Inlet/combustor/nozzle coupled flow field calculation for ramjet

An efficient multi-code CFD solver was designed to simulate the integrated flowfields in a ramjet engine in a loosely coupled manner. The multiblock, multigrid, single-species, turbulence flow solver was used to simulate the flows in the inlet, while a multi-species one to simulate the flows in the combustor and nozzle. The k-g turbulence model was used in the calculations. By means of carefully designed message feedback of mass flow rate, static pressure, etc., on the inlet-combustor interface, the flowfield of inlet and combustor can be solved efficiently. The turbulent flowfields obtained are reasonable.