[gtamogh]

Hi i am new to UDF writing

My problem is to increase the temperature of the solid volume (2d) at certain flow time, say around 4 second and should reach with maximum unknown temperature for this flow time.

Once flow time, say 4 second is reached the temperature is been reported at monitor plot and Heat generation should stop

(after this 4 second the cooling water would take out the heat generated in the solid volume)


kinetic equation is

Tfo = Tfi + [Tro − Tfi] (1-exp(-UA/mCp))

Tfi=298k is inlet of cooling fluid
Tfo= in unknown (final water temp)
U is energy, mcp are the rest of the properties

i have tried some c-code but no luck.. kindly help

[EternalEnvy]

Use RP_Get_Real("flow-time") to get the real flow time. As for the temperature, if you need to set the temperature of the boundary, just write a DEFINE_PROPERTY macro to adapt the temperature to the time.

[AlexanderZ]

take a look into Ansys Customization Manual

find there DEFINE_PROFILE not DEFINE_PROPERTY macros.
about time, it is better to use build-in macros CURRENT_TIME.

time = CURRENT_TIME;

best regards

[gtamogh]

I will try to write code thanks for the help