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A second-order discretization scheme will be used to approximate the solution. In order to implement the second order scheme click on Solution Methods then click on Momentum and select Second Order Upwind as shown in the image below.
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https://confluence.cornell.edu/download/attachments/118771076/SecOrder_Full.png |
Solution > Monitors > Residuals
Set Absolute Criteria for all equations to 1e-6.
Set Convergence Criteria
FLUENT reports a residual for each governing equation being solved. The residual is a measure of how well the current solution satisfies the discrete form of each governing equation. We'll iterate the solution until the residual for each equation falls below 1e-6. In order to specify the residual criteria (Click) Monitors > Residuals > Edit..., as shown in the image below.
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https://confluence.cornell.edu/download/attachments/118771076/EditResid_Full.png |
Next, change the residual under Convergence Criterion for continuity, x-velocity,and y-velocity, all to 1e-6, as can be seen below.
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https://confluence.cornell.edu/download/attachments/118771076/ResidMon_Full.png |
Lastly, click OK to close the Residual Monitors menu
Higher Resolution Image
Also, under Options, select Plot. This will plot the residuals in the graphics window as they are calculated, giving you a visual feel for how the iterations are proceeding to convergence.Click OK.
Solution > Solution Initialization
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