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Transmission loss analysis of thick perforated plates for valve contained pipelines

Qian, Jin Yuan LU ; Wei, Lin; Zhu, Guo Rong; Chen, Fu Qiang and Jin, Zhi Jiang (2016) In Energy Conversion and Management 109. p.86-93
Abstract

Valve contained pipelines have witnessed a great growth and there exists a lot of noise caused by valves. Thick perforated plates are especially used is valve contained pipelines for the noise control, but there are limited literatures about its noise control performances under different structural parameter of thick perforated plates, which limits its popularization and application. In this paper, transmission loss (TL) predictions of various thick perforated plates are carried out to analyze the noise control performances. Finite element method (FEM) is implemented to simulate the acoustic response, and TL is achieved by the sound pressure of four points on both sides of the thick perforated plates. Adopted numerical method shows good... (More)

Valve contained pipelines have witnessed a great growth and there exists a lot of noise caused by valves. Thick perforated plates are especially used is valve contained pipelines for the noise control, but there are limited literatures about its noise control performances under different structural parameter of thick perforated plates, which limits its popularization and application. In this paper, transmission loss (TL) predictions of various thick perforated plates are carried out to analyze the noise control performances. Finite element method (FEM) is implemented to simulate the acoustic response, and TL is achieved by the sound pressure of four points on both sides of the thick perforated plates. Adopted numerical method shows good agreements with the existing research works and the results indicate that reducing the margin of the plates can enhance TL of some frequencies. Similar to chamber mufflers, the maximum TL depends on the area ratio and the frequency range with the best noise control performance is related to the plate thickness. Meanwhile, the low velocity flow does not affect the TL curve so much and in the situation of supersonic flow, and the TL curve turns into a periodic shape, which may weaken the effects of noise control. Besides, based on the analytical solution of TL for the chamber muffler, a linear correction formula of maximum TL is proposed for the thick perforated plate. This work can give several advices for similar perforated plates design works and someone who are dealing with decreasing the noise effects from the valves in pipelines.

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author
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Finite element method (FEM), Noise control, Thick perforated plates, Transmission loss (TL), Valve contained pipelines
in
Energy Conversion and Management
volume
109
pages
8 pages
publisher
Elsevier
external identifiers
  • scopus:84949604144
ISSN
0196-8904
DOI
10.1016/j.enconman.2015.11.058
language
English
LU publication?
no
id
79fafced-a4eb-4b76-a172-100632b86323
date added to LUP
2016-11-11 17:08:06
date last changed
2017-11-19 04:34:44
@article{79fafced-a4eb-4b76-a172-100632b86323,
  abstract     = {<p>Valve contained pipelines have witnessed a great growth and there exists a lot of noise caused by valves. Thick perforated plates are especially used is valve contained pipelines for the noise control, but there are limited literatures about its noise control performances under different structural parameter of thick perforated plates, which limits its popularization and application. In this paper, transmission loss (TL) predictions of various thick perforated plates are carried out to analyze the noise control performances. Finite element method (FEM) is implemented to simulate the acoustic response, and TL is achieved by the sound pressure of four points on both sides of the thick perforated plates. Adopted numerical method shows good agreements with the existing research works and the results indicate that reducing the margin of the plates can enhance TL of some frequencies. Similar to chamber mufflers, the maximum TL depends on the area ratio and the frequency range with the best noise control performance is related to the plate thickness. Meanwhile, the low velocity flow does not affect the TL curve so much and in the situation of supersonic flow, and the TL curve turns into a periodic shape, which may weaken the effects of noise control. Besides, based on the analytical solution of TL for the chamber muffler, a linear correction formula of maximum TL is proposed for the thick perforated plate. This work can give several advices for similar perforated plates design works and someone who are dealing with decreasing the noise effects from the valves in pipelines.</p>},
  author       = {Qian, Jin Yuan and Wei, Lin and Zhu, Guo Rong and Chen, Fu Qiang and Jin, Zhi Jiang},
  issn         = {0196-8904},
  keyword      = {Finite element method (FEM),Noise control,Thick perforated plates,Transmission loss (TL),Valve contained pipelines},
  language     = {eng},
  month        = {02},
  pages        = {86--93},
  publisher    = {Elsevier},
  series       = {Energy Conversion and Management},
  title        = {Transmission loss analysis of thick perforated plates for valve contained pipelines},
  url          = {http://dx.doi.org/10.1016/j.enconman.2015.11.058},
  volume       = {109},
  year         = {2016},
}