一维非定常流动的FVM-TVD方法与混合式脉冲转换器系统

FVM-TVD Method for One Dimensional Unsteady Flow and Mixed Pulse Converter Turbo-Charged System

介绍了一种研究进排气系统一维非定常流动的 FVM- TVD(总残差减少的有限体积法 )方法 :控制方程的离散采用有限体积法 ,截面数值通量采用考虑截面变化的二阶 TVD格式 .用该方法对混合式脉冲转换器 (MIXPC)系统排气管内的压力波进行了模拟 ,并与实测值作了对比 。

An FVM TVD method for the solution of one dimensional unsteady flow in inlet and outlet manifold of ICE was constructed. Finite volume method is a basic principle to yield the discretised equation of conservation laws, and a second order TVD scheme including the terms concerning the cross section variation correctly is adopted to calculate the numerical flux. The pressure wave before turbine of diesel engine with MIXPC turbo charging system was calculated, which was compared with the experiment. The result shows good approximation of this method.