Sudden drop of Lift force during transient simulation -- CFD Online Discussion Forums

December 1, 2023, 01:43

Sudden drop of Lift force during transient simulation

otokemo

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Otari kemularia

Join Date: Mar 2018

Posts: 44

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I'm simulating a small wing (40mm chord), with Transition STT at hight angles of attack, and I'm getting some strange drop in lift (and rise in drag).

Time step is 0.005s.
Y+ is <1 everywhere.
Also, I'm new with low Re simulations, should I consider viscosity as a constant or should I use power law or sutherland?

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