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.
https://confluence.cornell.edu/download/attachments/118771076/SecOrder_Full.png |
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.
https://confluence.cornell.edu/download/attachments/118771076/EditResid_Full.png |
https://confluence.cornell.edu/download/attachments/118771076/ResidMon_Full.png |
Here, the flow field will be initialized to the values at the inlet. That is, the initial values of all the cells will be set to 1 m/s and 0 Pa for x velocity and gauge pressure respectively. In order to carry out the initialization click on Solution Initialization then click on Compute from and select inlet as shown below.
https://confluence.cornell.edu/download/attachments/118771076/CompFromInlet_Full.png |
Prior, to running the calculation the maximum number of iterations must be set. To specify the maximum number of iterations click on Run Calculation then set the Number of Iterations to 1000, as shown in the image below.
https://confluence.cornell.edu/download/attachments/118771076/1kIter_Full.png |
https://confluence.cornell.edu/download/attachments/118771076/ResPlot_Full.png |
https://confluence.cornell.edu/download/attachments/118771076/SolConv_Full.png |
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