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March 28, 2015, 21:54 |
udf unsteady flow.
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#1 |
New Member
elliot ward
Join Date: Mar 2015
Posts: 10
Rep Power: 11 |
Hi all first time poster here so i'l keep it short and sweet.
Im trying to write a udf for a unsteady flow that varies with time step on a pipe in 2d, (I am having great difficulty). I have written a udf (below), however when I run it in fluent it only runs the last velocity and misses out the rest. Can anyone spot my mistake/s? Any help would be much appreciated. #include "udf.h" DEFINE_PROFILE(inlet_x_velocity, thread, position) { real x[ND_ND]; real y; real t = RP_Get_Real("physical-time-step"); face_t f; begin_f_loop(f, thread) {if (t<=10); F_CENTROID(x,f,thread); y = x[1]; F_PROFILE(f, thread, position) = 1; } {if (t<=11 && t>10); F_CENTROID(x,f,thread); y = x[1]; F_PROFILE(f, thread, position) = 0.5; } {if (t<=12 && t>11); F_CENTROID(x,f,thread); y = x[1]; F_PROFILE(f, thread, position) = 3; } {if (t<=13 && t>12); F_CENTROID(x,f,thread); y = x[1]; if (y<=7) F_PROFILE(f, thread, position) = 9; } if (t<=14 && t>13); { F_CENTROID(x,f,thread); y = x[1]; F_PROFILE(f, thread, position) = 5; } end_f_loop(f, thread) } Last edited by elliot; March 28, 2015 at 22:03. Reason: needs to be in udf & scheming |
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