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Old   July 16, 2007, 03:53
Default Residuals
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Joeblue
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Hello, I've one question about the Residuals in Fluent 6.3. In the Residuals-window there's one graph called continuity. Does somebody know exactly what it is and how it's calculated? All other Residuals convergence fast, only the continuity stays flat at 1e-02. Why didn't the simulation convergence.

Thank you in advance.

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Old   July 16, 2007, 06:59
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Muhammad Sohail
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Hello,

I think to converge your solution your should tight your mesh and/or change your discretization scheme.

Regards. Sohail
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Old   July 16, 2007, 08:25
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Joeblue
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Thank you for answering me. I already tried a finer mesh (Y+~1). In both cases I used the second order accuracy because of the tetrahedral grid.

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Old   July 19, 2007, 09:33
Default Re: Residuals
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tom
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continuity depicts the conservation of mass. check your bc's, monitor the inlet/outlet mass flowrate... going to finer mesh and higher order accuracy will tend to slower convergence in most cases!
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