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Ìú¸Ëľ³æ (ÎÄ̳¾«Ó¢)

[ÇóÖú] fluent UDFÈçºÎʵÏÖ˲̬£¬±ÚÃæheat fluxΪ ÉÏһʱ¿ÌζÈÓë´ËʱζȲîµÄº¯ÊýµÄ£¿

±ÚÃæÈÈÁ÷±ß½çÂú×㹫ʽheat flux=C_all*Density_all*t_all*(T1-T0))/delta_t£»ÆäÖÐ
C_allΪ×ܵÄÈÈÈÝ£»
Density_allΪ×ܵÄÃܶȣ»
t_allΪ×ܵĺñ¶È£»
T1Ϊǰһʱ¿ÌµÄ±ÚÃæÎ¶ȣ»
T0Ϊ´ËʱµÄ±ÚÃæÎ¶ȣ»
delta_tΪÁ½Î¶Èʱ¼äµÄ²îÖµ£»
±ÚÃæ±ß½ç´¦£¬²ÄÁÏ»áËæ×ÅζȵÄÉý¸ß¶øÎüÊÕÒ»²¿·ÖÈÈÁ¿£¬¶øÕⲿ·Ö´«ÈÈÒÔheat fluxÐÎʽ±íʾ£¬fluentÖÐheat fluxµÄµ¥Î»ÎªW/m2£¬
Òò´Ë¾Í¼ò»¯Á˹«Ê½Q=C*m*(T1-T2)£¬m=density*Volume½üËÆµÈÓÚ£ºÃܶÈ*ºñ¶È*Ãæ»ý£¬Õⲿ·ÖÈÈÁ¿²»ÊÇËæ×Åʱ¼ä±ä»¯µÄ£¬¶øÊÇËæ×Åζȱ仯µÄ£¬
fluentÖеĵ¥Î»ÎªW/m2£¬ÔÚ¼ÆËãÈÈÁ¿ ʱ»á³ËÒÔʱ¼ä£¬Òò´ËÔÚUDFÖгýÁËʱ¼ä¡£

///////////////////////////////////////////////////////////////////////////////
ÏÂÃæÊÇÎÒ×Ô¼ºÐ´µÃUDF,µ«Êdzõʼ»¯µÄʱºòÓÐÈçÏÂÌáʾµÄ´íÎó£º
Error:
FLUENT received fatal signal (ACCESS_VIOLATION)
1. Note exact events leading to error.
2. Save case/data under new name.
3. Exit program and restart to continue.
4. Report error to your distributor.
Error Object: #f
///////////////////////////////////////////////////////////////////////////////

#include "udf.h"
/*5-the wall heat flux*/
/*-----------------------------------------------------------------------*/
DEFINE_PROFILE(wall_heat_flux, thread, position)
{
/*--------------±ÚÃæ²ÄÁÏ´¢ÈȲ¿·Ö--------------------*/
real Density_Al=2700;      /*ÂÁµÄÃܶÈ*/
real Density_CRFP=1570;    /*CRFPµÄÃܶÈ*/
real C_Al=902;             /*ÂÁµÄÈÈÈÝ*/
real C_CRFP=840;           /*CRFPµÄÈÈÈÝ*/
real t_Al=0.0048;          /*ÂÁµÄºñ¶È*/
real t_CRFP=0.0025;        /*CRFPµÄºñ¶È*/
real w1,w2;                /*w1ΪÂÁµÄÖÊÁ¿·ÖÊý£¬w2ΪCRFPµÄÖÊÁ¿·ÖÊý*/
real Density_all,C_all;    /*±ÚÃæ²ÄÁÏ×ܵÄÃܶȣ¬ÈÈÈÝ*/
real heat_flux;          /*±ÚÃæ²ÄÁÏ´¢ÈȲ¿·Ö½üËÆÈÈÁ÷Á¿*/
real current_time step;    /*ʱ¼ä²½³¤*/

real t;
cell_t c;
Thread *t;
face_t f;
begin_f_loop(f,thread)
{
t_wall=F_T(f,thread);
heat_flux_1=(1/(1/h_hydrogen+thickness_all/k_wall+1/h_air))*(t_air-t_wall);  /*¶ÔÁ÷½»»»µ¥Î»Ãæ»ýÇâÆøÈÈÁ÷ÃܶÈ*/
w1=Density_Al*t_Al/(Density_Al*t_Al+Density_CRFP*t_CRFP);
w2=Density_CRFP*t_CRFP/(Density_Al*t_Al+Density_CRFP*t_CRFP);
Density_all=1/(w1/Density_Al+w2/Density_CRFP);
C_all=C_Al*w1+C_CRFP*w2;

current_timestep = RP_Get_Real("physical-time-step";
C_UDMI(c,t,0) = C_T_M1(c,t); /*»ñµÃǰһʱ¿ÌζÈÖµ*/
C_UDMI(c,t,1)= C_T_M2(c,t);/*»ñµÃǰǰʱ¿ÌζÈÖµ*/

heat_flux=C_all*Density_all*(t_Al+t_CRFP)*(C_UDMI(c,t,0) - C_UDMI(c,t,1))/current_timestep;

