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Forum: CFX

March 8, 2016, 17:55

Replies: 9

ANSYS CFX Solver Domain Imbalance

Views: 10,238

Posted By ghorrocks

That is why imbalances are not the default...

That is why imbalances are not the default convergence option.

Image this: If you have a box with only a single opening, mass conservation tells you that there will be no net mass flow through the...

Forum: CFX

February 6, 2015, 04:44

Replies: 9

ANSYS CFX Solver Domain Imbalance

Views: 10,238

Posted By ghorrocks

Then simply run it longer and watch the...

Then simply run it longer and watch the imbalances in the solver manager. They should by converging to zero - if so then just run it longer for tighter convergence. If they are still bouncing around...

Forum: CFX

February 5, 2015, 20:37

Replies: 9

ANSYS CFX Solver Domain Imbalance

Views: 10,238

Posted By ghorrocks

Possibly. But it does mean that it is highly...

Possibly. But it does mean that it is highly likely your simulation is not adequately converged. You might be able to fix it by simply running the simulation longer (I presume this is a steady state...

Forum: CFX

January 15, 2014, 05:53

Replies: 9

ANSYS CFX Solver Domain Imbalance

Views: 10,238

Posted By ghorrocks

The domain imbalance is simply the sum of that...

The domain imbalance is simply the sum of that variable over the domain's boundaries. So for mass, it is the the sum of all the inlets plus the outlets (noting that flow into the domain is positive...

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