This document reports on some functions added to the parallel multi block CFD (Computational Fluid Dynamics) program, which is used for aerodynamic CFD analysis of HOPE-X (H-2 Orbiting Plane, Experimental) and HSFD (High Speed Flight Demonstration). The three new functions have been added mainly for the following reasons: (1) apply to a hypersonic flow, (2) use of an overset grid, and (3) introduction of multi component species system. First, the convection numerical flux calculation method has been changed to make it applicable to a hypersonic flow. Then, an overset grid using the Chimera method is introduced for the calculation of flows around a multi body. Third, the mass conservation law of each species and the energy dissipation terms due to diffusion are added to governing equations in order to calculate a rocket plume of multi component gas. Some examples of calculation by this extended CFD program are reported.
並列マルチブロックCFDプログラムの機能拡張
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