[amin.z]

Hello

I have a case with moving wall with constant acceleration!
Which macro can define acceleration?
I have written an udf for moving wall due to mass flow exit in a nozzle based on newton law (6DOF) but for a constant input acceleration...?

Thanx

[syavash]

Originally Posted by amin.z

Hello

I have a case with moving wall with constant acceleration!
Which macro can define acceleration?
I have written an udf for moving wall due to mass flow exit in a nozzle based on newton law (6DOF) but for a constant input acceleration...?

Thanx

Hi,
I think you should calculate the instantaneous velocity based on Euler formula, that is: V/dt=F/m.
"F" can be calculated via a macro or directly, depending on your physics and geometry.
Goodluck