Topics: Cavities , Flow (Dynamics) , Resonance , Pressure , Convection , Energy generation , Aerospace industry , Excitation , Fluctuations (Physics) , Noise (Sound)

Water Tunnel Acoustic Measurements Using a Time Reversal Mirror

Christopher Barber, Gerald C. Lauchle, Dean E. Capone

IMECE 2001; 23-29https://doi.org/10.1115/IMECE2001/NCA-23502

Abstract

View Articletitled, Water Tunnel Acoustic Measurements Using a Time Reversal Mirror

PDF

Topics: Acoustics , Mirrors , Time reversal , Water tunnels , Data acquisition , Instrumentation , Signals , Testing , Water

High Temperature Supersonic Jet Facility for Aeroacoustic Studies

Brenton J. Greska, Anjaneyulu Krothapalli

IMECE 2001; 31-36https://doi.org/10.1115/IMECE2001/NCA-23503

Abstract

View Articletitled, High Temperature Supersonic Jet Facility for Aeroacoustic Studies

PDF

Topics: High temperature , Flow (Dynamics) , Pressure , Data acquisition , Displacement , Fluctuations (Physics) , Fuels , Heat , High pressure (Physics) , Instrumentation

ARL/PENN State Pump Test Loop

Stephen A. Hambric, Adam M. Yocum, Thomas Cawley, Steven M. Willits

IMECE 2001; 37-47https://doi.org/10.1115/IMECE2001/NCA-23504

Abstract

View Articletitled, ARL/PENN State Pump Test Loop

PDF

Topics: Pumps , Turbulence , Noise (Sound) , Spacetime , Test facilities , Compressors , Contamination , Fluids , Inflow , Laser Doppler anemometry

Lifting Surface Flow, Pressure, and Vibration at High Reynolds-Number

Dwayne A. Bourgoyne, Carolyn Q. Judge, Josh Hamel, Steven L. Ceccio, David R. Dowling

IMECE 2001; 49-59https://doi.org/10.1115/IMECE2001/NCA-23505

Abstract

View Articletitled, Lifting Surface Flow, Pressure, and Vibration at High Reynolds-Number

PDF

Topics: Flow (Dynamics) , Pressure , Reynolds number , Vibration , Chords (Trusses) , Hydrofoil , Turbulence , Cavitation

Array-Based Methods of Characterizing Piping Component Acoustic Behavior

Matthew Conti, Ann Stokes, Charles Corrado

IMECE 2001; 61-70https://doi.org/10.1115/IMECE2001/NCA-23506

Abstract

View Articletitled, Array-Based Methods of Characterizing Piping Component Acoustic Behavior

PDF

Topics: Acoustics , Pipes , S-matrix theory , Waves , Algorithms , Electromagnetic scattering , Energy conversion , Experimental design , Experimental methods , Piping systems

A Transmission Line Approach to the Acoustic Analysis of Piping Systems

Ann Stokes, Matt Conti, Charles Corrado, Sevag Arzoumanian

IMECE 2001; 71-87https://doi.org/10.1115/IMECE2001/NCA-23507

Abstract

View Articletitled, A Transmission Line Approach to the Acoustic Analysis of Piping Systems

PDF

Topics: Acoustics , Piping systems , Transmission lines , Fluids , Waves , Electromagnetic scattering , Pipes , Radiation scattering , Scattering (Physics) , Algorithms

Sound Radiation From a Flow-Excited Rectangular Plate With Visco-Elastic Supports

Junhong Park, Thomas Siegmund, Luc Mongeau

IMECE 2001; 89-102https://doi.org/10.1115/IMECE2001/NCA-23508

Abstract

View Articletitled, Sound Radiation From a Flow-Excited Rectangular Plate With Visco-Elastic Supports

PDF

Topics: Flow (Dynamics) , Sound , Glass , Vibration , Noise (Sound) , Resonance , Turbulence , Aluminum , Condensers (steam plant) , Damping

