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FOAM FATAL ERROR: Continuity error cannot be removed by adjusting the outflow. |
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December 15, 2016, 08:15 |
FOAM FATAL ERROR: Continuity error cannot be removed by adjusting the outflow.
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#1 |
New Member
Join Date: May 2016
Posts: 25
Rep Power: 10 |
Hello,
I'm trying to run a simulation it gives the following error: Code:
--> FOAM FATAL ERROR: Continuity error cannot be removed by adjusting the outflow. Please check the velocity boundary conditions and/or run potentialFoam to initialise the outflow. Total flux : 105.971 Specified mass inflow : 546831 Specified mass outflow : 0 Adjustable mass outflow : 0 This are the initial conditions for velocity and pressure: Velocity Code:
dimensions [0 1 -1 0 0 0 0]; internalField uniform (0 0 0); boundaryField { wall { type noSlip; } inletSmall { // type zeroGradient; type fixedValue; value uniform (0 1.2 0); } inletBig { // type zeroGradient; type fixedValue; value uniform (0.4 0 0); } outlet { type zeroGradient; } } Code:
dimensions [0 2 -2 0 0 0 0]; internalField uniform 0; boundaryField { wall { type zeroGradient; } inletSmall { // type fixedValue; // value uniform 1010.325; type zeroGradient; } inletBig { // type fixedValue; // value uniform 1010.325; type zeroGradient; } outlet { // type fixedValue; // value uniform 0; type zeroGradient; } } Does anyone know how to help me? |
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December 15, 2016, 09:23 |
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#2 |
New Member
Peter Lustig
Join Date: Dec 2016
Posts: 3
Rep Power: 9 |
Hi,
you could try to set the pressure outlet boundary to type fixedValue; value uniform 0; Keep the other settings as you posted it here. |
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December 15, 2016, 09:24 |
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#3 |
New Member
Join Date: May 2016
Posts: 25
Rep Power: 10 |
Found the solution.
The error was that in the output patch both velocity and pressure were set to zeroGradient. By setting an outlet pressure the solution could be found! Thanks anyway |
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December 15, 2016, 09:25 |
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#4 |
New Member
Join Date: May 2016
Posts: 25
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Just found out. Thanks anyway HorstPeter!
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April 21, 2017, 00:46 |
Mixing elbow
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#5 |
New Member
Farshad
Join Date: Apr 2017
Posts: 2
Rep Power: 0 |
Hello
I am new comer to open Foam. could you please somebody help me for this alarm. --> FOAM FATAL IO ERROR: keyword inletValue is undefined in dictionary "/home/farshad/Desktop/elbow/0/k.boundaryField.pressure-outlet-7" file: /home/farshad/Desktop/elbow/0/k.boundaryField.pressure-outlet-7 from line 35 to line 36. From function dictionary::lookupEntry(const word&, bool, bool) const in file db/dictionary/dictionary.C at line 402. FOAM exiting |
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April 25, 2017, 11:47 |
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#6 |
New Member
Join Date: May 2016
Posts: 25
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This alarm says that you haven't defined a value for k.
This might be a better thread for you: turbulentIntensityKineticEnergyInlet boundary condition |
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October 10, 2019, 05:29 |
BC for Outlet
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#7 | |
New Member
Mohamed Bennour
Join Date: Sep 2019
Posts: 5
Rep Power: 7 |
Quote:
hi how did you set your BC for outlet I become the same error message but I couldn't fix it thx for your help |
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April 18, 2023, 05:14 |
Hi getting a same error, can anybody help ??
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#8 |
New Member
Ashit Kumar Nath
Join Date: Mar 2023
Posts: 1
Rep Power: 0 |
velocity
dimensions [0 1 -1 0 0 0 0]; internalField uniform (0 0 0); boundaryField { upperWall { type noSlip; } frontAndBack { type noSlip; } lowerWall { type noSlip; } inlet1 { type fixedValue; value uniform (8 0 0); } inlet2 { type fixedValue; value uniform (10 0 0); } outlet { type pressureInletOutletVelocity; value uniform (0 0 0); } defaultFaces { type empty; } } Pressure [p_rgh] dimensions [1 -1 -2 0 0 0 0]; internalField uniform 0; boundaryField { upperWall { type fixedFluxPressure; value uniform 0; } frontAndBack { type fixedFluxPressure; value uniform 0; } lowerWall { type fixedFluxPressure; value uniform 0; } inlet1 { type fixedFluxPressure; value uniform 0; } inlet2 { type fixedFluxPressure; value uniform 0; } outlet { type fixedFluxPressure; value uniform 0; } defaultFaces { type empty; } } |
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boundaries condition, boundary, outflow bc, potentialfoam |
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