOW PHANTOMS MULTI-PURPOSE PHANTOMS TRANSDUCER TEST PHANTOMS
ULTRASOUND QA SOLUTIONS Ensure Accurate Screening, Diagnosis & Monitoring DOPPLER FLOW PHANTOMS MULTI-PURPOSE PHANTOMS TRANSDUCER TEST PHANTOMS INNOVATORS IN ADVANCED ULTRASOUND TECHNIQUES Gammex is the
Non-Newtonian pulsatile blood flow in a modeled artery with a stenosis and an aneurysm
Non-Newtonian pulsatile blood flow in a modeled artery with a stenosis and an aneurysm I. Husain, C. Langdon and J. Schwark Department of Mathematics Luther College University of Regina Regina, Saskatchewan
Investigation of Geometric Effect on the Ultrasonic Processing of Liquids
Clemson University TigerPrints All Theses Theses 5-2016 Investigation of Geometric Effect on the Ultrasonic Processing of Liquids Pravan Pasumarthi Clemson University, ppasuma@clemson.edu Follow this and
Noise-Robust Speech Recognition Technologies in Mobile Environments
Noise-Robust Speech Recognition echnologies in Mobile Environments Mobile environments are highly influenced by ambient noise, which may cause a significant deterioration of speech recognition performance.
Monitoring and optimising waste heat recovery for diesel-electric vessel propulsion. Eric Link LMS Imagine.Lab Amesim
Monitoring and optimising waste heat recovery for diesel-electric vessel propulsion Eric Link LMS Imagine.Lab Amesim Realize innovation. Table of content 1. Industry Challenges 2. WHR Potential 3. WHR
The Effect of Vascularization and Tissue Type on Cryosurgical Procedures. Reed Magleby Amanda Schallop Eric Shulman Joshua Sterling
The Effect of Vascularization and Tissue Type on Cryosurgical Procedures Reed Magleby Amanda Schallop Eric Shulman Joshua Sterling BEE 453: Computer-Aided Engineering: Applications to Biomedical Processes
Hybrid Propagation Method Based on Gaussian Beam Summation (GBS)
Hybrid Propagation Method Based on Gaussian Beam Summation (GBS) Asaf Harel, Ehud Heyman June 19, 2014 UWA Symposium June 19, 2014 UWA Symposium 11/ Asaf Harel, Ehud Heyman GBSBased Hybrid Propagation
Closed-loop CFD Model of the Self-Powered Fontan Circulation for the Hypoplastic Left Heart Syndrome
McNair Scholars Research Journal Volume 3 Article 4 016 Closed-loop CFD Model of the Self-Powered Fontan Circulation for the Hypoplastic Left Heart Syndrome Nathalie E. Quintero Embry-Riddle Aeronautical
Numerical Simulation of Blood Flow through Asymmetric and Symmetric Occlusion in Carotid Artery
Proceedings of the 3 rd International Conference on Fluid Flow, Heat and Mass Transfer (FFHMT 16) Ottawa, Canada May 2 3, 2016 Paper No. 170 Numerical Simulation of Blood Flow through Asymmetric and Symmetric
Flow Evaluation and Hemolysis Analysis of BVAD Centrifugal Blood Pump by Computational Fluids Dynamics
International Journal of Fluid Machinery and Systems DOI: http://dx.doi.org/10.5293/ijfms.2014.7.1.034 Vol. 7, No. 1, January-March 2014 ISSN (Online): 1882-9554 Original Paper (Invited) Flow Evaluation
THE DEVELOPMENT AND MANUFACTURE OF FIXED- ULTRASONIC INSPECTION REFERENCE REFLECTORS AND TRANSDUCERS FOR COMPRESSOR BLADE DOVETAILS
International Workshop SMART MATERIALS, STRUCTURES & NDT in AEROSPACE Conference NDT in Canada 2011 2-4 November 2011, Montreal, Quebec, Canada THE DEVELOPMENT AND MANUFACTURE OF FIXED- ULTRASONIC INSPECTION
warwick.ac.uk/lib-publications
Original citation: Feeney, Andrew, Kang, Lei and Dixon, Steve M. (2018) High frequency measurement of ultrasound using flexural ultrasonic transducers. IEEE Sensors Journal, 18 (13). 5238-5244. doi:10.1109/jsen.2018.2835146
Heat Drain Device for Ultrasound Imaging Probes ESAOTE SPA