Advanced Techniques for Structural Acoustics

Efficient Component-Based Vibration and Power Flow Analysis of a Vehicle Structure

Yung-Chang Tan, Soo-Yeol Lee, Matthew P. Castanier, Christophe Pierre

IMECE 2001; 103-112https://doi.org/10.1115/IMECE2001/NCA-23509

Abstract

View Articletitled, Efficient Component-Based Vibration and Power Flow Analysis of a Vehicle Structure

PDF

Topics: Flow (Dynamics) , Vehicles , Vibration , Finite element model , Design , Automotive design , Modeling

Damping Loss Factor Estimation for Test-Based Vehicle SEA Modeling

Jae-Hak Woo, Xiandi Zeng

IMECE 2001; 113-116https://doi.org/10.1115/IMECE2001/NCA-23510

Abstract

View Articletitled, Damping Loss Factor Estimation for Test-Based Vehicle SEA Modeling

PDF

Topics: Damping , Modeling , Seas , Vehicles , Cavities , Errors , Sound reverberation

A Sequential Adjoint Variable Method in Design Sensitivity Analysis of NVH Problems

N. H. Kim, K. K. Choi, J. Dong, C. Pierre, N. Vlahopoulos, Z. D. Ma, M. Castanier

IMECE 2001; 117-126https://doi.org/10.1115/IMECE2001/NCA-23511

Abstract

View Articletitled, A Sequential Adjoint Variable Method in Design Sensitivity Analysis of NVH Problems

PDF

Topics: Boundary element methods , Design sensitivity analysis

Identification of Incoherent Noise Sources

S. T. Raveendra, S. Sureshkumar

IMECE 2001; 127-133https://doi.org/10.1115/IMECE2001/NCA-23512

Abstract

View Articletitled, Identification of Incoherent Noise Sources

PDF

Topics: Noise (Sound) , Acoustics , Boundary element methods , Generators , Geometry , Holography , Signals , Sound pressure

A Computational Process for Pass-by Noise Simulation

Zhidong Zhang, Nickolas Vlahopoulos, T. Allen, K. Y. Zhang

IMECE 2001; 135-142https://doi.org/10.1115/IMECE2001/NCA-23513

Abstract

View Articletitled, A Computational Process for Pass-by Noise Simulation

PDF

Topics: Noise (Sound) , Simulation , Acoustics , Boundary element methods , Vehicles , Algorithms , Computer simulation , Engines , Intake manifolds , Sound pressure

Numerical Probabilistic Analysis of Structural/Acoustic Systems

Michael Allen, Nickolas Vlahopoulos

IMECE 2001; 143-151https://doi.org/10.1115/IMECE2001/NCA-23514

Abstract

View Articletitled, Numerical Probabilistic Analysis of Structural/Acoustic Systems

PDF

Topics: Acoustics , Finite element analysis , Manufacturing , Probability , Simulation , Boundary element methods , Computation , Density , Uncertainty

Resound: A Full Spectrum Modelling Method

P. J. Shorter, B. K. Gardner, A. Patil

IMECE 2001; 153-160https://doi.org/10.1115/IMECE2001/NCA-23515

Abstract

View Articletitled, Resound: A Full Spectrum Modelling Method

PDF

Topics: Modeling , Wavelength , Acoustics , Seas

Computation of Sound Transmission Loss and Absorption Coefficient of Multi-Layer Systems

K. L. Hong, S. T. Raveendra

IMECE 2001; 161-169https://doi.org/10.1115/IMECE2001/NCA-23516

Abstract

View Articletitled, Computation of Sound Transmission Loss and Absorption Coefficient of Multi-Layer Systems

PDF

Topics: Absorption , Computation , Sound , Absorbents , Poles (Building) , Acoustics , Pressure , Structural panels

Acoustic Engines

Introduction to Thermoacoustic Engines and Refrigerators

Matthew E. Poese, Steven L. Garrett

IMECE 2001; 171-176https://doi.org/10.1115/IMECE2001/NCA-23517

Abstract

View Articletitled, Introduction to Thermoacoustic Engines and Refrigerators

PDF

Topics: Thermoacoustic devices , Combustion , Electronics , Heat , Natural gas , Navy , Radar , Refrigeration , Space vehicles , Teams

