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What are residual related coefficients in Fluent?

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Old   January 20, 2022, 19:07
Question What are residual related coefficients in Fluent?
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Rounak Baheti
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While going over the documentation on how ANSYS Fluent calculates residuals, I came across the equation: a_P \phi_P = \sum_{nb}a_{nb} \phi_{nb} + b
Here, a_P is center coefficient and a_{nb} are influence coefficients from neighboring cells. This is calculated for a general variable \phi in cell P. What exactly are these coefficients?

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fluent, residuals

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