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Fenker

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[求助] fluent中udf编译问题

大佬知道这个udf导入fluent出现这个错误是怎么回事吗?有大佬指点一下吗,不胜感激
#include "udf.h"

DEFINE_MASS_TRANSFER(LCO2_DCO2,c, mixture_thread, from_phase_index, from_species_index, to_phase_index, to_species_index)
{
        real CS = 3.5E-2 ;//CO2 solubility CO2of seawater (mole factor)
        real Mb = 2.3E-2 ;//molar mass of brine
        real Mco2 = 4.401E-2 ;// molar mass of CO2
        real MS =  Mb*(1-CS)+Mco2*CS;//混合物的摩尔质量
        Thread *pri_th =  THREAD_SUB_THREAD(mixture_thread,to_phase_index);
        real d_s = C_R(c,pri_th);
        real x[ND_ND];
        C_CENTROID(x,c,mixture_thread);
        real x_vel;
        real u;
        real KM;
        real F;
        real r;
        x_vel =  C_U(c,mixture_thread);
        u= 4E-1 * fabs(x_vel)/(log(fabs(x[1] * 0.5)+0.05)/0.05);
        KM = u * 9.8E-4;
        F = C_YI(c,pri_th,to_species_index);
       
        if(F_co2<=0.0356)
        {
                r = d_s*KM*CS/(MS*(1-CS));
        }
        else
        {
                r=0.;
        }
        return r;       
}



Error: C:/Users/user/AppData/Local/Temp/mass_1.c.8452.0.c: line 13: parse error.
Error: C:/Users/user/AppData/Local/Temp/mass_1.c.8452.0.c: line 14: parse error.
Error: C:/Users/user/AppData/Local/Temp/mass_1.c.8452.0.c: line 15: parse error.
Error: C:/Users/user/AppData/Local/Temp/mass_1.c.8452.0.c: line 16: parse error.
Error: C:/Users/user/AppData/Local/Temp/mass_1.c.8452.0.c: line 17: parse error.
Error: C:/Users/user/AppData/Local/Temp/mass_1.c.8452.0.c: line 18: x_vel: undeclared variable
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