Valve motion and dynamics

martinav · March 17, 2017, 10:11

I am currently simulating a valve motion , with fluid pressure (DFBI/overset)

The valve has a valve seat and it is observed in test that valve in having a tilted motion and continuous rubbing with valve seat is getting the valve stem damaged.

Can we simulate the same in Starccm, making both valve and valve seat as solids and see if they hit each other with varying fluid forces?

Kindly let me know, if this is possible and if possible some lights over the methodology.

Thanks in advance .

Martin

me3840 · March 21, 2017, 21:47

If I understand the problem correctly, this is very non-trivial.

You are best doing this as an FSI analysis. Leave the solid body interactions and deformations to an FEA code and have STAR-CCM+ obtain the displacements, while returning pressures and stresses to the FEA code.

STAR-CCM+ has a very good Abaqus coupling. There is some internal FEA capability, but I do not think it's good enough to do this analysis yet.

March 17, 2017, 10:11	Valve motion and dynamics	#1
martinav New Member Martin Join Date: Dec 2015 Location: Germany Posts: 2 Rep Power: 0	I am currently simulating a valve motion , with fluid pressure (DFBI/overset) The valve has a valve seat and it is observed in test that valve in having a tilted motion and continuous rubbing with valve seat is getting the valve stem damaged. Can we simulate the same in Starccm, making both valve and valve seat as solids and see if they hit each other with varying fluid forces? Kindly let me know, if this is possible and if possible some lights over the methodology. Thanks in advance . Martin

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March 21, 2017, 21:47		#2
me3840 Senior Member Join Date: Nov 2010 Location: USA Posts: 1,232 Rep Power: 24	If I understand the problem correctly, this is very non-trivial. You are best doing this as an FSI analysis. Leave the solid body interactions and deformations to an FEA code and have STAR-CCM+ obtain the displacements, while returning pressures and stresses to the FEA code. STAR-CCM+ has a very good Abaqus coupling. There is some internal FEA capability, but I do not think it's good enough to do this analysis yet.