Plane Flow Of High-precision Accuracy Of The Algorithm And The Characteristics Of Transient Simulation

The paper researches the transient time precision and the following problem of the results developing with time for 2-D high order blocking and matched method, at the same time, anlysing the stability of high order methods including boundary conditions. The results show that the domain decomposition and matched method using high order method can follow the time developing solution of Taylor problem well, the computation result of the flow over a single or two tandem arranging circular cylinder agree the experiment and others' results well, moreover, the panting results of lift and drag coefficient are better than others. The time following problem is worthy of being noticed and the paper prove that DDM can be used to solve transient flow problem.On the other hand, the paper researches the solution of Poisson equation and studies how to solve the equation in the Runge-Kutta method. The result show it is better when solve the Poisson equation at the third step in Runge-Kutta method.