APFSDS弹托分离干扰三维流场数值模拟

通过应用多块复合网格生成法的网格生成技术,对尾翼稳定脱壳穿甲弹 (APFSDS)的外形进行适当简化后,生成了三瓣弹托对称分离的三维贴体网格.在此网格生成的基础上,对其分离过程应用TVD有限体积格式进行了三维流场数值模拟,并将气动力计算结果与风洞实验结果进行了对比,结果表明数值计算结果合理.这为新一代的尾翼稳定脱壳穿甲弹的设计与研制提供了一定的参考与帮助.

Three-dimension numerical simulation for APFSDS sabots separating and discarding flow field

This paper has processed a three-dimension numerical simulation for APFSDS sabot separating and discarding. Two types of grid generation methods, arc length grid generation method and Poisson equation grid generation method, have composed of the technique of multi-method and division blocks grid generation method. After simplified the shape of APFSDS, it has generated the mesh. The finite volume TVD scheme is educed based on Harten two-dimension TVD scheme in the Descartes coordinate system, and the Euler equations are developed. The method is applied to the APFSDS sabots separating and discarding three dimensional flow field. It has also given the resistance coefficient and lift coefficient and pitching moment of the sabot, and its comparison between the experimentation and computation. The compares imply that the simulation results are fit, and the method can give some enlightenment for the future design of APFSDS.