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flow simulation configurations

Question asked by Val Popescu on Jan 2, 2019

I I added to the wing itself a geometry representing the ground. The wing is 4" above the ground.  After running the simulation the GG-Y is almost zero but I created a SG-Y for the ground which in fact posts a credible value. I can only assume the ground positive Y force is subtracted from the wing above negative Y force. Is there a way to eliminate this and get GG-Y to report