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дÁËÒ»¸öÒ·Á¦µÄUDF£¬µ«ÊÇ¿ªÊ¼¼ÆËã¾Í·¢ÏÖÎÊÌâÁË¡£ ͬÑùµÄÄ£ÐÍ£¬¼ÓÈëÁËUDF£¨wen yuÒ·Á¦ÏµÊý£©Ö®ºó¼ÆËã³ö´í¡£ÀûÓÃ×Ô´øµÄ¼ÆËã¾ÍûÓÐÎÊÌâ # Divergence detected in AMG solver: mp-x-momentum -> Decreasing coarsening group size! # Divergence detected in AMG solver: mp-x-momentum -> Increasing relaxation sweeps! # Divergence detected in AMG solver: pressure correction -> Turning off correction scaling! # Divergence detected in AMG solver: pressure correction -> Increasing relaxation sweeps! udf ÈçÏ£º #include "udf.h" #define diam2 9.e-2 DEFINE_EXCHANGE_PROPERTY(LS_drag, cell, mix_thread, s_col, l_col) { Thread *thread_l, *thread_s; thread_l = THREAD_SUB_THREAD(mix_thread, l_col); thread_s = THREAD_SUB_THREAD(mix_thread, s_col); real abs_v, slip_x, slip_y, slip_z; real rho_l, mu_l, reyp, void_s, void_l, f_drag, k_l_s; slip_x = C_U(cell, thread_l) - C_U(cell, thread_s); slip_y = C_V(cell, thread_l) - C_V(cell, thread_s); slip_z = C_W(cell, thread_l) - C_W(cell, thread_s); rho_l = C_R(cell, thread_l); mu_l = C_MU_L(cell, thread_l); void_s = C_VOF(cell, thread_s); void_l = C_VOF(cell, thread_l); abs_v = sqrt(slip_x*slip_x + slip_y*slip_y + slip_z*slip_z); reyp = rho_l*abs_v*diam2/mu_l; f_drag = (reyp <= 1000) ? (24.0*(1.0 + 0.15*pow(reyp, 0.687))/reyp) :0.44; k_l_s = 0.75*rho_l*void_s*f_drag*abs_v/diam2; return k_l_s; } ÆäÖл»ËãÁ˵¥Î»£¬ËùÒÔ¿ÅÁ£µÄÖ±¾¶µ¥Î»ÊÇmm¡£ |
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