Introductory FLUENT Training-Solver Settings

•Using the Solver (solution procedure overview)

–Setting Solver Parameters

–Convergence

•Definition

•Monitoring

•Stability

•Accelerating Convergence

–Accuracy

•Grid Independence

•Grid Adaption

–Unsteady Flow Modeling (covered in a later lecture)

•Unsteady-flow problem setup

•Unsteady flow modeling options

–Summary

Appendix

•Solution parameters

–Choosing the solver

–Discretization schemes

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•Initialization

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•Convergence

–Monitoring convergence

–Stability

•Setting Under-relaxation

•Setting Courant number

–Accelerating convergence

•Accuracy

–Grid Independence

–Adaption

•There are two kinds of solvers available in FLUENT – Pressure based and Density based.

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•The pressure-based solvers take momentum and pressure (or pressure correction) as the primary variables.

–Pressure-velocity coupling algorithms are derived by reformatting the continuity equation

•Two algorithms are available with the pressure-based solvers:

–Segregated solver – Solves for pressure correction and momentum sequentially.

–Coupled Solver (PBCS) – Solves pressure and momentum simultaneously.

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