Heat Drain Device for Ultrasound Imaging Probes ESAOTE SPA L. Spicci, G. Vigna TRANSDUCER STRUCTURE OVERVIEW Finished probe Complete transducer Silicon lens Filling resin INTRODUCTION Electrical driving
Supporting Information
Supporting Information An efficient broadband and omnidirectional light-harvesting scheme employing the hierarchical structure based on ZnO nanorod/si 3 N 4 -coated Si microgroove on 5-inch single crystalline
Improving the diagnostic power of otoacoustic emissions. Arturo Moleti Physics Department University of Roma Tor Vergata
Improving the diagnostic power of otoacoustic emissions Arturo Moleti Physics Department University of Roma Tor Vergata The human ear Ear canal: resonant cavity Middle ear: impedance adapter and pressure
Discrete Signal Processing
1 Discrete Signal Processing C.M. Liu Perceptual Lab, College of Computer Science National Chiao-Tung University http://www.cs.nctu.edu.tw/~cmliu/courses/dsp/ ( Office: EC538 (03)5731877 cmliu@cs.nctu.edu.tw
Achievements and challenges in cavitation research on ship propellers
International Shipbuilding Progress, Vol. 54, Number 2-3, 2007 Achievements and challenges in cavitation research on ship propellers Tom van Terwisga, Erik van Wijngaarden, Johan Bosschers and Gert Kuiper
Numerical simulations of fluid mechanical interactions between two abdominal aortic branches
Korea-Australia Rheology Journal Vol. 16, No. 2, June 2004 pp. 75-83 Numerical simulations of fluid mechanical interactions between two abdominal aortic branches Taedong Kim, Taewon Seo* 1,2 and Abdul.I.
Developments in Ultrasonic Inspection II
Developments in Ultrasonic Inspection II An Ultrasonic Technique for the Testing of Plates Embedded in Concrete with Synthesis of Signals from a Multi-element Probe H. Ishida, Y. Kurozumi, Institute of
CAVITATION RESEARCH ON SHIP PROPELLERS
Sixth International Symposium on Cavitation CAV2006, Wageningen, The Netherlands, September 2006 CAVITATION RESEARCH ON SHIP PROPELLERS A REVIEW OF ACHIEVEMENTS AND CHALLENGES Tom J.C. van Terwisga, MARIN/Delft
Principles of Ultrasound. Cara C. Prideaux, M.D. University of Utah PM&R Sports Medicine Fellow March 14, 2012
Principles of Ultrasound Cara C. Prideaux, M.D. University of Utah PM&R Sports Medicine Fellow March 14, 2012 None Disclosures Outline Introduction Benefits and Limitations of US Ultrasound (US) Physics
How high-frequency do children hear?
How high-frequency do children hear? Mari UEDA 1 ; Kaoru ASHIHARA 2 ; Hironobu TAKAHASHI 2 1 Kyushu University, Japan 2 National Institute of Advanced Industrial Science and Technology, Japan ABSTRACT
Non-invasive sun protection factor determination using LED light
Non-invasive sun protection factor determination using LED light J. Lademann, S. Schanzer, S. Kobylinski, C. Reble, G. Khazaka, G. Wiora, H. Karrer, M. C. Meinke Outline 1. Introduction UV light and its
A Novel Application of Wavelets to Real-Time Detection of R-waves
A Novel Application of Wavelets to Real-Time Detection of R-waves Katherine M. Davis,* Richard Ulrich and Antonio Sastre I Introduction In recent years, medical, industrial and military institutions have
VISUALIZATION OF TRANSDUCER-PRODUCED SOUND FIELDS IN SOLIDS
VISUALIZATION OF TRANSDUCER-PRODUCED SOUND FIELDS IN SOLIDS Wolfgang Sachse* Department of Theoretical and Applied Mechanics Cornell University, Ithaca, New York - 14853 ABSTRACT Broadband ultrasonic pulses
Ultrasound in Medicine
Ultrasound in Medicine Experimental Equipment for Medical Education Universities Colleges Medical Schools Medical and Med-Technical Training Education can befun! WELCOME TO GAMPT Devices and accessories
Effect on car interior sound quality according to the variation of noisy components of tire-pattern noise
