华中科技大学学报（自然科学版）2023，Vol.51Issue(12)：130-136,7.DOI:10.13245/j.hust.231228
均匀流中泵喷推进器噪声特性数值模拟研究
Numerical simulation of noise characteristics of pump-jet in uniform flow
摘要
Abstract
Based on the feasibility of the numerical verification method with the standard mode propeller E779A,the flow field characteristics of a pump-jet were calculated,and the steady-state results were verified with the experimental values.The method coupling computational fluid dynamics(CFD)and aeroacoustic analogy was adopted to calculate the noise sources and far-field noise of each component of the pump-jet.The results show that surface noise sources are mainly located at the leading edge and inner wall of the duct and stator,and on the blade tip and guide edge of the rotor.The results of sound pressure level(SPL)spectra show that the whole component and rotor have obvious line spectrum characteristics at blade passing frequency(BPF)and harmonic frequencies.In terms of the contributions to the noise,the rotor is the dominant part,while the stator contributes the least.The directrivity of overall sound pressure level(OASPL)in axis plane is an"8"shape which is similar as a dipole source.The results of this paper are helpful to understand the pump-jet noise characteristics and can be useful to develop designs for the noise reduction.关键词
泵喷推进器/计算流体力学/Curle噪声源模型/FW-H方程/水下辐射噪声Key words
pump-jet/computational fluid dynamics(CFD)/curle noise sources model/FW-H(Ffowcs Williams-Hawkings)equation/underwater radiated noise分类
交通工程引用本文复制引用
孙聪,岳启辉,王文全,王超..均匀流中泵喷推进器噪声特性数值模拟研究[J].华中科技大学学报（自然科学版）,2023,51(12):130-136,7.基金项目
黑龙江省自然科学基金资助项目(LH2021E042) （LH2021E042）
中央高校基本科研业务费专项资金资助项目(GK2010260353). （GK2010260353）
