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August 21, 2016, 01:10 |
Particle injection
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#1 |
Member
Davoud Malekian
Join Date: Jan 2016
Posts: 53
Rep Power: 10 |
Hello guys,
i have written a simple udf that injects particles by flow time ; the problem is when i start calculation nothing happens!!(and there is no particle injection!!) can anyone help me with this??? here is the udf: /* the case is 2D, transient, parallel processing, the mesh is tri, in dpm method i have click on particle unsteady tracking and for injection type i choose SURFACE INJECTION and i let the velocity & totall flow rate for particles be ZERO, cause i want particles to be moved by the flow and then i hook my simple udf*/ #include "udf.h" #include "dpm.h" DEFINE_DPM_INJECTION_INIT(resuspention_particles, I) { Thread *t; cell_t c; Particle *p; loop (p, I->p_init) { t = P_CELL_THREAD(p); c = P_CELL(p); if (CURRENT_TIME < 0.5) P_POS(p)[1] = -0.11; /*before time=0.5 particles should be injected at -11 centimeter by the velocity of zero and they should be moved by the flow, it is my injection method , i specify particle's position before 0.5s*/ else P_POS(p)[1] = -0.095; /* after 0.5s particle's should be injected at this position (9.5 centimeter)*/ } } /* and one other thing, i want to inject particles in a way that if i have 100 meshes on a surface so 100 particles should be injected*/ |
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injection, particle |
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