HELP: unsteady solving of Moving body in fluid

May 21, 2003, 10:58

If the body is moving, then the grid attached on it is moving, too. But I don't use refference on the body.

For time t, assuming I get the flow field at t+dt and velocity of the body. Then I move the body and grid. But how can I get those flow state on the new grid?

May 22, 2003, 00:21

There are two ways:

1. Decoupled. solve flowfield of t+dt using grid at t.

Then move the body explicitly.

2. Iterative. The above two procedures are repeated

untill a certain convergence is obtained. I think you need do the second way.

May 21, 2003, 10:58	HELP: unsteady solving of Moving body in fluid	#1
Quain Tchew Guest Posts: n/a	If the body is moving, then the grid attached on it is moving, too. But I don't use refference on the body. For time t, assuming I get the flow field at t+dt and velocity of the body. Then I move the body and grid. But how can I get those flow state on the new grid?

May 22, 2003, 00:21	Re: HELP: unsteady solving of Moving body in fluid	#2
versi Guest Posts: n/a	There are two ways: 1. Decoupled. solve flowfield of t+dt using grid at t. Then move the body explicitly. 2. Iterative. The above two procedures are repeated untill a certain convergence is obtained. I think you need do the second way.

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