Pressure loss coefficient

rmcfd · January 28, 2015, 08:18

Hi Foamers,

I am constantly confronted with pressure loss coefficients if i do some CFD-Simulations. So I ask you, is it possible to consider a pressure loss cofficient zeta at the outlet?

deltaP = zeta * v^2 * rho/2

Thanks for your help!

gill11a · January 28, 2015, 09:28

rmcfd, every point in a flow field has its own pressure coefficient. So, yes. You can consider a pressure loss coefficient at the outlet
Keep in mind that pressure loss coefficient is used to describe the relative pressures in the flow field. So, the velocity that you are using in the equation should be the freestream velocity.

January 28, 2015, 08:18	Pressure loss coefficient	#1
rmcfd New Member Join Date: Jul 2014 Posts: 5 Rep Power: 12	Hi Foamers, I am constantly confronted with pressure loss coefficients if i do some CFD-Simulations. So I ask you, is it possible to consider a pressure loss cofficient zeta at the outlet? deltaP = zeta * v^2 * rho/2 Thanks for your help!

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January 28, 2015, 09:28		#2
gill11a New Member Ravinder Gill Join Date: Sep 2014 Location: Windsor,ON Posts: 19 Rep Power: 12	rmcfd, every point in a flow field has its own pressure coefficient. So, yes. You can consider a pressure loss coefficient at the outlet Keep in mind that pressure loss coefficient is used to describe the relative pressures in the flow field. So, the velocity that you are using in the equation should be the freestream velocity.