求助UDF并行计算的问题
-
各位大佬，求帮忙看一下计算出错的原因。
我模拟一个结晶的过程，在PBE模型中挂上成核与生长的UDF时，计算一开始就出现了报错，不挂UDF就可以正常计算下去。报错时控制台的提示信息如下：Initialize using the hybrid initialization method. Checking case topology... -This case has both inlets & outlets -Pressure information is not available at the boundaries. Case will be initialized with constant pressure iter scalar-0 1 1.000000e+00 2 1.145484e-05 3 8.608675e-07 4 2.028824e-07 5 2.753174e-08 6 5.988739e-09 7 9.756630e-10 8 2.840014e-10 9 5.402100e-11 10 1.498808e-11 Hybrid initialization is done. Creating new file G:\.\mass_frac_z=0-rfile_1_1.out Creating new file G:\.\mass_frac_z=-40-rfile_1_1.out Creating new file G:\.\mass_frac_z=5-rfile_1_1.out iter continuity u-solution u-crystal v-solution v-crystal w-solution w-crystal energy-p1 energy-p2 k epsilon paracetamo water-solu bf-0-cryst bf-1-cryst bf-2-cryst bf-3-cryst bf-4-cryst bf-5-cryst bf-6-cryst bf-7-cryst bf-8-cryst bf-9-cryst bf-10-crys bf-11-crys bf-12-crys bf-13-crys bf-14-crys vf-crystal time/iter temperature limited to 1.000000e+00 in 1345882 cells on zone 8407 in domain 2 1 1.0000e+00 6.0854e-04 0.0000e+00 6.0847e-04 0.0000e+00 9.3036e-04 0.0000e+00 8.2651e-03 0.0000e+00 7.5450e-02 1.6778e-01 1.7762e+00 1.6993e+00 0.0000e+00 0.0000e+00 0.0000e+00 0.0000e+00 0.0000e+00 0.0000e+00 0.0000e+00 0.0000e+00 0.0000e+00 0.0000e+00 0.0000e+00 0.0000e+00 0.0000e+00 0.0000e+00 0.0000e+00 0.0000e+00 0:00:31 1 Error at Node 0: floating point exception Error at Node 1: floating point exception Error at Node 2: floating point exception Error at Node 3: floating point exception Error at Node 4: floating point exception Error at Node 5: floating point exception Error at Node 6: floating point exception Error at Node 7: floating point exception Error at Node 8: floating point exception Error at Node 9: floating point exception Error at Node 10: floating point exception Error at Node 11: floating point exception Error at Error at Node 13: floating point exception Error at Node 15: floating point exception N Error at Node 14: floating point exception ode 12: floating point exception Experiencing convergence difficulties - temporarily relaxing and trying again... Experiencing convergence difficulties - temporarily relaxing and trying again... Experiencing convergence difficulties - temporarily relaxing and trying again... Experiencing convergence difficulties - temporarily relaxing and trying again... Stabilizing pressure coupled to enhance linear solver robustness. Stabilizing pressure coupled using GMRES to enhance linear solver robustness. Experiencing convergence difficulties - temporarily relaxing and trying again... Divergence detected in AMG solver: pressure coupled Stabilizing solution-species-0 to enhance linear solver robustness. Stabilizing solution-species-0 using GMRES to enhance linear solver robustness. Divergence detected in AMG solver: solution-species-0 Stabilizing solution-species-1 to enhance linear solver robustness. Stabilizing solution-species-1 using GMRES to enhance linear solver robustness. Divergence detected in AMG solver: solution-species-1 temperature limited to 1.000000e+00 in 273407 cells on zone 8407 in domain 2 Stabilizing vof-1 to enhance linear solver robustness. Stabilizing vof-1 using GMRES to enhance linear solver robustness. Divergence detected in AMG solver: vof-1 Divergence detected in AMG solver: pressure coupled Divergence detected in AMG solver: solution-species-0 Divergence detected in AMG solver: solution-species-1 Divergence detected in AMG solver: vof-1 Divergence detected in AMG solver: pressure coupled Divergence detected in AMG solver: solution-species-0 Divergence detected in AMG solver: solution-species-1 Divergence detected in AMG solver: vof-1 Divergence detected in AMG solver: pressure coupled Divergence detected in AMG solver: solution-species-0 Divergence detected in AMG solver: solution-species-1 Divergence detected in AMG solver: vof-1 Divergence detected in AMG solver: pressure coupled Divergence detected in AMG solver: solution-species-0 Divergence detected in AMG solver: solution-species-1 Divergence detected in AMG solver: vof-1 Divergence detected in AMG solver: pressure coupled Divergence detected in AMG solver: solution-species-0 