Numerical study about effect of ambient pressure on inner thrust of underwater two-phase ramjet

The inner flow field of the underwater two-phase ramjet was studied numerically by using CFD commercial software FLUENT 6.3. The effect of ambient pressure on the inner thrust of the ramjet was investigated. A steady flow, with incompressible air and unexchanging heat are considered. At the condition of same gaseous phase injection angle, ambient pressure and sail velocity, as the gaseous phase mass flow rate increases, the inner thrust and the dynamic part of the inner force increase, and the static part of the inner force remains almost unchanged. At the condition of same sail velocity, gaseous phase injection angle and mass flow rate, as the ambient pressure increases, the inner thrust and the static part of the inner force increase, and the dynamic part of the inner force remains almost unchanged.