Something about perturbU -- CFD Online Discussion Forums

October 16, 2014, 01:13	Something about perturbU	#1
tzqfly Member Jason Tan Join Date: Sep 2014 Posts: 47 Rep Power: 11	Hi, everyone When I do the channel flow, I want to use the perturbU utility to initialization the velocity, but after I used it, the velocity of y direction was 0 (the boundary condition of y direction is wall, the other four is cyclic ),while the other four boundaries changed. I mean the initialized U file is not the same as 0/U file of channelFoam, in the channelFoam, the coordinates of whole direction are changed. Could someone help me?

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