Discharge coefficient in function of pressure ratio -- CFD Online Discussion Forums

September 21, 2012, 05:36	Discharge coefficient in function of pressure ratio	#1
Roland R Senior Member Roland Rakos Join Date: Mar 2009 Posts: 131 Rep Power: 17	Hello, I calculated compressible high speed flow in steady state. I determined the discharge coefficient from the results in case of some pressure ratio (pi = 0.6 - 0.125). Based on my calculations, the discharge coefficient is constant in this range. (alha = 0,85) The discharge coefficient was investigated at the full geometry. What do you think about this? Can it be correct? Is there pressure ratio range where the discharge coeff. changes in the function of pressure ratio? Thanks Roland

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