Implementation of a time varying heat sink
I have implemented a constant heat sink for the chtMultiRegionSimpleFoam solver. I did it nearly the same way like they did it in this thread:
Now I want to vary this heat sink over the time. I want to configure the heat sink in a table, the same way you do it with the uniformFixedValue boundary condition:
How can I implement this?
For some time swak4Foam has something called expressionSource that allows you to specify sources as expressions (how to add that to your solver search the message board for expressionSource)
The latest release of swak4Foam has a subclass of basicSource. So every solver that has basicSource built in can use a swakish source term (you'll have to load the library with libs in controlDict of cource).
And then there is always the possibility to hand-code it yourself ...
I found a solution for my purpose. I implemented a time varying heat sink which has a constant volumetric heat flux on the whole field.
I defined a config file where you can specify pointwise time and heat flux. Then I use linear interpolation to get the right heat flux value.
I've got a similar problem. I want to set up a surface heat flux which linearly decreases by time. Could you please post the settings for your sink in your 'T'-file? I tried "compressible::turbulentheatFluxTemperature" but unfortunately it won't accept a table as heat flux input.
I'd really appreciate your help.
Can you place the code here with which you have modeled unsteady or time dependent heat sink.
I would appreciate it.
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