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why more than one cells are required in a gap of 0.5mm?

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Old   December 5, 2010, 14:00
Default why more than one cells are required in a gap of 0.5mm?
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sreenivas
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Hi

I am just started using CFD .I am modelling small gap of 0.5mm.Could any body tell me why it is required to put more than one or two cells in that gap.I want to know more elaborate physics pertaining to this

Thanks in advance
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