Active Flow Control for Interaction Noise Reduction of Contra-Rotating Open Rotors
Active Flow Control for Interaction Noise Reduction of Contra-Rotating Open Rotors
复制标题
用于减少对转开式转子交互噪声的主动流量控制
DOI：
10.2514/1.j053756
复制
发表时间：
2013
期刊：
影响因子：
2.5
通讯作者：
J. Delfs
中科院分区：
文献类型：
--
作者：
R. Akkermans;A. Stuermer;J. Delfs
降低对转开式转子干扰音噪声的一种可能方法是采用后缘吹气，减小前旋翼尾迹的动量亏损，从而减小后旋翼与后旋翼的干扰。在这一贡献中，提出了前旋翼后缘吹气对降低对旋开式转子干扰噪声的评估。为此，德国航空航天中心设计了一种通用的反向旋转开放式旋翼，该旋翼经过修改，包括了在前旋翼叶片处的后缘吹气。采用德国航天中心计算流体力学程序TAU，对基线和后缘吹气布局进行了非定常雷诺平均的N-S模拟。随后，使用Ffowcs-Williams/Hawking工具APSIM+对两种构型进行了气动声学分析。结果表明，气动性能的差异可以忽略不计，非定常载荷显著降低。
A possible way to decrease interaction tone noise of a contra-rotating open rotor is through the application of trailing-edge blowing by reducing the momentum deficit of the front rotor wake, and therefore its interaction with the aft rotor. In this contribution, an assessment of front-rotor trailing-edge blowing is presented for the reduction of contra-rotating open-rotor interaction noise. For this purpose, the German Aerospace Center designed a generic contra-rotating open rotor that has been modified to include trailing-edge blowing at the front rotor blades. With the German Aerospace Center computational fluid dynamics code TAU, unsteady Reynolds-averaged Navier–Stokes simulations have been made of the baseline and the trailing-edge blowing configuration. Subsequently, an aeroacoustic analysis has been performed with the Ffowcs-Williams/Hawkings tool APSIM+ for both configurations. The results show negligible differences of the aerodynamic performance, with significantly lower unsteady loading of the...