Multi-block patched grids in conjunction with a finite volume time domain (FVTD) algorithm are used to solve classic multi-body electromagnetic scattering problems. The governing equations of the Maxwell equations are cast into three-dimensional general curvilinear coordinates. The approach uses four-stage Runge-Kutta scheme for time integration and flux vector splitting based on eigen structure of flux Jacobian matrices for spatial discretization. Monotonic upstream shemes for conservation laws (MUSCL) scheme for interpolation is used for the dependent variable. The resolution for temporal discretization is second order and that for spatial discretization is third order. Numerical results for the radar cross section(RCS) of a classical configuration agree well with the analytical results. And the results for multi-body calculation agree well with that in references. It shows that the algorithm developed is able to simulate complex topology configuration (including multi-body) problems.

A high-order accurate algorithm, which consists of WCNS-E-5 for inviscid term, fourth-order accurate scheme for viscous term and corresponding fouth-order boundary scheme, is carried out on the heat transfer distribution on body surface in a hypersonic viscous flow. The effect of grid Reynolds number on heat transfer at stagnation point and the influence of different boundary schemes on heat transfer distribution are investigated. A flow past a blunt cone with high attack angles is simulated numerically. It is shown that WCNS-E-5 is able to permit large spatial scale near the body. The physical phenomena captured by WCNS-E-5 with high-order accuracy are real, clear and high resolving in the whole flowfield. The heat transfer solutions are reliable and accurate.