Investigation of turbulence-induced quadrupole source acoustic characteristics of a three-dimensional hydrofoil | |
Li, Rennian2,3; Liang, Wenna2,3; Han, Wei2,3; Quan, Hui2,3; Guo, Rong2,3; Tian, Pi Long2,3; Peng, Guoyi1 | |
刊名 | MODERN PHYSICS LETTERS B |
2020-05-20 | |
卷号 | 34期号:14 |
关键词 | Turbulent noise quadrupole sound source hydrofoil Reynolds number vortex |
ISSN号 | 0217-9849 |
DOI | 10.1142/S0217984920501456 |
英文摘要 | In order to investigate the turbulence-induced acoustic characteristics of hydrofoils, the flow and sound field for a model NH-15-18-1 asymmetric hydrofoil were calculated based on the mixed method of large eddy simulation (LES) with Lighthill analogy theory. Unsteady fluid turbulent stress source around the hydrofoil were selected as the inducements of quadrupole sound. The average velocity along the mainstream direction was calculated for different Reynolds numbers (Re). Compared to experimental measurements, good agreement was seen over a range of Re. The results showed that the larger the Re, the larger the vortex intensity, the shorter the vortex initial shedding position to the leading edge of the hydrofoil, and the higher the vortex shedding frequency (f(s)). The maximum sound pressure level (SPL) of the hydrofoil was located at the trailing edge and wake of the hydrofoil, which coincided with the velocity curl (omega) distribution of the flow field. The maximum SPL of the sound field was consistent with the location of the vortex shedding. There were quadratic positive correlations between the total sound pressure level (TSPL) and the maximum value of the vortex intensity (Gamma(max)) and velocity curl, which verified that shedding and diffusion of vortices are the fundamental cause of the generation of the quadrupole source noise. |
WOS研究方向 | Physics |
语种 | 英语 |
出版者 | WORLD SCIENTIFIC PUBL CO PTE LTD |
WOS记录号 | WOS:000537139300004 |
内容类型 | 期刊论文 |
源URL | [http://ir.lut.edu.cn/handle/2XXMBERH/155190] |
专题 | 能源与动力工程学院 |
作者单位 | 1.Nihon Univ, Coll Engn, Koriyama, Fukushima 9638642, Japan 2.Lanzhou Univ Technol, Coll Energy & Power Engn, Lanzhou 730050, Gansu, Peoples R China; 3.Key Lab Fluid Machinery & Syst, Lanzhou 730050, Gansu, Peoples R China; |
推荐引用方式 GB/T 7714 | Li, Rennian,Liang, Wenna,Han, Wei,et al. Investigation of turbulence-induced quadrupole source acoustic characteristics of a three-dimensional hydrofoil[J]. MODERN PHYSICS LETTERS B,2020,34(14). |
APA | Li, Rennian.,Liang, Wenna.,Han, Wei.,Quan, Hui.,Guo, Rong.,...&Peng, Guoyi.(2020).Investigation of turbulence-induced quadrupole source acoustic characteristics of a three-dimensional hydrofoil.MODERN PHYSICS LETTERS B,34(14). |
MLA | Li, Rennian,et al."Investigation of turbulence-induced quadrupole source acoustic characteristics of a three-dimensional hydrofoil".MODERN PHYSICS LETTERS B 34.14(2020). |
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