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Old   July 30, 2002, 03:47
Default Sliding mesh
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I'm trying to simulate the movement of a car in a parking. So, I'm using a sliding mesh technique but to do it, I need to let a fluid space between the car and the interface. We assume that this part of fluid move in the same direction and the same velocity as the car. So, to obtain results more accurate, my first idea was to reduce this fluid part to a minimum but now, my results show a gradient in the interface.

Was I wrong ? Fluent have admitted that it was a bug in the version 5.1 but that it would be corrected in the next version. Has anyone the same problem ?


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Old   July 30, 2002, 04:41
Default Re: Sliding mesh
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No problems anymore with sliding mesh. You should not make the moving zone as small as possible. Take the interface not to close to your walls.

To start your simulation, make sure you have a good initial state. You can obtain a good start by letting Fluent converge your case with a moving reference frame instead of a sliding mesh. After convergence, switch to moving mesh. If you don't work this way, you start your transient simulation with the air around your car moving with the same speed of your car (the speed of the moving mesh). This is, of course, wrong.

Laika, still orbiting
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