【摘要】 介绍了进排气系统一维非定常流动的 FVM- TVD法 (总残差减少的有限体积法 )。控制方程的离散采用有限体积法 ,数值通量采用考虑截面变化的二阶 TVD格式。用该方法对 MIXPC系统排气管内的压力波进行了模拟 ,并与实测值对比 ,两者吻合较好 ,说明该方法可以使用更多还原

【Abstract】 In this paper,a FVM-TVD method for simulation of one-dimensional unsteady flow in inlet and exhaust manifold of ICE has been constructed.Finite Volume Method is a basic principle to yield the discretised equatin of conservation laws,and a second order TVD scheme including the terms concerning the cross-section variation correctly has been adapted to calculate the numerical flux.The pressure wave before turbine of diesel engine with MIXPC turbo-charging system has been simulated,and compared it with experiment.The result shows that simulation by this method is coincided with experiment result.更多还原