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UDF for hear transfer coefficient in non-thermal equilibrium porous meda

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Old   February 24, 2014, 20:44
Default UDF for hear transfer coefficient in non-thermal equilibrium porous meda
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Sherif
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Hello,
I am trying to make a udf for the solid-liquid heat transfer coefficient for the thermal non-equilibrium model for porous media.
The heat transfer coefficient is a function of the temperature of the solid and liquid zones as well as the thermal conductivity of the fluid. I am wondering how I can call the temperature variables in both zones? as well as how can I use the thermal conductivity property of the fluid as a variable in the UDF.
Thanks
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Old   July 24, 2014, 19:23
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Hello. Did you solve your problem and write a udf for heat transfer coeff.?

Thank you.
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Old   January 15, 2015, 05:27
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Anonymous Joe
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i have the same problem, i want to get the temperature of the solid in the porous zone.
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Old   January 15, 2015, 12:04
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After creating the solid domain, get the domain ID (cell condition tab).
In the UDF, write something similar to:

int Zone_ID_solid = 9; /* solid zone ID*/
Domain *d = Get_Domain(1);
cell_t c;
Thread *thread_solid = Lookup_Thread(d,Zone_ID_solid);

begin_c_loop(c,thread_solid)
{
T_solid = C_T(c,thread_solid);
}
end_c_loop(c,thread_solid)

This will read the temperature in the cells of the zone specified. I think this would work, but I haven't check it.
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Old   June 29, 2015, 05:41
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Hello. I want to impose an equal temperature and flux condition at the interface between the porous zone and fluid zone in thermal non-equilibrium model through the equation K_se*dT_s/dr = K_fe*dT_f/dr = K_f*dT_f/dr = q_interface and T_s = T_f at the interface (where, K_se & K_fe are effective solid and fluid conductivity, q is the heat flux).I don't know how to write udf for this as I am not good in udf. I will be thankful for any suggestion about what macros should I use and how to implement.
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Old   May 17, 2016, 09:19
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Quote:
Originally Posted by sheeko View Post
Hello,
I am trying to make a udf for the solid-liquid heat transfer coefficient for the thermal non-equilibrium model for porous media.
The heat transfer coefficient is a function of the temperature of the solid and liquid zones as well as the thermal conductivity of the fluid. I am wondering how I can call the temperature variables in both zones? as well as how can I use the thermal conductivity property of the fluid as a variable in the UDF.
Thanks
Hello, did you make the UDF for the heat transfer coefficient?

Thanks
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Old   May 24, 2016, 06:50
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Quote:
Originally Posted by woody85 View Post
i have the same problem, i want to get the temperature of the solid in the porous zone.
Dear woody85,

Did you manage to obtain the solid temperature in the porous domain?
If yes, how did you do it?

Thank you, G

Last edited by guilbemloco; May 24, 2016 at 09:23.
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Old   November 16, 2016, 13:38
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Hi every body
I Have the same problem. I want to consider heat transfer coeff. as a function of reynolds number. How can I do this?
Please help me
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Old   January 2, 2020, 00:43
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Uday Kumar
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Quote:
Originally Posted by parvaz747 View Post
Hi every body
I Have the same problem. I want to consider heat transfer coeff. as a function of reynolds number. How can I do this?
Please help me
did you solve this? I am doing the same type of problem. in which heat transfer coefficient need to give in terms of reynolds number. Could you please help me out?
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