问题
I would like to simulate 3 pumps and a pressure sink. The problem now is if I want the pump to pump the medium in the opposite direction(backflow), the orifice does not work anymore... Can anyone please help me?
Picture of the model
Picture of the signal
This is the error message:
Log-file of program ./dymosim
(generated: Thu Mar 08 09:21:33 2018)
dymosim started
... "dsin.txt" loading (dymosim input file)
Residual component 1 of system 1 is 1.255542e+002
Residual component 2 of system 1 is 1.255542e+002
Residual component 3 of system 1 is 1.255542e+002
LINEAR SYSTEM OF EQUATIONS IS SINGULAR AT TIME = 0
... Linear system of equations number =
... Variables which cannot be uniquely computed:
pump.port_a.h_outflow = 83680
... NOT ACCEPTING SINCE TOO LARGE RESDIUAL
Trying to solve non-linear system using global homotopy-method.
Residual component 1 of system 1 is 1.255542e+002
Residual component 2 of system 1 is 1.255542e+002
Residual component 3 of system 1 is 1.255542e+002
LINEAR SYSTEM OF EQUATIONS IS SINGULAR AT TIME = 0
... Linear system of equations number = 1
... Variables which cannot be uniquely computed:
pump.port_a.h_outflow = 83680
... NOT ACCEPTING SINCE TOO LARGE RESDIUAL
Error: Failed to start model.
来源：https://stackoverflow.com/questions/49168569/backflow-orifice-zeta