Size of Time-Step during Adaptive Time-Marching

cwl6750084

Does anyone know if we can record and export the size of time-step for each time-step if we use adaptive time-marching? I am running a simulations with over 250000 and cannot write and open the output files one-by-one.

Thanks.

sdeb

Hello,

If I understand correctly, you can use a DEFINE_EXECUTE_AT_END UDF to write out the current time step size.

Inside the UDF, you can use the macro CURRENT_TIMESTEP (or PREVIOUS_TIMESTEP) and then write it to an external file.

You will find more information in the link below

https://ansyshelp.ansys.com/account/secured?returnurl=/Views/Secured/corp/v202/en/flu_udf/flu_udf_RPVariables.html?q=CURRENT_TIMESTEP

Regards,

Surya

cwl6750084

Is using UDF the only way of doing so? I am not sure if there is a C++ compiler on the office computer (it is a window machine).

Rob

If you're using 2020R2 click on the "Use included compiler" as we've (finally) added one to Fluent. The other option is to write a monitor of "something" and check what can be included in that, I know flow time can be, not sure about time step. Then use Excel to find the dt.