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I'm getting a singular matrix when using pressure control with the following initial conditions: mass flow at inlet (source) and pressure at outlet (ext_grid). I tested this behavior with replacing the pressure control with pipe - no singular matrix, got solution. I also changed the initial conditions to pressure at inlet (ext_grid) and mass flow at outlet (sink) and ran with both pressure control and pipe - got solutions in both cases.
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Hello!
I'm getting a singular matrix when using pressure control with the following initial conditions: mass flow at inlet (
source
) and pressure at outlet (ext_grid
). I tested this behavior with replacing the pressure control with pipe - no singular matrix, got solution. I also changed the initial conditions to pressure at inlet (ext_grid
) and mass flow at outlet (sink
) and ran with both pressure control and pipe - got solutions in both cases.Here is a table with the results:
Table legend:
False
= got singular matrix;True
- no singular matrix. got solutionHere is the code, simulating all the configurations above
Could I be doing something wrong?
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