Hi Everyone

I am trying to simulate heave motion of a ship (2d)using dynamic meshing. The problem I am facing is that the remeshing feature of the dynamic meshing scheme doesn't works during my simulation, though I have enabled it.

Smoothing feature works well. But because the remeshing feature doesn't works, it results in negative cell volumes.

I have tried both trangular as well as quadrilateral elements.

Please help me.

Thanks in advance.

Manoj

decrease your time step.

Thanks for the reply.

Now my simulation is working well. Actually the problem was I had not defined the boundary adjacent to the fluid (deforming zone) and the moving boundary (ship hull), as deforming. In my problem symmetry axis deforms.

I have one more doubt. Which boundary condition should I apply at the free surface? I want to simulate the freesurface (air-water interface) with out using VOF model.

Thanks

Manoj

[sohail_27]

Hi,
I am trying to run simulation (2D) for 3 bladed NACA 0012 airfoil in vertical motion with respect to central axis using gambit and fluent. I know how to create mesh for single airfoil and run simulation on it, but i don't know how to create mesh for airfoil and to rotate it in fluent. I would be glad if anyone could help me out.
Here is a youtube video of what i actually want to do. Please help me out guys, its part of my thesis.
http://www.youtube.com/watch?v=1eyEtzdHDEE

Regards.