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Low Lift Coefficient in ground simulations of 2D Airfoil (URGENT)
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Hi there, I am university student and in major need of help. I'm running 2d simulations on a 30P30N Airfoil which I've simulated in free flight and now I have run in ground simulations with a h/c of 1. My lift values for ground are lower than my free flight simulations for whatever reason and I cannot figure it out despite many changes. Can anyone assist? These are my results:
FREE FLIGHT Alfa CL - CD - CM 0 - 2.1414 0.050072 0.22063 4 - 2.6703 0.050454 0.09339 8 - 3.1056 0.064482 -0.03591 12 - 3.3856 0.093385 -0.16095 IN GROUND Alfa CL - CD - CM 0 - 2.0035 0.044599 0.20268 4 - 2.3253 0.036799 0.07713 8 - 2.6291 0.052558 -0.04001 12 - 2.8262 0.079061 -0.14552 I've attached some pictures of basic settings/reference values: Attachment 83729 Attachment 83730 Attachment 83731 I would really appreciate some urgent help as my degree depends on it. Thank you so much for your time. |
2 Attachment(s)
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How does your mesh settings look like?
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