F_PROFILE(f,thread,position)=heat_flux;

}
end_f_loop(f,thread)
}
»Ø¸´´ËÂ¥
You will when you believe.
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

ykxyer

Ìú¸Ëľ³æ (ÎÄ̳¾«Ó¢)

ÒýÓûØÌû:
2Â¥: Originally posted by MrKin at 2017-07-04 10:06:22
udm²»ÄÜÏà¼Ó¼õ£¬¼ÈÈ»ÏÂÃæÒѾ­Óõ½ÁËc-t-m£¬ÓֺαذÑËü´æÔÚudmÖÐ

Ö±½Ó¾ÍÊÇ£ºheat_flux=C_all*Density_all*(t_Al+t_CRFP)*(C_T_M1(c,t) - C_T_M2(c,t))/current_timestep Â𣿠ɾµôÕâÁ½ÐУºC_UDMI(c,t,0) = C_T_M1(c,t); /*»ñµÃǰһʱ¿ÌζÈÖµ*/
C_UDMI(c,t,1)= C_T_M2(c,t);/*»ñµÃǰǰʱ¿ÌζÈÖµ*/£¿£¿£¿
You will when you believe.
3Â¥2017-07-04 10:16:11
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
²é¿´È«²¿ 10 ¸ö»Ø´ð

MrKin

гæ (ÕýʽдÊÖ)

udm²»ÄÜÏà¼Ó¼õ£¬¼ÈÈ»ÏÂÃæÒѾ­Óõ½ÁËc-t-m£¬ÓֺαذÑËü´æÔÚudmÖÐ

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2Â¥2017-07-04 10:06:22
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

MrKin

гæ (ÕýʽдÊÖ)

¿´ÉÏȥûÎÊÌ⣬ÄãÐèÒª¼ÓÔØ½øÈ¥¿´¿´ÓÐûÓÐÆäËû±¨´í

·¢×ÔСľ³æIOS¿Í»§¶Ë
4Â¥2017-07-04 10:37:44
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

ykxyer

Ìú¸Ëľ³æ (ÎÄ̳¾«Ó¢)

ÒýÓûØÌû:
4Â¥: Originally posted by MrKin at 2017-07-04 10:37:44
¿´ÉÏȥûÎÊÌ⣬ÄãÐèÒª¼ÓÔØ½øÈ¥¿´¿´ÓÐûÓÐÆäËû±¨´í

ÎÒÏÖÔڰѳÌÐò¸Ä³ÉÏÂÃæµÄÁË£¬µ«ÊÇ»¹ÊÇÓб¨´í£ºError: Update_Time_Level: invalid data£¬°Ù¶ÈÁËһϣ¬Ò²Ã»ÕÒµ½ÀàËÆ´íÎóµÄÊÇɶԭÒò£¿

#include "udf.h"
/*5-the wall heat flux*/
/*-----------------------------------------------------------------------*/
DEFINE_PROFILE(wall_heat_flux, thread, position)
{
/*--------------±ÚÃæ²ÄÁÏ´¢ÈȲ¿·Ö--------------------*/
real Density_Al=2700;      /*ÂÁµÄÃܶÈ*/
real Density_CRFP=1570;    /*CRFPµÄÃܶÈ*/
real C_Al=902;             /*ÂÁµÄÈÈÈÝ*/
real C_CRFP=840;           /*CRFPµÄÈÈÈÝ*/
real t_Al=0.0048;          /*ÂÁµÄºñ¶È*/
real t_CRFP=0.0025;        /*CRFPµÄºñ¶È*/
real w1,w2;                /*w1ΪÂÁµÄÖÊÁ¿·ÖÊý£¬w2ΪCRFPµÄÖÊÁ¿·ÖÊý*/
real Density_all,C_all;    /*±ÚÃæ²ÄÁÏ×ܵÄÃܶȣ¬ÈÈÈÝ*/
real heat_flux;          /*±ÚÃæ²ÄÁÏ´¢ÈȲ¿·Ö½üËÆÈÈÁ÷Á¿*/
real current_time step;    /*ʱ¼ä²½³¤*/

real t;
cell_t c;
Thread *t;
face_t f;
begin_f_loop(f,thread)
{
w1=Density_Al*t_Al/(Density_Al*t_Al+Density_CRFP*t_CRFP);
w2=Density_CRFP*t_CRFP/(Density_Al*t_Al+Density_CRFP*t_CRFP);
Density_all=1/(w1/Density_Al+w2/Density_CRFP);
C_all=C_Al*w1+C_CRFP*w2;

current_timestep = RP_Get_Real("physical-time-step";


heat_flux=C_all*Density_all*(t_Al+t_CRFP)*(C_T_M1(c,t) - C_T_M2(c,t))/current_timestep;

F_PROFILE(f,thread,position)=heat_flux;

}
end_f_loop(f,thread)
}
You will when you believe.
5Â¥2017-07-04 10:42:39
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
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