Defining a Loss Coefficient after Run -- CFD Online Discussion Forums

September 10, 2015, 11:42	Defining a Loss Coefficient after Run	#1
MrNavierStokes New Member Alex Join Date: Jun 2015 Posts: 22 Rep Power: 0	Hello CFD-Community, I am currently working on a 2D simulation of a flow-through cascade and would like to use a UDF for the post-processing task. I have no experience in C language at all and need some help. The UDF should use the Facet-Maximum value of the total-pressure on the INLET to define the loss coefficient $\zeta_{(y)}$ as a new variable called "Zeta", so I can later use "Zeta" to calculate the mass-averaged value of it over a defined plane. So I need the UDF to take the Facet-Maximum value of the total-pressure on the INLET and calculate: $\zeta_{(y)}$ = $\frac{p_{tot,max,inlet} - p_{tot (y)}}{\rho \cdot c^{2}_{inlet}}$ Where $p_{tot (y)}$ refers to the Facet values of the total-pressure on a plane in my flow-field. So how do I start? I hope somebody can help me. Thank you very much! Regards

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