Gas transport in corrugated pipes often exhibit whistling behavior, due to periodic flow-induced pulsations generated in the pipe cavities. These aero-acoustic sources are strongly dependent on the geometrical dimensions and features of the cavities. As a result, uncertainties in the exact shape and geometry play a significant role in determining the singing behavior of corrugated pipes. While predictive modelling for idealized periodic structures is well established, this paper focusses on the sensitivity analysis and uncertainty quantification (UQ) of uncertain geometrical parameters using probabilistic models. The two most influential geometrical parameters varied within this study are the cavity width and downstream edge radius. Computational Fluid Dynamics (CFD) analysis was used to characterize the acoustic source. Stochastic collocation method was used for propagation of input parameter uncertainties. The analysis was performed with both full tensor product grid and sparse grid based on level-2 Clenshaw-Curtis points. The results show that uncertainties in the width and downstream edge radius of the cavity have an effect on the acoustic source power, peak Strouhal number and consequently the whistling onset velocity. Based on the assumed input parameters distribution functions, the confidence levels for the prediction of onset velocity were calculated. Finally, the results show the importance of performing uncertainty analysis to get more insights in the source of errors and consequently leading to a more robust design or risk-management oriented decision.
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ASME 2015 Pressure Vessels and Piping Conference
July 19–23, 2015
Boston, Massachusetts, USA
Conference Sponsors:
- Pressure Vessels and Piping Division
ISBN:
978-0-7918-5697-0
PROCEEDINGS PAPER
Uncertainty Quantification of Aeroacoustic Power Sources in Corrugated Pipes Available to Purchase
Maharudrayya Swamy,
Maharudrayya Swamy
TNO, Delft, The Netherlands
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Pejman Shoeibi Omrani,
Pejman Shoeibi Omrani
TNO, Delft, The Netherlands
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Nestor Gonzalez Diez
Nestor Gonzalez Diez
TNO, Delft, The Netherlands
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Maharudrayya Swamy
TNO, Delft, The Netherlands
Pejman Shoeibi Omrani
TNO, Delft, The Netherlands
Nestor Gonzalez Diez
TNO, Delft, The Netherlands
Paper No:
PVP2015-45507, V004T04A038; 8 pages
Published Online:
November 19, 2015
Citation
Swamy, M, Omrani, PS, & Diez, NG. "Uncertainty Quantification of Aeroacoustic Power Sources in Corrugated Pipes." Proceedings of the ASME 2015 Pressure Vessels and Piping Conference. Volume 4: Fluid-Structure Interaction. Boston, Massachusetts, USA. July 19–23, 2015. V004T04A038. ASME. https://doi.org/10.1115/PVP2015-45507
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