[atulsbhat]

This UDF didnt Get Any Error message but its not running, Can someone correct the UDF BELOW? {Suggest Changes Required}

Should I add anything Related To Enthalpy or Some UDM MACRO like C_UDMI(c,t,0) = cp

DEFINE_SPECIFIC_HEAT(cell_SpecificHeat, T, Tref, h, yi)

{

real T = C_T(c, t);

real cp;

if (500< T <550)

{

cp = (0.63464529*pow(T,2))-(356.13993666*T)+(61767.53243895);

}

else if (550< T <600.10)

{

cp = (0.23484528*pow(T,2))-(250.13953470*T)+(71466.09249852);

}

else if (600.10< T < 625.15)

{

cp = (1.58260392*pow(T,2))-(1873.17493506*T)+(560143.47661247);

}

else if (625.15< T <640)

{

cp = (16.13751699*pow(T,2))-(20137.03882161*T)+(6289718.12316515);

}

else

{

cp = 13000;

}

*h = cp*(T-Tref);

return cp;

}

Regards

[sufjanst]

Did you hook the UDF and set it up as your material properties?

[atulsbhat]

Originally Posted by sufjanst

Did you hook the UDF and set it up as your material properties?

Yes I Did That..
I am Not Sure Where to Set Tref For Cp in the Material Section
What Should be my Tref for The Above UDF?

[AlexanderZ]

COMPILE your code and READ error log file,
you've defined T twice

remove real T = C_T(c, t);

[atulsbhat]

I am Not Sure Where to Set Tref For Cp in the Materials Panel

Where Can I set Tref for UDF?
Should I Define it in My UDF ?

Like real Tref=600;

or its Not Possible to Alter it (by default its 298K) ?

In the Manual There is No Mention of how to add it..
{Only for multiphase there is an option because of latent heat}
What Is Tref, will it effect my Cp or its only for sensible enthalpy calculation??