writing a dynamic mesh udf
Hi I want to research the particular motion of a solid body in a moving fluid using Fluent dynamic mesh capability. At first i want to give a solid square a constant velocity in (minus x) direction (counterwise of fluid velocity) in a duct (2d) and solve the flow field .I think that i must right a udf to define the constant velocity of square.it is worthful to remember that the case is unsteady. How can i write it and do you have any other suggestion? . I would appreciate any help.
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