| 李福新,石秀华,张宇文.转捩区长度对回转体流噪声的影响[J].,2000,19(3):28-32,44 |
| 转捩区长度对回转体流噪声的影响 |
| Effect of length of the transition zone on the sound radiation from the boundary layer of an axisymmetric body |
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| 中文摘要: |
| 本文通过分析回转体边界层转捩区声辐射的机理，就转捩区长度对回转体转捩区辐射声压谱的影响进行了讨论。结果表明：来流速度和回转体直径是影响回转体转捩区长度、也是影响回转体转换区辐射声压谱的主要因素；在来流速度和回转体直径相同时，则回转体外形对转板区长度的影响起主导作用。采用本文的方法所得的理论值与实测值之间的一致性较好。 |
| 英文摘要: |
| With the mechanism of acoustic radiation from the transition zone of an axisymmetric body analyzed, the effect of length of the transition zone on the sound pressure spectrum of the radiation of the transition zone is disscussed. It is shown that the fiow velocity and the diameter of an axisymmetric body are the main factors that infiuence the zone length and the sound pressure spectrum; and with the same flow ve locity and diameter, the head shape of an axisymmetric body has the decisive effect on the length of the transition zone. The calculated values are in agreement with the exper imental data. |
| DOI：10.11684/j.issn.1000-310X.2000.03.006 |
| 中文关键词: 回转体 转捩区长度 头部外形 声辐射 |
| 英文关键词: Axisymmetric body Length of transition zone Head shape Sound radiation |
| 基金项目:中船总“九五”预研重点项目 |
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