Simulation of a free falling wedge into water 2D

nico765 · October 30, 2007, 14:39

Hello,

I would like to model a free falling wedge in water. Something like that:

.

I'd like to solve it using mesh motion (but no deformation): the mesh is moving but its topology and relative position are fixed.

In this 2D case, i have 3DOFs. (X,Y, rotation around Z).

So the solving process would be:
1) time t
2) solve flow
3) compute forces
4) 'move' mesh (move=translate and rotate) solving the equation of motion.
5) update boundaries
6) go to time t+dt

So my first question is: does this look OK and feasible?

My second question is about the implementation:

Looking through the forum and trying a few things, I would use rasInterFoam as basis of the flow solver. Moving the mesh seems also ok (mesh.move();.....). But i am struggling at point 5.

In the main I will solve for the mesh velocities (after getting the forces); (here U,V and omega). How can I send (in a nice way) these values to the boundaries?.

Regards,

Nicolas

nico765 · January 9, 2009, 11:26

anyone could provide an answer?

Regards,

Nicolas

prashant24983 · January 10, 2009, 16:26

I haven't tried it but i believe you should look into icoDyFoam

prashant24983 · January 11, 2009, 03:47

sorry, I was talking about interDyFoam

October 30, 2007, 14:39	Hello, I would like to mode	#1
nico765 Member nicolas Join Date: Mar 2009 Location: Glasgow Posts: 42 Rep Power: 17	Hello, I would like to model a free falling wedge in water. Something like that: . I'd like to solve it using mesh motion (but no deformation): the mesh is moving but its topology and relative position are fixed. In this 2D case, i have 3DOFs. (X,Y, rotation around Z). So the solving process would be: 1) time t 2) solve flow 3) compute forces 4) 'move' mesh (move=translate and rotate) solving the equation of motion. 5) update boundaries 6) go to time t+dt So my first question is: does this look OK and feasible? My second question is about the implementation: Looking through the forum and trying a few things, I would use rasInterFoam as basis of the flow solver. Moving the mesh seems also ok (mesh.move();.....). But i am struggling at point 5. In the main I will solve for the mesh velocities (after getting the forces); (here U,V and omega). How can I send (in a nice way) these values to the boundaries?. Regards, Nicolas

January 9, 2009, 11:26	anyone could provide an answer	#2
nico765 Member nicolas Join Date: Mar 2009 Location: Glasgow Posts: 42 Rep Power: 17	anyone could provide an answer? Regards, Nicolas

January 10, 2009, 16:26	I haven't tried it but i belie	#3
prashant24983 Member Prashant Ojha Join Date: Mar 2009 Posts: 38 Rep Power: 17	I haven't tried it but i believe you should look into icoDyFoam

January 11, 2009, 03:47	sorry, I was talking about int	#4
prashant24983 Member Prashant Ojha Join Date: Mar 2009 Posts: 38 Rep Power: 17	sorry, I was talking about interDyFoam

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