基于大涡模拟的螺旋桨噪声性能分析

Propeller noise performance analysis based on large eddy simulation

摘要:

采用LES大涡模型方法耦合FW-H方程的混合噪声数值模拟方法，对螺旋桨在起飞和着陆两种构型下的气动与噪声性能开展了数值模拟研究，并与风洞试验测量数据进行了比较。对比结果分析，在给定接收点的声压级计算结果与风洞试验结果偏差不超过2dB。对于着陆构型下的螺旋桨，各声压监测点处计算结果与风洞试验结果偏差的平均值约为1.97dB；对于起飞构型下的螺旋桨，各声压监测点处计算结果与风洞试验结果偏差的平均值约为1.04dB。基于LES模型大涡模拟耦合FW-H方程的混合噪声数值模拟方法可以真实的获取螺旋桨气动性能与气动噪声性能，并且仿真结果可以满足工程应用。

Abstract:

The aerodynamic and noise performances of the propeller in take-off and landing configurations are numerically simulated using a hybrid noise numerical simulation method coupled with the FW-H equations of the LES large vortex model method, and compared with the measured data from the wind tunnel test. The comparative results show that the deviation of the calculated sound pressure levels at the given reception points from the wind tunnel test results is not more than 2 dB, and the average value of the deviation of the calculated sound pressure levels from the wind tunnel test results at each sound pressure monitoring point is about 1.97 dB for the propeller in the landing configuration, and the average value of the deviation of the calculated sound pressure levels from the wind tunnel test results at each sound pressure monitoring point is about 1.04 dB for the propeller in the take-off configuration. The hybrid noise numerical simulation method based on the LES model vortex simulation coupled with the FW-H equation can realistically obtain the aerodynamic performance and aerodynamic noise performance of the propeller, and the simulation results can meet the engineering applications.