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Old   April 14, 2011, 14:22
Default CFX Mesh interfaces
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Can some one please explain why a GGI interface is preferred for Fluid-solid and solid-solid connections in CFX rather than the one-to-one interface
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Old   April 15, 2011, 07:04
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Because a GGI uses full 2-way coupling between the domains but a 1to1 only uses 1-way coupling. A GGI will probably converge faster. Not sure but they may have fixed this in V13.
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Old   April 21, 2011, 17:30
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Glenn I think the coupling concept is applicable only in a Fluid structure interaction (FSI) but is it indeed needed at any flluid - solid (or) solid - solid interface. May be a newbie question but please clarify upon this.
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Old   April 26, 2011, 22:12
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The coupling I am refering to here is the coupling of the heat equation in the fluid domain with the heat equation in the solid domain. These two temperature fields are coupled through the interface. Hence my answer is talking about the tightness of the coupling.
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Old   April 28, 2011, 09:11
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Oh k I was just getting confused with the FSI thing when you mentioned of coupling.
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Old   April 28, 2011, 18:46
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Coupling is just a generic term for joining one set of equations to another set. The is coupling between the pressure and momentum equations, there is coupling between a heat transfer solid and an adjacent fluid domain, and there is coupling between displacements in a FSI run. These are all different examples of how two different equation sets are coupled together.
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Old   April 28, 2011, 21:09
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Thanks Glenn. This clears up my ambiguity.
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