coupling structural-fluid problem

RanJRanJ Member

hi guys, i want to do 2-way -coupling  system (using transient structural- fluent) 

in the input there's a pressure that increase little by little and attend 400000 pa 

in reality it's supposed , that the fluid pushs the piston (whish have a stifness and a preload) 

so i put layering method , and system coupling in output of fluid (which i define as a wall)

should i active 1dof to make wall able to translate ? 

 i appreciate your help

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