Computation of Aerodynamic Sound through Fluid and Solid Boundaries

研究的目的是发展求解流体和固体边界气动声音的计算方法。以飞机和汽车的气动声为研究对象，采用基于笛卡尔的方法对复杂的几何形状和声音传播进行了精确处理。通过对某型喷气发动机风扇噪声的CFD-CAA耦合仿真，验证了基于笛卡儿的方法与浸入边界法的有效性。建立统一的流固边界气动声计算方法有待进一步研究。

The objective of the study was to develop the computational approach to solve the aerodynamic sound through fluid and solid boundaries. The target was the aerodynamic sound from aircrafts and automobiles, thus the Cartesian-based approach was used to treat the complicated geometries as well as the sound propagation precisely. The Cartesian-based approach coupled with Immersed Boundary Method proved its usefulness through the CFD-CAA coupled simulation of fan noise from a jet engine. The further study is required to establish the new unified method to compute aerodynamic sound through fluid and solid boundaries effectively.