涡桨飞机机体外表面噪声源计算与实验验证  

Numerical simulations of acoustic load on the external surface of turbo-prop aircraft fuselage under cruise condition

作　　者：董宁娟[1] 潘凯[1] DONG Ningjuan;PAN Kai(Aircraft Strength Research Institute of China,Xi’an 710065,shaanxi,China)

机构地区：[1]中国飞机强度研究所,陕西西安710065

出　　处：《声学技术》2021年第5期688-693,共6页Technical Acoustics

基　　金：国家自然科学基金资助项目(11574249、11074202)。

摘　　要：针对某型涡桨飞机在巡航状态下机体表面的主要噪声源(附面层噪声和螺旋桨噪声)分别进行了计算及结果验证。利用VA-One软件开展了机身表面不同位置处附面层噪声数值计算,同时利用半经验公式进行了螺旋桨近场噪声的计算研究。综合考虑两种噪声源的计算结果,与该型涡桨飞机的机体外表面噪声实测结果进行了对比研究。结果表明,仿真和理论计算相结合的计算结果与实测结果吻合较好,验证了算法的正确性。该算法可应用于涡桨飞机机身外表面噪声载荷及舱内噪声预计。The main noise sources(boundary layer noise and propeller noise) of a turboprop aircraft in cruise status are calculated and verified respectively. VA-One software is used to calculate the noise of the boundary layer at different positions of the fuselage, and semi-empirical formula is used to calculate the near-field noise of the propeller. The calculated results of the two noise sources are compared with the measured results of the external surface noise of the turboprop aircraft. The results show that the results of simulated and theoretical calculations are in good agreement with the measured results, which verifies the correctness of the algorithm. The algorithm can be used to predict the noise load on the outer surface of turboprop aircraft and the noise in the cabin.

关 键 词：涡桨飞机 螺旋桨噪声 统计能量分析法 

分 类 号：TU112.3[建筑科学—建筑理论]