以计算流体力学软件FLUENT工具,二维增升装置模型L1T2为基准,采用LES模型和Ffcows WilliamsHall积分方法,计算二维增升装置前缘缝翼的远场噪声.通过计算24组不同缝道参数的二维增升装置的缝翼噪声和最大升力系数,分析了气动性能与噪声强度之间的关系,并采用建立响应面的方法对缝道参数进行了优化,使原增升装置模型的噪声强度得到了降低.结果表明:当缝道参数大小适中时噪声总声压级较小,反之噪声总声压级显著增大；当缝道宽度减小而重叠量增加时,噪声总声压级持续减小.适当的缝道参数组合是能够使所设计的增升装置较好地兼顾气动性能和噪声强度要求的.%The far-field noise of two dimensional multi-element high lift device L1T2 slat model was calculated using commercial CFD software FLUENT. LES model was used in flow field analysis to provide noise source data, while the FW-H method was used to calculate the far-field noise levels. To study the effects of gap and overlap on both maximum lift coefficient and noise levels, a total of 24 different combinations of gap and overlap were analyzed, and two response surface models were built from the results. The response surface models indicate that it is possible to find reasonable combinations of gap and overlap to achieve a balance between aerodynamic performance and noise characteristics.
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