Flotran: Lift and drag -- CFD Online Discussion Forums

January 18, 2005, 11:27	Flotran: Lift and drag	#1
Joe Bystryk Guest Posts: n/a	I am trying to calculate the lift and drag on an airfoil using Flotran. I select all the nodes attached to the body. I can then use the 'intsrf, press' command to get the pressure forces on the body. When trying to use 'intsrf, tauw' command I recieve an error message that tauw is not a valid DOF. When trying to add DOF, tauw does not appear as an option. Can anyone help, or suggest a walkthrough of calculating the shrear stresses on an body in an external flow using Flotran? Cheers.

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