Variable Gap-Reluctance Linear Motor With Application to Linear Resonance Compressors

Vernon W. Popham, Christopher C. Lawrenson, Ronald F. Burr, Bart Lipkens

IMECE 2001; 177-186https://doi.org/10.1115/IMECE2001/NCA-23518

Abstract

View Articletitled, Variable Gap-Reluctance Linear Motor With Application to Linear Resonance Compressors

PDF

Topics: Compressors , Diaphragms (Mechanical devices) , Diaphragms (Structural) , Linear motors , Resonance

Recent Developments in Thermoacoustic Engine-Generators

John A. Corey

IMECE 2001; 187-193https://doi.org/10.1115/IMECE2001/NCA-23519

Abstract

View Articletitled, Recent Developments in Thermoacoustic Engine-Generators

PDF

Topics: Acoustics , Design , Engineering prototypes , Engines , Generators , Machinery , Reliability , Resonance , Testing , Thermoacoustic devices

Experimental Investigations of an Electro-Dynamically Driven Thermoacoustic Cooler

Luc Mongeau, Aaron Alexander, Brian Minner, In-Su Paek, James E. Braun

IMECE 2001; 195-206https://doi.org/10.1115/IMECE2001/NCA-23520

Abstract

View Articletitled, Experimental Investigations of an Electro-Dynamically Driven Thermoacoustic Cooler

PDF

Topics: Acoustics , Boundary layers , Cooling , Cooling systems , Electromechanical actuators , Electromechanical effects , Engineering prototypes , Flow (Dynamics) , Fluids , Heat

Acoustic Diffraction

Simplified Dynamic Models of Submerged Objects From Limited Scattering Data

J. Gregory McDaniel, Cory L. Clarke

IMECE 2001; 207-212https://doi.org/10.1115/IMECE2001/NCA-23521

Abstract

View Articletitled, Simplified Dynamic Models of Submerged Objects From Limited Scattering Data

PDF

Topics: Dynamic models , Electromagnetic scattering , Radiation scattering , Scattering (Physics) , Waves , Acoustics , Reflection

Acoustic Diffraction by a Half-Plane in a Viscous Fluid Medium

Anthony M. J. Davis, Raymond J. Nagem

IMECE 2001; 213-220https://doi.org/10.1115/IMECE2001/NCA-23522

Abstract

View Articletitled, Acoustic Diffraction by a Half-Plane in a Viscous Fluid Medium

PDF

Topics: Acoustics , Diffraction , Fluids , Stress , Waves , Computation , Fluid dynamics

Boundary Layer Analysis of Acoustic Diffraction by a Half-Plane in a Viscous Fluid Medium

Raymond J. Nagem, Guido Sandri

IMECE 2001; 221-228https://doi.org/10.1115/IMECE2001/NCA-23523

Abstract

View Articletitled, Boundary Layer Analysis of Acoustic Diffraction by a Half-Plane in a Viscous Fluid Medium

PDF

Topics: Acoustics , Boundary layers , Diffraction , Fluids , Approximation , Viscosity , Viscous flow , Waves

A Multiple-Frequency Partial-Field Method for Exterior Acoustics Based on Padé via Lanczos Approximants

Marcus M. Wagner, Peter M. Pinsky, Manish Malhotra

IMECE 2001; 229-234https://doi.org/10.1115/IMECE2001/NCA-23524

Abstract

View Articletitled, A Multiple-Frequency Partial-Field Method for Exterior Acoustics Based on Padé via Lanczos Approximants

PDF

Topics: Acoustics , Approximation , Boundary-value problems , Computation , Finite element analysis , Radiation (Physics)

Analysis Techniques in Designing Quiet Structures

Acoustic Control in a 2D Enclosure Using Two Optimally Designed Helmholtz Resonators

