Fred Perie - Academia.edu (original) (raw)
Uploads
Papers by Fred Perie
A comprehensive finite element methodology is developed to predict the compressible flow performa... more A comprehensive finite element methodology is developed to predict the compressible flow performance of a non-symmetric 7-blade axial flow fan, and to quantify the source strength and sound pressure levels at any location in the system. The acoustic and flow performances of the fan are predicted simultaneously using a computational aero-acoustic technique combining transient flow analysis and noise propagation. The calculated sound power levels compare favorably with the measured sound power data per AMCA 300-96 code.
SAE Technical Paper Series, 1999
for copying beyond that permitted by Sections 107 or 108 of the U.S. Copyright Law. This consent ... more for copying beyond that permitted by Sections 107 or 108 of the U.S. Copyright Law. This consent does not extend to other kinds of copying such as copying for general distribution, for advertising or promotional purposes, for creating new collective works, or for resale. SAE routinely stocks printed papers for a period of three years following date of publication. Direct your orders to SAE Customer Sales and Satisfaction Department. Quantity reprint rates can be obtained from the Customer Sales and Satisfaction Department. To request permission to reprint a technical paper or permission to use copyrighted SAE publications in other works, contact the SAE Publications Group. No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior written permission of the publisher.
SAE Technical Paper Series, 1997
In the present study, the acoustic performance of an automotive air handling system is analyzed u... more In the present study, the acoustic performance of an automotive air handling system is analyzed using computational aeroacoustics methods. The purpose of this study is to develop a comprehensive method to quantify noise sources and predict sound quantities at any location in the system as well as in the exterior field. Flow of air and vibration of structures are solved simultaneously in the time domain. Results are then postprocessed to derive sound sources. Sound pressure levels at desired locations in the exterior field are then predicted. Predictions were compared with preliminary test data. Also compared is a simulation of the same system using a Helmholtz equation solver, but without taking into account the average fluid flow.
Volume 1: Fora, Parts A, B, C, and D, 2003
The purpose of this paper is to present a Finite Element method able to simulate and predict exha... more The purpose of this paper is to present a Finite Element method able to simulate and predict exhaust radiation noise. The simulation takes into account fluid flow pulsation, aeroacoustic noise sources; flow induced structural vibration as well as noise radiation in the far field. All those phenomena are directly calculated in a fully coupled manner. By applying measured values at the model inflow, accurate radiation noise from the exhaust system is obtained. Locations of noise sources as well as mechanisms of noise generation are clarified. The method enables the investigation of exhaust noise radiation at early development stages. The use of semiconductor pressure sensors with 1-MHz sampling as well as Laser Doppler Velocimetry contributed greatly to the measurement accuracy required for the definition of inflow conditions.Copyright © 2003 by ASME
A comprehensive finite element methodology is developed to predict the compressible flow performa... more A comprehensive finite element methodology is developed to predict the compressible flow performance of a non-symmetric 7-blade axial flow fan, and to quantify the source strength and sound pressure levels at any location in the system. The acoustic and flow performances of the fan are predicted simultaneously using a computational aero-acoustic technique combining transient flow analysis and noise propagation. The calculated sound power levels compare favorably with the measured sound power data per AMCA 300-96 code.
SAE Technical Paper Series, 1999
for copying beyond that permitted by Sections 107 or 108 of the U.S. Copyright Law. This consent ... more for copying beyond that permitted by Sections 107 or 108 of the U.S. Copyright Law. This consent does not extend to other kinds of copying such as copying for general distribution, for advertising or promotional purposes, for creating new collective works, or for resale. SAE routinely stocks printed papers for a period of three years following date of publication. Direct your orders to SAE Customer Sales and Satisfaction Department. Quantity reprint rates can be obtained from the Customer Sales and Satisfaction Department. To request permission to reprint a technical paper or permission to use copyrighted SAE publications in other works, contact the SAE Publications Group. No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior written permission of the publisher.
SAE Technical Paper Series, 1997
In the present study, the acoustic performance of an automotive air handling system is analyzed u... more In the present study, the acoustic performance of an automotive air handling system is analyzed using computational aeroacoustics methods. The purpose of this study is to develop a comprehensive method to quantify noise sources and predict sound quantities at any location in the system as well as in the exterior field. Flow of air and vibration of structures are solved simultaneously in the time domain. Results are then postprocessed to derive sound sources. Sound pressure levels at desired locations in the exterior field are then predicted. Predictions were compared with preliminary test data. Also compared is a simulation of the same system using a Helmholtz equation solver, but without taking into account the average fluid flow.
Volume 1: Fora, Parts A, B, C, and D, 2003
The purpose of this paper is to present a Finite Element method able to simulate and predict exha... more The purpose of this paper is to present a Finite Element method able to simulate and predict exhaust radiation noise. The simulation takes into account fluid flow pulsation, aeroacoustic noise sources; flow induced structural vibration as well as noise radiation in the far field. All those phenomena are directly calculated in a fully coupled manner. By applying measured values at the model inflow, accurate radiation noise from the exhaust system is obtained. Locations of noise sources as well as mechanisms of noise generation are clarified. The method enables the investigation of exhaust noise radiation at early development stages. The use of semiconductor pressure sensors with 1-MHz sampling as well as Laser Doppler Velocimetry contributed greatly to the measurement accuracy required for the definition of inflow conditions.Copyright © 2003 by ASME