应用TVD有限体积格式模拟枪弹绕流

为了探讨弹丸底部流动规律，该文采用ＷａｎｇＪ．Ｃ．Ｔ的二阶ＴＶＤ有限体积格式求解Ｎａｗｖｉｅｒ－Ｓｔｏｋｅｓ方程进行枪弹绕流模拟。文中模拟了来流马赫数３和５的枪弹绕流，得到满意的波系结构，计算结果表明底部阻力系随马赫数的关系与实现结果符合良好，该方法除计算精度高，激波分辨率高和数值稳定等优点外，对边界处理比较灵活，对网格的生成质量和初场布置要求不高。

Numerical Simulation of Cartridge Flow with TVD Finite Volume Approach

To investigate flow at cartridge base, this paper presents numerical simulation of flow around cartridge with a 2nd order accuracy TVD finite volume scheme applied to solve Navier Stokes equations,which is based on Wang J.C.T scheme.Flow around cartridge with free flow Ma =3 and 5 are calculated,agreeable waves structrue is obtained.The results verify that the relation between drag coefficient of base and Mach number is in a good agree ment with the experiment.Besides high accuracy,high resolution of shock wave,nonoscillation,the method is easier to deal with the boundary condition and less strict with cell specification and first flowfield parameters arrangement.