Creating a 3D parabolic velocity UDF on a circular inlet -- CFD Online Discussion Forums

May 12, 2017, 09:45	Creating a 3D parabolic velocity UDF on a circular inlet	#1
hardeaut New Member Join Date: Mar 2017 Posts: 2 Rep Power: 0	I'm trying to make a UDF that will produce a parabolic velocity for the inlet (so higher speed in the centre, low on the outside). It is on the xy plane, with velocity going in the z direction. I have the formula for the parabola and width of the inlet, but I haven't a clue on where to go from there. I've look at the Fluent manual, but that did not explain to me what I had to do to make a 3D profile, let alone a normal one. The radius is 0.0135m, with the formula being z=0.275-27714y^2. Last edited by hardeaut; May 15, 2017 at 06:13. Reason: Correcting numbers.

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