Numerical Modelling of Aerodynamic Noise in Compressible Flows

• 作者: S?awomir Dykas Sebastian Rulik W?odzimierz Wroblewski
• 来源期刊: 流体动力学(英文)
• 学科: 数学
• 关键词: COMPUTATIONAL Aeroacoustics Noise PRESSURE WAVES CAVITY Noise
• 年，卷（期）: 2012,（3）
• 页码范围: 65-69
• 页数: 5页
• 分类号: O1

摘要

The solution of the AeroAcoustics (CAA) problems by means of the Direct Numerical Simulation (DNS) or even the Large Eddy Simulation (LES) for a large computational domain is very time consuming and cannot be applied widely for engineering applications. In this paper the in-house CFD and CAA codes are presented. The in-house CFD code is based on the LES approach whereas the CAA code is an acoustic postprocessor solving the non-linearized Euler equations for fluctuating (acoustic) variables. These codes are used to solve the aerodynamically generated sound field by a flow over a rectangular cavity with inlet Mach number 0.53.