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Fluent 6.3 VS Fluent 13

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Old   October 17, 2011, 04:41
Default Fluent 6.3 VS Fluent 13
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Hi all,

I have a problem (well...it's not really a problem, just my curiosity).

I loaded a mesh in fluent 6.3 and the same mesh in fluent 13 (ansys 13). Whit same model, viscosity and all other parameters I run 500 iterations and then I saved cases and file and closed the program. When I restart cases and datas in 6.3 i see some "jumps" or "snaps" in residuals and in forces coefficients (Cm Cd and Cl), while in Fluent 13 there are none (it keep the calculation on smoothly).

How do you explain this?

Thanks
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