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kevin April 15, 2006 10:06

dynamic mesh problem,help!
hi all,i'm using a silding mesh for a interior and two interfaces attached to it. their velocity is given in DEFIN_CG_MOTION: vel[1] = u_t1; but they have different velocities each time step. the one command in just a time step Message ("disp = %le, cli = %le\n", u1, cli); actually puts : disp = 3.955120e-008, cli = -1.280314e-003 disp = 1.517457e-007, cli = -1.280314e-003 disp = 5.910051e-007, cli = -1.280314e-003

can anyone help me? thanx in advance sincerely.

kevin April 16, 2006 00:38

Re: dynamic mesh problem,help!
please help, i cannot figure out it for several days.

kevin April 16, 2006 00:44

Re: dynamic mesh problem,help!
i found that FLUENT accessed the micro DEFINE_CG_ MOTION for 3 times in a sigle tiem step, it's too strange i think.

mcsagesse March 4, 2014 06:49

define_cg motion
Hi all I am trying to write UDF for a flow over an oscillating flat plate. I have very very little knowledge of C++ so I am a novice, please I will need assistance from anybody that could help. After going through the Fluent Manual I believe I will need to write DEFINE CG_MOTION udf. Please I need your help. This is my personal email My major concern to write the udf for the plate oscillating along the y-axis



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