【摘要】 本文使用非线性脉动气流方程组计算管道系统的压力脉动,根据连接元件压力的相容性和气流的连续性,应用修正匀熵理论,给出了统一的边界处理方法.计算方案中在管道内部计算点上,采用高精度的Lax-Wendroff有限差分方案的Richtmyers两步法,在管道边界点上,采用修正匀熵理论特征线计算法.计算值与试验值两者吻合得较好.由于一般国产计算机都能满足要求,所以本方法适合我国当前生产情况.更多还原

【Abstract】 In this paper, the nonlinear system of. equations describing the pulsation of gas flow were used to compute the pressure pulsation of the piping systems. The methods of the overall treatment of boundaries were given according to the pressure compatibility of inter(?)onnecting elements and the continuity of gas flow, and by use of the modified homoertropic theory. In the computing scheme, We made use of the high accurate Richtmyers two-step version of the Lax-Wendroff finite differential scheme at the internal computing points and the modified homoentropic theory Characteristic mesh method at the boundaries. The values obtained in calculation agree well with that obtained experimentally. Since most homemade computers meet the requirements, this method can be recommended for general use in our country in its present development of production technology.更多还原