Boundary condition
1 Attachment(s)
Hi,
I am zakir. I am trying calculate ship hull resistance by fluent. I have created structural mesh in pointwise. The of my mesh is attached. to this thread. I am facing difficulty assigning boundary condition to upper surface marked with red arrow in the figure . I have used side portion as symmetry boundary condition .Is this ok? Please give me some suggestions. Thank you in advance. You can send me email too at zakir_buet08@yahoo.com |
Quote:
Using symmetry boundary conditions is ok if only geometry is symmetrical and flow side angle is equal to zero. What is your problem assigning symm. boundary condition?! |
thank you for your reply . my geometry is symmetrical and flow side is equal to zero. can I use symm boundary condition at the top of the geometry?
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If I understand correctly the pink body is the ship, the blue one is the water; If you are assigning a simmetry boundary condition at the top of the water body you are considering that no waves (or very small waves) are present on the water surface: simmetry means zero gradient, so you have a flat water surface.
If considerably big waves are produced simmetry boundary is not correct. Daniele |
Thank you Daniele....
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