Patricia L. Driesch, Gary H. Koopmann

IMECE 2001; 235-241https://doi.org/10.1115/IMECE2001/NCA-23525

Abstract

View Articletitled, Acoustic Control in a 2D Enclosure Using Two Optimally Designed Helmholtz Resonators

PDF

Topics: Acoustics , Design , Design methodology , Eigenvalues , Modeling , Noise (Sound) , Optimization , Potential energy

Tuning a Replica of the Liberty Bell via Material Tailoring: An Application of a Method for Optimal Acoustic Design

G. H. Koopmann, David Ericson, Adam Olchowski, Eric Salesky

IMECE 2001; 243-248https://doi.org/10.1115/IMECE2001/NCA-23526

Abstract

View Articletitled, Tuning a Replica of the Liberty Bell via Material Tailoring: An Application of a Method for Optimal Acoustic Design

PDF

Topics: Acoustics , Design , Computer software , Dynamics (Mechanics) , Eigenfunctions , Eigenvalues , Engineering disciplines , Engines , Matlab , Optimization

Optimum Stiffener Design to Reduce Broadband Vibration and Sound Radiation

Dongjai Lee, Ashok D. Belegundu, Gary H. Koopmann

IMECE 2001; 249-254https://doi.org/10.1115/IMECE2001/NCA-23527

Abstract

View Articletitled, Optimum Stiffener Design to Reduce Broadband Vibration and Sound Radiation

PDF

Topics: Design , Sound , Vibration , Acoustics , Finite element analysis , Optimization , Density , Design methodology , Kinetic energy , Structural dynamics

Design and Optimization of Broadband Vibration Absorbers for Noise Control

Emily S. Heinze, Michael D. Grissom, Ashok Belegundu

IMECE 2001; 255-260https://doi.org/10.1115/IMECE2001/NCA-23528

Abstract

View Articletitled, Design and Optimization of Broadband Vibration Absorbers for Noise Control

PDF

Topics: Design , Noise control , Optimization , Vibration absorbers , Mode shapes , Algorithms , Finite element analysis , Modal analysis , Shapes

Computational Acoustics

High-Order Optimized Numerical Schemes for Computational Aeroacoustics

S. Zheng, M. Zhuang

IMECE 2001; 261-270https://doi.org/10.1115/IMECE2001/NCA-23529

Abstract

View Articletitled, High-Order Optimized Numerical Schemes for Computational Aeroacoustics

PDF

Topics: Aerodynamic noise , Waves , Acoustics , Dispersion relations , Finite difference methods , Fourier analysis , Optimization

Shape Sensitivity Analysis Applied to Exterior Acoustics

Gonzalo R. Feijóo, Assad A. Oberai, Peter M. Pinsky

IMECE 2001; 271-279https://doi.org/10.1115/IMECE2001/NCA-23530

Abstract

View Articletitled, Shape Sensitivity Analysis Applied to Exterior Acoustics

PDF

Topics: Acoustics , Sensitivity analysis , Shapes , Optimization , Structural acoustics

A New Numerical Technique for the Unification of Propagation and Scattering Problems in Underwater Acoustics

Natalia A. Sidorovskaia

IMECE 2001; 281-287https://doi.org/10.1115/IMECE2001/NCA-23531

Abstract

View Articletitled, A New Numerical Technique for the Unification of Propagation and Scattering Problems in Underwater Acoustics

PDF

Topics: Electromagnetic scattering , Radiation scattering , Scattering (Physics) , Simulation , Underwater acoustics

Domain Decomposition Methods With Frequency Band Interpolation for Computational Acoustics

Lonny L. Thompson, Limin Zhang, Robert P. Ingel

IMECE 2001; 289-303https://doi.org/10.1115/IMECE2001/NCA-23532

Abstract

View Articletitled, Domain Decomposition Methods With Frequency Band Interpolation for Computational Acoustics

PDF

Topics: Acoustics , Electromagnetic spectrum , Interpolation , Dispersion relations , Waves

