【摘要】 <正> 解有激波的气体力学问题的数值解法,主要有特征线法和有限差分法两类。特征线法一般能给出高的精度,但当激波很弱、与特征线几乎平行时就需特殊处理。有限差分法的研究和发展更广,有人工粘性法、激波捕捉法、分离奇性法等处理激波的方案,它们又各有其特殊的技巧和问题。更多还原

【Abstract】 A new fast computational method for one-dimentional unsteady gas flow with shock wave is developed. The differential equations and boundary conditions in new. Lagrangian variables are formulated. We calculated a specific case that the piston is moving with constant acceleration. In this example the position of the Shock wave is found with good accuracy. Before the formation of the shock wave, the simple wave has an exact solution. Comparism of our computational results with the exact solution shows satisfaction in accuracy.更多还原