I want to simulate an airplane flies over a wavy water line. This is a 3D simulation that takes the "Wing In Ground" effect into account. In the first step, I try to simplify the simulate and consider an airfoil profile in the 2D domain.
I assume two cell zone areas. One of which contains the model while the other is designed to generate waves via the VOF model. I have a problem here with defining my B.Cs. The lower zone is stationary and the upper is moving in -X direction with the speed of 30 m/s.
When I assume Pressure inlet boundary condition for the upper zone with mesh motion (Transitional Sliding Mesh) the solution diverges. While I use Pressure Outlet for all B.Cs of the upper domain, during the movement from right to left, the direction of velocity vectors are from right to left which is incorrect.
Is there any individual who comes up with a similar problem? I attached the pic of the domains hereunder.
The other problem is that I could not use the periodic repeat for the interface. I read the ANSYS help but I am of the idea that the Periodic Repeat can be used just for Turbomachinery problems not for the kind of simulations like mine?
Hi Bahador Bakhtiari Nia ,
I think it's better to simulate this project using overset boundary condition. In this way, you have one zone for fluid (water + air) and one zone for the airplane. Then you can move the airplane from left to right without facing these problems.
Dear Ashkan
Thanks for your comprehensive guide. however, I am of the idea that overset mesh will not result in the continuous contour of velocity and etc. There might be a jump in contours. Moreover, most scholars use the sliding mesh for simulating two cars passing each other on a road or bounded tunnel.
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