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November 16, 2009, 06:09	Force by buoyancy	#1
champshof New Member Join Date: Nov 2009 Posts: 11 Rep Power: 16	Dear all, The difference in Buoyancy forces switched on or off have a major influence on the forces in my bouyancy direction of my model. For that reason I modelled a simple isothermal, single phase 2D cylinder flow, but still the buoyancy has a major influence. When switched off I get a drag force of -0.33N and when switched on I get a drag force of 0.70N. Epecially the negative drag force is very weird, anyone an explanation?

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