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Numerical Solution Procedure in ANSYS

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FLUENT will follow the Finite-Volume Method and will divide the domain into multiple control volumes or "cells".
From the integral form of the governing equations, it will perform a control volume balance for each each and write algebric nonlinear equations for them, and then linearize these equations..
Next, it will solve iteratively this equations and stop the iteration when the Residuals are below a certain specified tolerance.

Velocity, pressure, angular velocity and turbulence parameter k are calculated in the cell centers, after inverting the matrix of the system of algebric equations in cell-center values.
With these values, the post-process tool will derive everything else that we might want, like wall shear, etc.

Hand-Calculations of Expected Results

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