A method for computing flows about complex configurations with moving boundaries

A Method was presented for computing flows about complex configurations with moving boundaries by introducing the moving coordinate method together with the cut-cell method and the multi-block method. The present method enables the numerical analysis of flows about moving complex configurations without deforming grids. This method was applied to branch flows for opening process of a high-voltage gas circuit breaker. As results it was shown that the flows are classified into four patterns depending on the relative location of the fixed electrode and the nozzle region of the cylinder, and that the characteristic phenomenon appears at the beginning of movement. It was confirmed that the present method works well for the moving boundary problems about complex configurations.