Proposed Boundary Conditions for Gust-Airfoil Interaction Noise
Proposed Boundary Conditions for Gust-Airfoil Interaction Noise
复制标题
阵风-机翼相互作用噪声的拟议边界条件
DOI：
--
复制
发表时间：
2010
期刊：
影响因子：
--
通讯作者：
N. Sandham
中科院分区：
文献类型：
--
作者：
J. Kim;A. Lau;N. Sandham
本文提出了在阵风影响下直接计算翼型噪声的入流和出流边界条件。建议的边界条件是基于现有的分区海绵技术，主要用于衰减传出的干扰和吸收反射的计算边界。本文提出了一种改进的海绵技术，以提高声学解的精度，特别是在远场。对于有实体（如翼型）的流动，这种方法还没有发表过。建议的边界条件
This paper proposes inflow and outflow boundary conditions for direct computation of airfoil noise under the influence of atmospheric gusts. The proposed boundary conditions are based on the existing zonal sponge technique that has been used mostly to attenuate out� going disturbances and absorb reflections from computational boundaries. A modified form of the sponge technique is presented in this paper in order to enhance the accuracy of acoustic solutions especially in the far field. This type of approach has been unpublished for flows in the presence of a solid body such as an airfoil. The proposed boundary conditions