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Fluent adjoint observables

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Old   November 18, 2019, 06:47
Smile Fluent adjoint observables
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Min Zhang
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I am using the ansys-fluent adjoint solver module to optimize a pipe channel. When the primary flow solution is finished, the mass-weighted average total pressure over the inlet (Pt_in_p) is 150000.0Pa. However, when i create a surface-integral observables in the adjoint module, the mass-weighted average total pressure over the inlet (Pt_in_a) is 148000.0Pa. Why is the Pt_in_p not equal to Pt_in_a?

I sincerely hope someone could give me some tips, thanks !
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