Divergence detected in AMG solver: solution-species-1 Divergence detected in AMG solver: vof-1 Divergence detected in AMG solver: pressure coupled Divergence detected in AMG solver: solution-species-0 Divergence detected in AMG solver: solution-species-1 Divergence detected in AMG solver: vof-1 Divergence detected in AMG solver: pressure coupled Divergence detected in AMG solver: solution-species-0 Divergence detected in AMG solver: solution-species-1 Divergence detected in AMG solver: vof-1 Divergence detected in AMG solver: pressure coupled Divergence detected in AMG solver: solution-species-0 Divergence detected in AMG solver: solution-species-1 Divergence detected in AMG solver: vof-1 Divergence detected in AMG solver: pressure coupled Divergence detected in AMG solver: solution-species-0 Divergence detected in AMG solver: solution-species-1 Divergence detected in AMG solver: vof-1 Divergence detected in AMG solver: pressure coupled Divergence detected in AMG solver: solution-species-0 Divergence detected in AMG solver: solution-species-1 Divergence detected in AMG solver: vof-1 Divergence detected in AMG solver: pressure coupled Divergence detected in AMG solver: solution-species-0 Divergence detected in AMG solver: solution-species-1 Divergence detected in AMG solver: vof-1 Divergence detected in AMG solver: pressure coupled Divergence detected in AMG solver: solution-species-0 Divergence detected in AMG solver: solution-species-1 Divergence detected in AMG solver: vof-1 Divergence detected in AMG solver: pressure coupled Divergence detected in AMG solver: solution-species-0 Divergence detected in AMG solver: solution-species-1 Divergence detected in AMG solver: vof-1 Divergence detected in AMG solver: pressure coupled Divergence detected in AMG solver: solution-species-0 Divergence detected in AMG solver: solution-species-1 Divergence detected in AMG solver: vof-1 Divergence detected in AMG solver: pressure coupled Divergence detected in AMG solver: solution-species-0 Divergence detected in AMG solver: solution-species-1 Divergence detected in AMG solver: vof-1 Error at host: floating point exception Error: floating point exception Error Object: #f应该是UDF的问题，但不知道具体是什么问题。生长速率udf代码如下：
#include "sg_mphase.h" DEFINE_PB_GROWTH_RATE(growth_rate,cell,thread,d_1) { real G;/* growth rate in m/s*/ real Kg = 1.280e-5; /* growth rate constant */ real g = 1.947;/* primary nucleation law power index */ real x;/* the antisolvent proportion in kg-antisolvent/kg-antisolvent and solvent */ real y;/* the solubility in kg-solute/kg-antisolvent and solvent */ real C;/* the solute concentration in kg-solute/kg-solvent */ real Solubility;/* the solubility in kg-solute/kg-solvent */ real delta_C;/* the difference between the solute concentration and the solubility, kg-solute/kg-solvent */ real solute_mass_frac,solvent_mass_frac,antisolvent_mass_frac; Thread *tc = THREAD_SUPER_THREAD(thread); /* obtain mixture thread */ Thread **pt = THREAD_SUB_THREADS(tc); /* pointer to sub_threads */ Thread *tp = pt[P_PHASE]; /* primary phase thread */ solute_mass_frac = C_YI(cell,tp,0);/* mass fraction of solute in primary phase (solvent,antisolvent,Paracetamol) */ solvent_mass_frac = C_YI(cell,tp,2);/* mass fraction of solvent in primary phase (solvent,antisolvent,Paracetamol ) */ antisolvent_mass_frac = 1.-solute_mass_frac-solvent_mass_frac;/* mass fraction of antisolvent in primary phase (solvent,antisolvent,Paracetamol) */ x = antisolvent_mass_frac/(antisolvent_mass_frac+solvent_mass_frac);/* the antisolvent proportion in kg-antisolvent/kg-antisolvent and solvent */ y = -2.63748*pow(x,4)+9.04654*pow(x,3)-10.86277*pow(x,2)+5.04399*x-0.57920;/* the solubility in kg-solute/kg-antisolvent and solvent */ Solubility = y*(1.+(antisolvent_mass_frac /solvent_mass_frac));/* the solubility in kg-solute/kg-solvent */ C = solute_mass_frac/solvent_mass_frac;/* the solute concentration in kg-solute/kg-solvent */ delta_C = C-Solubility; /* Definition of Supersaturation */ if (delta_C == 0.) { G = 0.; } else { G = Kg*pow(delta_C,g); } return G; }
-
你的是并行计算挂载有问题，串行计算没有问题吗？
-
看提示信息说的是浮点数溢出，没遇到过这种错误，期待UDF大佬现身说法
-
你检查一下UDF里的参数
-
@关伯兰在笑 逐行排查吧，所有分母都添加一个很小的量。
CFD中文网 2016 - 2020 | 京ICP备15017992号-2