actuationDiskSource which calculates Cp -- CFD Online Discussion Forums

July 16, 2020, 10:46	actuationDiskSource without Cp input	#1
TomWaits Member Tom Waits Join Date: Aug 2018 Posts: 42 Rep Power: 7	Hi All, The actuationDiskSource model in OpenFoam requires both a thrust (Ct) and power (Cp) coefficient to calculate the velocity induction factor a=1-Cp/Ct to calculate the thrust resisting the flow. I am interested in simply applying resistance to the flow (Ct) and calculating the resultant Cp. Is there a good reason as to why the thrust force cannot be found through T=1/2 rho U^2 A Ct ? Why do we need Cp in the actuationDiskSource source? Many thanks, Tom Waits Last edited by TomWaits; July 16, 2020 at 12:08.

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