Hello, I am trying to simulate the effet of trailing edge flap. I have created a udf based on cg motion but i am facing problems. The rotor has 4 zones, 3 zones each containing the trailing edge flaps for each blade (three blades) and one zone containing the remaining. I am rotating the main domain Zone1 with all the blades with sliding mesh method and all other zones are rotating relative to the first zone. So far no problems. Now as the domain with blades is rotating along z-axis (0,0,1), At the same time I want to flap the trailing edge with a function lets say sin theta degrees where theta is azimuthal. when the blade is between 180 and 360 degrees, i want the trailing edge to flap with function A I m using the dynamic mesh method with a rigid body and the trailing edge is not deforming. initially, i am giving the cg points x and y as the point about which the trailing edge will flap for each blade and hooking the udf in the dynamic mesh.
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