Numerical prediction of marine propeller noise in non-uniform inflow
Numerical prediction of marine propeller noise in non-uniform inflow
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DOI：
10.1007/s13344-013-0003-2
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发表时间：
2013-02
影响因子：
1.6
通讯作者：
Yu-cun Pan;Huaixin Zhang
中科院分区：
文献类型：
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作者：
Yu-cun Pan;Huaixin Zhang
对螺旋桨与非均匀来流相互作用的声辐射进行了数值研究。计算中采用了DTMB 4118型船用螺旋桨的真实的几何形状，采用滑移网格技术处理螺旋桨的旋转运动。对DES（Detached Eddy Simulation）方法在捕捉螺旋桨非定常力和力矩方面的性能与实验进行了比较。利用Farassat提出的FW-H（Ffowcs Williams-Hawkings）方程的时域积分解1A，对远场声辐射进行了预测。讨论了螺旋桨在两种不同速度分布下的声压和指向性图。
A numerical study on the acoustic radiation of a propeller interacting with non-uniform inflow has been conducted. Real geometry of a marine propeller DTMB 4118 is used in the calculation, and sliding mesh technique is adopted to deal with the rotational motion of the propeller. The performance of the DES (Detached Eddy Simulation) approach at capturing the unsteady forces and moments on the propeller is compared with experiment. Far-field sound radiation is predicted by the formation 1A developed by Farassat, an integral solution of FW-H (Ffowcs Williams-Hawkings) equation in time domain. The sound pressure and directivity patterns of the propeller operating in two specific velocity distributions are discussed.