TY - GEN
T1 - Predicting insertion loss of large duct systems utilizing the diffuse reciprocity relationship
AU - Herrin, D. W.
AU - Cui, Z.
AU - Liu, J.
PY - 2008
Y1 - 2008
N2 - Plane wave propagation can be assumed in many duct and exhaust systems because the dimensions of the silencer and muffler components are small compared to an acoustic wavelength. However, the plane wave assumption is not appropriate for larger duct or exhaust systems. Examples include HVAC duct systems, and large diesel engine mufflers commonly used in ship and generator sets. In this paper, the finite element method is utilized to simulate large duct systems and then to predict the insertion loss. The boundary condition at the source is a diffuse field applied using the diffuse reciprocity relationship developed by Shorter and Langley. Simulation results are compared to published measurement results for HVAC plena and show excellent agreement.
AB - Plane wave propagation can be assumed in many duct and exhaust systems because the dimensions of the silencer and muffler components are small compared to an acoustic wavelength. However, the plane wave assumption is not appropriate for larger duct or exhaust systems. Examples include HVAC duct systems, and large diesel engine mufflers commonly used in ship and generator sets. In this paper, the finite element method is utilized to simulate large duct systems and then to predict the insertion loss. The boundary condition at the source is a diffuse field applied using the diffuse reciprocity relationship developed by Shorter and Langley. Simulation results are compared to published measurement results for HVAC plena and show excellent agreement.
UR - https://www.scopus.com/pages/publications/84870021361
UR - https://www.scopus.com/pages/publications/84870021361#tab=citedBy
M3 - Conference contribution
AN - SCOPUS:84870021361
SN - 9781605605401
T3 - Institute of Noise Control Engineering of the USA - 23rd National Conference on Noise Control Engineering, NOISE-CON 08 and Sound Quality Symposium, SQS 08
SP - 627
EP - 632
BT - Institute of Noise Control Engineering of the USA - 23rd National Conference on Noise Control Engineering, NOISE-CON 08 and Sound Quality Symposium, SQS 08
T2 - 23rd National Conference on Noise Control Engineering, NOISE-CON 2008 and 3rd Sound Quality Symposium, SQS 2008
Y2 - 28 July 2008 through 31 July 2008
ER -