udf编译求解

梅梅

#include "udf.h"

#define BMODULUS 2.2e9
#define rho_ref 1000.0
#define p_ref 101325

DEFINE_PROPERTY(superfluid_density, c, t)
{
    real rho;
    real p, dp;
    real p_operating;
   
    p_operating = RP_Get_Real ("operating-pressure");
   
    p = C_P(c,t) + p_operating;
    dp = p-p_ref;
    rho = rho_ref/(1.0-dp/BMODULUS);
    return rho;
}


DEFINE_PROPERTY(sound_speed, c,t)

{
    real a;
    real p, dp,p_operating;

    p_operating = RP_Get_Real ("operating-pressure");

    p = C_P(c,t) + p_operating;
    dp = p-p_ref;
    a = (1.-dp/BMODULUS)*sqrt(BMODULUS/rho_ref);   
    return a;
}
谁能帮我解释一下啊？初学者。定义的都是什么变量啊？

梅梅

谁能帮我解释一下 p_operating = RP_Get_Real ("operating-pressure");是什么意思，谢谢大家了

zhiyu001

看不懂，同为初学者