Ramp up rotating boundary condition -- CFD Online Discussion Forums

April 26, 2020, 04:28	Ramp up rotating boundary condition	#1
chandisasmal New Member Chandi Sasmal Join Date: Mar 2017 Posts: 6 Rep Power: 9	Hi All, I would like to simulate the flow past a rotating cylinder. Now at the surface of the cylinder, we can apply the rotatingWallVelocity boundary condition. However, I want to gradually ramp up the rotating velocity starting from 0 (stationary cylinder) and then with a step of 0.5 of up to 3 rad/s. Can you please let me know how I can set up a ramp-up rotating velocity boundary condition? Thanks for your help

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