Effect on car interior sound quality according to the variation of noisy components of tire-pattern noise Sung-Hwan SHIN 1 ; Takeo HASHIMOTO 2 ; Shigeko HATANO 3 1 Kookmin University, Korea 2,3 Seikei
THz Medical Research [1] NEAR-Lab Northwest Electromagnetics & Acoustics Research. NEAR-Lab - 1 yymmdd, name
![THz Medical Research [1] NEAR-Lab Northwest Electromagnetics & Acoustics Research. NEAR-Lab - 1 yymmdd, name](/thumbs/85/92124044.jpg "THz Medical Research [1] NEAR-Lab Northwest Electromagnetics & Acoustics Research. NEAR-Lab - 1 yymmdd, name")
THz Medical Research [1] Recent advances in laser technology have made THz frequencies accessible for science and engineering. These frequencies are non-ionizing and safe for biomedical research and human
Helicopter Non-Unique Trim Strategies for Blade-Vortex Interaction (BVI) Noise Reduction
Helicopter Non-Uniue Trim Strategies for Blade-Vortex Interaction (BVI) Noise Reduction Carlos Malpica Aerospace Engineer NASA Ames Research Center Moffett Field, CA Eric Greenwood Aerospace Engineer NASA
ULTRASOUND QA SOLUTIONS. Ensure Accurate Screening, Diagnosis and Monitoring DOPPLER FLOW PHANTOMS MULTI-PURPOSE PHANTOMS TRAINING PHANTOMS
ULTRASOUND QA SOLUTIONS Ensure Accurate Screening, Diagnosis and Monitoring DOPPLER FLOW PHANTOMS MULTI-PURPOSE PHANTOMS TRAINING PHANTOMS INNOVATORS IN ADVANCED ULTRASOUND TECHNIQUES Gammex is the only
Turbine 2.05 MW. enovation for efficiency.
Turbine 2.05 MW enovation for efficiency www.eno-energy.com eno 82 enovation for efficiency Leading Edge Reliable yields even at highest requirements are ensured by the eno 82 due to its highly innovative
Computational Fluid Dynamics Analysis of Blalock-Taussig Shunt
Washington University in St. Louis Washington University Open Scholarship Mechanical Engineering and Materials Science Independent Study Mechanical Engineering & Materials Science 12-23-2017 Computational
Overview. Acoustics of Speech and Hearing. Source-Filter Model. Source-Filter Model. Turbulence Take 2. Turbulence
Overview Acoustics of Speech and Hearing Lecture 2-4 Fricatives Source-filter model reminder Sources of turbulence Shaping of source spectrum by vocal tract Acoustic-phonetic characteristics of English
TRANSDUCER MODELS FOR THE FINITE ELEMENT SIMULATION OF ULTRASONIC NDT PHENOMENA. R. L. Ludwig, D. Moore and W. Lord
TRANSDUCER MODELS FOR THE FINITE ELEMENT SIMULATION OF ULTRASONIC NDT PHENOMENA R. L. Ludwig, D. Moore and W. Lord Electrical Engineering Department Colorado State University Fort Collins, Colorado 80523
Modulation and Top-Down Processing in Audition
Modulation and Top-Down Processing in Audition Malcolm Slaney 1,2 and Greg Sell 2 1 Yahoo! Research 2 Stanford CCRMA Outline The Non-Linear Cochlea Correlogram Pitch Modulation and Demodulation Information
Defining, achieving, and demonstrating effective performance of containment systems. Gordon Farquharson, July 2017
Defining, achieving, and demonstrating effective performance of containment systems Gordon Farquharson, July 2017 Slide 1 PharmOut 2017 Agenda Objectives and Principles. A hierarchy of containment techniques.
OPTIMISING ANALYTICAL STRATEGIES FOR THE DEMONSTRATION OF BIOEQUIVALENCE IN A GENERIC NEBULISER
OPTIMISING ANALYTICAL STRATEGIES FOR THE DEMONSTRATION OF BIOEQUIVALENCE IN A GENERIC NEBULISER US FDA guidance for the in vitro demonstration of bioequivalence in a generic nebuliser directly references
Computational Fluid Dynamics Modeling of Amsino OneMask Oxygen Mask
Computational Fluid Dynamics Modeling of Amsino OneMask Oxygen Mask Abstract This study s objective was to model the Amsino OneMask Oxygen Mask using Computational Fluid Dynamics (CFD). A three-dimensional