code_saturne User's Forum

Dear experts,

I am running an LES simulation using version 6.0.8. I want to store the minimum and the maximum temperatures at each location.
Are there any suggestions to do that? Can I set up new variables such as minT and maxT in cs_user_parameters.c, then store minT and maxT for each location?

Best regards,
Xiaoxue

Hello,

minT and maxY would not be "standard" user variables, as they are defined globally and not on a single cell.
Max and min values are already computed for logging, using functions from cs_array_reduce.c (or cs_array_reduce.h), but if you want to store them, you need to call the same functions from the cs_user_extra_operations function and save them to a a file. Check fo the following: https://www.code-saturne.org/documentat ... ce_8h.html, https://www.code-saturne.org/documentat ... cd94f489b7.

Best regards,

Yvan

Dear Yvan,

Thanks for the information.

I am trying to use cs_array_reduce_minmax_l, I am calling it in cs_user_extra_operations as attached.
The output seems to be at just one cell.

I actually want to print the min and max T over the time period for each cell, can you spot any issue with the attached subroutine?

Best regards,
Xiaoxue

Hello,

cs_array_reduce* reduced data spatially, not in time.

So in your case, your best option is to create 2 additional property fields (one for min, one for max), and in cs_user_extra_operations, update the min and max value at each position by comparing them with the current temperature.

Best regards,

Yvan

Hi Yvan,

Thanks a lot, I understand it now.

Xiaoxue