模拟一维非定常流动的FVM-TVD法

朱小慧　 顾宏中　

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。
关键词：混合式脉冲转换器系统； 一维非定常流动； 有限体积法； 总残差减小
分类号：TK411．3：O24　文献标识码：A
文章编号：1000-0909（2001）02-0169-04

FVM-TVD Method for One Dimensional Unsteady Flow

ZHU Xiao-hui（School of Power and Energy Engineering,Shanghai Jiaotong University,Shanghai 200030,China）　
GU Hong-zhong（School of Power and Energy Engineering,Shanghai Jiaotong University,Shanghai 200030,China）　

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.
Keywords：MIXPC turbo-charged system; One dimensional unsteady flow; Finite volume method; Total variation diminishing

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收稿日期：2000年4月14日

修稿日期：2000年6月5日

出版日期：2001年3月25日