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Numerical study on flow-induced noise for a steam stop-valve using large eddy simulation

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Abstract

The noise induced by the fluctuant saturated steam flow under 250 °C in a stop-valve was numerically studied. The simulation was carried out using computational fluid dynamics (CFD) and ACTRAN. The acoustic field was investigated with Lighthill’s acoustic analogy based on the properties of the flow field obtained using a large-eddy simulation that employs the LES-WALE dynamic model as the sub-grid-scale model. Firstly, the validation of mesh was well conducted, illustrating that two million elements were sufficient in this situation. Secondly, the treatment of the steam was deliberated, and conclusions indicate that when predicting the flow-induced noise of the stop-valve, the steam can be treated as incompressible gas at a low inlet velocity. Thirdly, the flow-induced noises under different inlet velocities were compared. The findings reveal it has remarkable influence on the flow-induced noises. Lastly, whether or not the heat preservation of the wall has influence on the noise was taken into account. The results show that heat preservation of the wall had little influence.

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Authors and Affiliations

  1. School of Naval Architecture and Ocean Engineering, Huazhong University of Science & Technology, Wuhan, 430074, China

    Jiming Liu, Tao Zhang & Yong’ou Zhang

Authors
  1. Jiming Liu
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  2. Tao Zhang
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  3. Yong’ou Zhang
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Correspondence to Tao Zhang.

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Tao Zhang is an associate professor of Naval Architecture and Ocean Engineering at Huazhong University of Science & Technology in Wuhan. He mainly researches the mechanics of ship and ocean engineering structure, the noise & vibration control, the finite element analysis, and the optimization of ship and ocean engineering structure. As a project leader, he has completed a number of fund projects, such as “Study on the failure mechanism of plate structures under orientational load”, “Study on the dynamic mechanical behavior of the damaged composite structure under fluid-solid impact”, “Design of a new type of the vibration isolation and impact resistance unit”.

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Liu, J., Zhang, T. & Zhang, Y. Numerical study on flow-induced noise for a steam stop-valve using large eddy simulation. J. Marine. Sci. Appl. 12, 351–360 (2013). https://doi.org/10.1007/s11804-013-1195-9

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  • DOI: https://doi.org/10.1007/s11804-013-1195-9

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