Fluent高手求教，UDF编写程序，提取一个流场出口个各个参数，然后加载在另一个流场作为入口条件

没必要用UDF的，按照下面的 *** 作即可：主要是一个写profile，再在新的case中读取，就ok

1Write a data profile at the outlet of the old case

In this step, you will write a file containing selected

ow solution information on

specied surfaces Later, you will use this information as inlet boundary conditions

when the boiling model is enabled

File>Write>Profile

(a) Select Define New Profile in the Options group box

(b) Select outlet from the Surfaces selection list

(c) Select Velocity Magnitude, Turbulence Kinetic Energy (k), and Turbulent Dissipation

Rate (Epsilon) and so on from the Values selection list

(d) Click Write to open the Select File panel

(e) Enter liquid-outletprof for File Name and click OK

This writes a profile file to the working folder The profile file contains the solution

information that was requested in the Write Profile panel This information

is used to supply inlet information in the boiling calculation

(f) Close the Write Profile panel

2For a new case, Read the newly created profile into memory

After creating a profile, you need to read it into memory for the profile variables to be

available as boundary conditions

File>Read >Profile

FLUENT displays the progress of reading the profile, in the console

高手帮我也看一下，我抄的教程上的程序，编译也出现语法错误，求指教！

#include "udfh"

static real viscosity_0;

DEFINE_INIT(melt_setup, domain)

{

/ if memory for the particle variable titles has not been

allocated yet, do it now /

if (NULLP(user_particle_vars)) Init_User_Particle_Vars();

/ now set the name and label /

strcpy(user_particle_vars[0]name,"melting-index");

strcpy(user_particle_vars[0]label,"Melting Index");

}

/ update the user scalar variables /

DEFINE_DPM_SCALAR_UPDATE(melting_index, cell, thread, initialize, p)

{

cphase_state_t c = &(p->cphase);

if (initialize)

{

/ this is the initialization call, set:

p->user[0] contains the melting index, initialize to 0

viscosity_0 contains the viscosity at the start of a time step/

p->user[0] = 0;

viscosity_0 = c->mu;

}

else

{

/ use a trapezoidal rule to integrate the melting index /

p->user[0] += P_DT(p) 5 (1/viscosity_0 + 1/c->mu);

/ save current fluid viscosity for start of next step /

viscosity_0 = c->mu;

}

}

/ write melting index when sorting particles at surfaces /

DEFINE_DPM_OUTPUT(melting_output, header, fp, p, thread, plane)

{

char name[100];

if (header)

{

if (NNULLP(thread))

cxprintf(fp,"(%s %d)\n",thread->head->dpm_summarysort_file_name,11);

else

cxprintf(fp,"(%s %d)\n",plane->sort_file_name,11);

cxprintf(fp,"(%10s %10s %10s %10s %10s %10s %10s"

" %10s %10s %10s %10s %s)\n",

"X","Y","Z","U","V","W","diameter","T","mass-flow",

"time","melt-index","name");

}

else

{

sprintf(name,"%s:%d",p->injection->name,p->part_id);

cxprintf(fp,

"((%106g %106g %106g %106g %106g %106g "

"%106g %106g %106g %106g %106g) %s)\n",

p->statepos[0], p->statepos[1], p->statepos[2],

p->stateV[0], p->stateV[1], p->stateV[2],

p->statediam, p->statetemp, p->flow_rate, p->statetime,

p->user[0], name);

}

}

begin_f_loop(f, thread) ， end_f_loop(f, thread)是一个循环语句

F_PROFILE(f, thread, position)=。。。。。相应公式的值，并返回给你要定的温度或者压力

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