【摘要】 本文针对高压气体流动产生强冲击波的特点,利用近年来公认较好的高精度、高分辨率总变差不增(TVD)格式对圆柱形高压区气体向大气膨胀过程中产生的冲击流场问题进行了数值模拟。数值试验表明:采用高分辨率的TVD差分格式能够很好地描述高压气体冲击流场的波系结构,且没有出非物理振荡,对激波的分辨率高。更多还原

【Abstract】 In this paper,according to the character of strong shock wave generated by the expansion flow of high pressure and high temperature gases,the shocked flow field produced by me expansion flow of high pressure gases from cylindric regoin has been numerically simulated. The numerical results show that TVD scheme can fairly describe the shocked flow field structure,and has high resolution for shock wave.更多还原