Volume 10, Issue 1
Flow-Induced Acoustics in Corrugated Pipes

Mihaela Popescu, Stein Tore Johansen & Wei Shyy

Commun. Comput. Phys., 10 (2011), pp. 120-139.

Published online: 2011-10

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  • Abstract

When gas flows through corrugated pipes, pressure waves interacting with vortex shedding can produce distinct tonal noise and structural vibration. Based on established observations, a model is proposed which couples an acoustic pipe and self-excited oscillations with vortex shedding over the corrugation cavities. In the model, the acoustic response of the corrugated pipe is simulated by connecting the lossless medium moving with a constant velocity with a source based on a discrete distribution of van der Pol oscillators arranged along the pipe. Our time accurate solutions exhibit dynamic behavior consistent with that experimentally observed, including the lock-in frequency of vortex shedding, standing waves and the onset fluid velocity capable of generating the lock-in.

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@Article{CiCP-10-120, author = {}, title = {Flow-Induced Acoustics in Corrugated Pipes}, journal = {Communications in Computational Physics}, year = {2011}, volume = {10}, number = {1}, pages = {120--139}, abstract = {

When gas flows through corrugated pipes, pressure waves interacting with vortex shedding can produce distinct tonal noise and structural vibration. Based on established observations, a model is proposed which couples an acoustic pipe and self-excited oscillations with vortex shedding over the corrugation cavities. In the model, the acoustic response of the corrugated pipe is simulated by connecting the lossless medium moving with a constant velocity with a source based on a discrete distribution of van der Pol oscillators arranged along the pipe. Our time accurate solutions exhibit dynamic behavior consistent with that experimentally observed, including the lock-in frequency of vortex shedding, standing waves and the onset fluid velocity capable of generating the lock-in.

}, issn = {1991-7120}, doi = {https://doi.org/10.4208/cicp.301209.230710a}, url = {http://global-sci.org/intro/article_detail/cicp/7437.html} }
TY - JOUR T1 - Flow-Induced Acoustics in Corrugated Pipes JO - Communications in Computational Physics VL - 1 SP - 120 EP - 139 PY - 2011 DA - 2011/10 SN - 10 DO - http://doi.org/10.4208/cicp.301209.230710a UR - https://global-sci.org/intro/article_detail/cicp/7437.html KW - AB -

When gas flows through corrugated pipes, pressure waves interacting with vortex shedding can produce distinct tonal noise and structural vibration. Based on established observations, a model is proposed which couples an acoustic pipe and self-excited oscillations with vortex shedding over the corrugation cavities. In the model, the acoustic response of the corrugated pipe is simulated by connecting the lossless medium moving with a constant velocity with a source based on a discrete distribution of van der Pol oscillators arranged along the pipe. Our time accurate solutions exhibit dynamic behavior consistent with that experimentally observed, including the lock-in frequency of vortex shedding, standing waves and the onset fluid velocity capable of generating the lock-in.

Mihaela Popescu, Stein Tore Johansen & Wei Shyy. (2020). Flow-Induced Acoustics in Corrugated Pipes. Communications in Computational Physics. 10 (1). 120-139. doi:10.4208/cicp.301209.230710a
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