Computation of Noise From Fully-Expanded Supersonic Jet Using Low-Dispersion Methodology

Oktay Baysal, Moumen M. Idres

IMECE 2001; 305-316https://doi.org/10.1115/IMECE2001/NCA-23533

Abstract

View Articletitled, Computation of Noise From Fully-Expanded Supersonic Jet Using Low-Dispersion Methodology

PDF

Topics: Computation , Noise (Sound) , Design , Engineering simulation , Physics , Simulation , Sound pressure

Computation of Time Harmonic Acoustic Waves in a Duct With Nonuniform Mean Flow

Amr A. Ali, Oliver V. Atassi, Hafiz M. Atassi

IMECE 2001; 317-331https://doi.org/10.1115/IMECE2001/NCA-23534

Abstract

View Articletitled, Computation of Time Harmonic Acoustic Waves in a Duct With Nonuniform Mean Flow

PDF

Topics: Acoustics , Computation , Ducts , Flow (Dynamics) , Waves , Boundary-value problems , Swirling flow , Geometry

Reconstruction of Transient Acoustic Radiation From Impulsively Accelerated Objects

Manjit S. Bajwa, Sean F. Wu

IMECE 2001; 333-341https://doi.org/10.1115/IMECE2001/NCA-23535

Abstract

View Articletitled, Reconstruction of Transient Acoustic Radiation From Impulsively Accelerated Objects

PDF

Topics: Acoustics , Radiation (Physics) , Transients (Dynamics) , Sound pressure , Fourier transforms

Wing Geometry Effect on Blade-Vortex Interaction Response Using BEM

Trevor H. Wood, Sheryl M. Grace

IMECE 2001; 343-351https://doi.org/10.1115/IMECE2001/NCA-23536

Abstract

View Articletitled, Wing Geometry Effect on Blade-Vortex Interaction Response Using BEM

PDF

Topics: Blades , Boundary element methods , Geometry , Vortices , Wings

Active/Passive Control

Active Acoustic Control of Conical Bores Through Actuating Boundary Conditions

Kevin M. Farinholt, Donald J. Leo

IMECE 2001; 353-360https://doi.org/10.1115/IMECE2001/NCA-23537

Abstract

View Articletitled, Active Acoustic Control of Conical Bores Through Actuating Boundary Conditions

PDF

Topics: Acoustics , Boundary-value problems , Geometry , Pressure , Dynamics (Mechanics) , Electrical measurement , Engineering simulation , Impulse (Physics) , Mechanical properties , Permanent magnets

Decentralized Control of Structural Acoustic Radiation

Kenneth D. Frampton

IMECE 2001; 361-366https://doi.org/10.1115/IMECE2001/NCA-23538

Abstract

View Articletitled, Decentralized Control of Structural Acoustic Radiation

PDF

Topics: Acoustics , Actuators , Architecture , Control equipment , Control systems , Electricity (Physics) , Microelectromechanical systems , Radiation (Physics) , Sensors , Vibration

Investigation of the Transmission Loss Behavior of an Advanced Grid-Stiffened Structure

Jeffrey S. Vipperman, Deyu Li, Ilya Avdeev

IMECE 2001; 367-374https://doi.org/10.1115/IMECE2001/NCA-23539

Abstract

View Articletitled, Investigation of the Transmission Loss Behavior of an Advanced Grid-Stiffened Structure

PDF

Topics: Acoustics , Composite materials , Finite element analysis , Geometry , Modal analysis , Passive control

BS/MS Student Paper Competition

Visualization of Sound Transmission Into a Vehicle Passenger Compartment

Manmohan S. Moondra, Sean F. Wu

IMECE 2001; 375-383https://doi.org/10.1115/IMECE2001/NCA-23540

Abstract

View Articletitled, Visualization of Sound Transmission Into a Vehicle Passenger Compartment

PDF

Topics: Sound , Vehicles , Visualization , Sound pressure , Boundary element methods , Acoustics , Excitation , Acoustic intensity , Cavities , Engines