supersonic/initial pressure -- CFD Online Discussion Forums

May 10, 2006, 14:23	supersonic/initial pressure	#1
Ynot Guest Posts: n/a	Hi guys, How does the supersonic/initial pressure in the mass flow inlet BC affect a compressible flow simulation? I couldn't find how fluent uses the value entered in this field. I am getting a rather weird behavior. I have a propane inlet with a fixed mass flowrate and an initial pressure of 240 psi. When using these values, its giving me a 500 Psi pressure in the manifold from the tank to the combustion chamber! and then when it enters the chamber it becomes more of a physical value. any help would be appreciated.

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