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buwangchuxin新蟲 (小有名氣)
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[求助]
symmetry與axis情況下的udf編寫是否相同
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之前我使用symmetry做過二維對稱條件下的udf質(zhì)量源項的添加,現(xiàn)在改為2維的axis情況下來添加,貌似有些不同。不知道這兩種情況下是一樣的嗎????現(xiàn)在我把udf附加上:#include"udf.h" #include"mem.h" #define D 1.82e-5 #define v1 360 #define r 1.0 DEFINE_ADJUST(adsorption_adjust, domain) { cell_t c0; Thread* t0; Thread* wall_thread; face_t wall =6; real A[ND_ND] ; real x[ND_ND] ; real At; real J,C; wall_thread= Lookup_Thread(domain,wall); begin_f_loop (wall, wall_thread) { c0 = F_C0(wall,wall_thread); t0 = F_C0_THREAD(wall,wall_thread); C_CENTROID(x,c0,t0); C=C_YI(c0,t0,0)*1000; J=(-r*v1/4)/(1+r*v1/4*x[1]/D)*C; F_AREA(A,wall, wall_thread); At = NV_MAG(A); C_UDMI(c0, t0, 0) = J*At/C_VOLUME(c0,t0); } end_f_loop (wall,wall_thread) } DEFINE_SOURCE(mass_source,c,t,dS,eqn) { real source ; source= C_UDMI(c,t,0) ; dS[eqn]=0 ; return source; } |
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