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March 13, 2011, 06:26 |
Moving a wall with UDF
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#1 |
Member
anonymous
Join Date: Feb 2011
Posts: 50
Rep Power: 15 |
Can you please take a look at this????
I have a 2D channel that the upper wall has the equation of y=ax+b. I used a udf in order to move it along Y axis. However, when I preview my mesh it doesn't take into account the slope of the wall (a*x) : #include"udf.h" #include"mem.h" #include"dynamesh_tools.h" /* Constants */ #define b 10e-3 #define a 0.3e-3 /************************************************** ***/ DEFINE_GEOM(upper_wall_m,domain,dt,position) { Thread *tf = DT_THREAD (dt); face_t f; Node *node_p; real x, y; int n; SET_DEFORMING_THREAD_FLAG (THREAD_T0 (tf)); begin_f_loop (f, tf) { f_node_loop (f, tf, n) { node_p = F_NODE (f, tf, n); if (NODE_POS_NEED_UPDATE (node_p)) { NODE_POS_UPDATED (node_p); x = NODE_X (node_p); y=-a*(x)+b)+CURRENT_TIME; NODE_Y (node_p) = y; } } } end_f_loop (f, tf); } |
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