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培训班:计算气动声学介绍

Tutorial of Computational Aeroacoustics 

 

1. 目的:

针对国内各航空单位对开展气动声学、尤其是计算方面的工作需求,讲解计算气动噪声的基本方法和应用,包括气动声学基本理论、相关高精度格式和远场计算工具、和具体应用例子。本课程还将提供一系列例子程序演示帮助更好更快的掌握基本概念和相关方法。
 
2. 教材:

自编写讲义(handout)   

            
3. 参考书:

(a) Xin Zhang, University of Southampton, Seminar notes.

(b) S.W. Rienstra & A. Hirschberg, Eindhoven University of Technology, "An Introduction to Acoustics", 2003.

为保护版权,主要参考书电子版密码将随堂提供。

Aeroacoustic.rar  Lecture Notes On The Mathematics Of Acoustics (Wright).part1.rar Lecture Notes On The Mathematics Of Acoustics (Wright).part2.rar Lecture Notes On The Mathematics Of Acoustics (Wright).part3.rar caa4thprobs.rar

4. 内容(草稿,课件建设中):

(0) 气动噪声介绍;Intro.pdf

(1) 声学原理;[演示:单极子  偶极子 四偶极子 poles.zip]  AcousticsI.pdf AcousticsII.pdf

(2) 气动声源;AcousticSources.pdf  Structure.pdf

(3) 空域计算格式;CAASpatial.pdf

(4) 时域计算格式;

(5) 边界条件;

(6) 应用举例;

(7) 部分算例。

The following figures are from our previous computational works.

a. Sound scattering by the central cylinder (CAA Workshop 2) 

Left: by cylindrical coordinates; Right: by immersed boundary method plus adaptive mesh, where a computation blow can be found in the end of the animation.

b. Sound radiation from a unfranged duct

c. Fan noise radiation from an engine