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Fluid structure interaction
Posted Feb 7, 2020, 2:48 p.m. EST Computational Fluid Dynamics (CFD), Structural Mechanics Version 5.4 2 Replies
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Hello I am trying to run a simulation for fluid structure interaction. In the definition section under the global Variable probe I am using an expression for the total forces acting on my model. The expression is -intop1(fsi.T_stressx) for drag and -intop1(fsi.T_stressy) for lift forces. But the expression is still orange and showing as unknown expression.
Can someone help me on this how to resolve this issue. Or is there any mistake in defining the expression??
Thanks in advance Sai Teja
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As far as I know there are two reasons that an expression might appear orange.
One is that the units are wrong. If you hover over the entry it will show the expected and actual units.
If the units are right probably the expression contains things COMSOL does not know about at this particular point in the program.
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Thank you so much Dave. That helped me.