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October 5, 2001, 14:59 |
[gravitational force and checker board prob]
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#1 |
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I am trying to solve the free-suface problem. Interface-Capturing method and SIMPLE method, I used. for free-surf. , I added gravitational forcing term in my code. in O-H type, especially in symmetry plane, checkerboard problem appeared. I think gravitational forcing term makes that problem. Is there anyone who experience such case ? and give any comment ?
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October 6, 2001, 10:19 |
Re: [gravitational force and checker board prob]
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#2 |
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How is your gravititional force being handled? consevative or non-conservative form?
ie. rho*g [discontinuous at interface ] or just g? maybe try some different kinds of smoothing of rho for your gravitational term and see what happens? If your density ratios are high your dealing with trouble. Comments.. I'm not a fan of collocated SIMPLE methods so I would suggest if you have trouble with checkerboard problems then try the problem with a staggered grid. Either that or improve upon the Rhi-Chow algorithm for discontinuous terms... |
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November 1, 2001, 07:55 |
Re: [gravitational force and checker board prob]
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#3 |
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What is the aim of square brackets in the title?
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