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I studied a paper about simulation of turbines using Fluent that included the following sentence, which I don't understand:

All converged solutions had a mass imbalance of less than 0.3%

What does the mass imbalance of converged solutions refer to?

How can I ensure this condition is met in Fluent?

706Astor
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user19061
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1 Answers1

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Mass imbalance is a measure of the error in the solution. You would typically set the limit for this in the "Solution Controls" section of the inputs (if using the GUI). For mass imbalance, set the tolerance for residuals on the continuity equation. The solver will keep iterating until it finds a solution that satisfies all your residual tolerances, or until it reaches the limit of iterations that you set.

Carlton
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