[shash]

Hi Everyone ,

I am working on chtMultiRegionSimpeFoam solver for simulating a fin tube heat exchanger, I wish to calculate the value of Nusselt number so i have been refering to several threads and came up with an idea to make changes to the wallGradU to calculate gradient of T at the wall patch.
But whenever i use this utility i get

Create time
Create mesh for time = 0
Time = 0
    Reading T
    Calculating wallGradT
Time = 1600
    No T
Time = 1700
    No T
Time = 1800
    No T
Time = 1900
    No T
Time = 2000
    No T
End

I am attaching the code i am using, though i think that problem is basically due to splitting of regions(solid and fluid) in chtMultiRegionSinpleFoam.
Please help me with this.


Referred link:
http://www.cfd-online.com/Forums/ope...timesteps.html

[shash]

I suppose the problem is because the "T" is in separate folder that is say for 2000 iterations : instead of 2000->T ,i have 2000->regions->T
So can anyone direct me how can i make changes to the path for utility wallGradT.
pleaseeeeeee help

[Tushar@cfd]

Hello Shiv,

You can refer to the following link on Nusselt number.

http://www.cfd-online.com/Forums/ope...lt-number.html

As stated, you can edit and make your own utility.

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Best Luck !