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A UDF for piston motion in dynamic mesh

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Old   May 15, 2017, 10:43
Red face A UDF for piston motion in dynamic mesh
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amin masumi
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Hi every body
I use fluent for about 6 years but I'm new to UDF. I never have used any UDF and now in a transient structural and fluent coupling I need to use a UDF to just move the piston. I mention that my geometry is a simple cylinder and piston model.
I used some UDFs but the piston doesn't move.
Can any one help me? Thanks!
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motion, piston, udf, wall

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