Unable to output heat flux for rear wall stl region in MFIX-DEM

MFiX
,
1

Hello,

I have followed the procedure of heat transfer from rotating drum but I am getting error to output the heat flux for this geometry.
Only rear wall is heated to a temperature. I want to output the heat flux from this wall.

Please help me to rectify the error.
I have attached the file below:

box_heat_transfer - Copy.zip (33.1 MB)

2

You have stl files but did not assign any BC to them so the cartesian grid cut cell is turned off (see output message). The side effect is DEBUG_CG is not allocated. You can allocate is manually:

      ALLOCATE(DES_QwFlux_Avg(DIMENSION_3, DIMENSION_M))

      if(.not.allocated(DEBUG_CG)) allocate(DEBUG_CG(DIMENSION_3,15))

      ! Zero arrays
      DES_QwFlux_Avg(:,:)=ZERO
      QW_SAMPLE_TIME = ZERO
      DEBUG_CG = ZERO
3

Thank you for your clarification.

tmp_0845d6a4-712d-40c3-a960-2f202489e085
tmp_0845d6a4-712d-40c3-a960-2f202489e0851090×496 18.8 KB

I didn’t understand what is the sample time and how it’s calculating time averaged heat flux?

How do I get particular heat flux value from the wall when wall temperature is set to say 345.15K?