fluent中多孔介質(zhì)設置問題和算例(編輯修改稿)
2025-04-23 23:35 本頁面
【文章內(nèi)容簡介】 Turbulence group box.(c) Enter 5% for the Backflow Turbulent Intensity.(d) Enter 42 mm for the Backflow Hydraulic Diameter.(e) Click OK to close the Pressure Outlet panel.5. Retain the default boundary conditions for the walls (substratewall and wall) and close the Boundary Conditions panel.Step 5: Solution1. Set the solution parameters. Solve /Controls /Solution...(a) Retain the default settings for UnderRelaxation Factors.(b) Select Second Order Upwind from the Momentum dropdown list in the Discretization group box.(c) Click OK to close the Solution Controls panel.2. Enable the plotting of residuals during the calculation. Solve/Monitors /Residual...(a) Enable Plot in the Options group box.(b) Click OK to close the Residual Monitors panel.3. Enable the plotting of the mass flow rate at the outlet.Solve / Monitors /Surface...(a) Set the Surface Monitors to 1.(b) Enable the Plot and Write options for monitor1, and click the Define... button to open the Define Surface Monitor panel.i. Select Mass Flow Rate from the Report Type dropdown list.ii. Select outlet from the Surfaces selection list.iii. Click OK to close the Define Surface Monitors panel.(c) Click OK to close the Surface Monitors panel.4. Initialize the solution from the inlet. Solve /Initialize /Initialize...(a) Select inlet from the Compute From dropdown list.(b) Click Init and close the Solution Initialization panel.5. Save the case file (catalytic ). File /Write /Case...6. Run the calculation by requesting 100 iterations. Solve /Iterate...(a) Enter 100 for the Number of Iterations.(b) Click Iterate.The FLUENT calculation will converge in approximately 70 iterations. By this point the mass flow rate monitor has attended out, as seen in Figure .(c) Close the Iterate panel.7. Save the case and data files (catalytic and catalytic ).File /Write /Case amp。 Data...Note: If you choose a file name that already exists in the current folder, FLUENTwill prompt you for confirmation to overwrite the file.Step 6: Postprocessing1. Create a surface passing through the centerline for postprocessing purposes.Surface/IsoSurface...(a) Select Grid... and YCoordinate from the Surface of Constant dropdown lists.(b) Click Compute to calculate the Min and Max values.(c) Retain the default value of 0 for the IsoValues.(d) Enter y=0 for the New Surface Name.(e) Click Create.2. Create crosssectional surfaces at locations on either side of the substrate, as well as at its center. Surface /IsoSurface...(a) Select Grid... and XCoordinate from the Surface of Constant dropdown lists.(b) Click Compute to calculate the Min and Max values.(c) Enter 95 for IsoValues.(d) Enter x=95 for the New Surface Name.(e) Click Create.(f) In a similar manner, create surfaces named x=130 and x=165 with IsoValues of 130 and 165, respectively. Close the IsoSurface panel after all the surfaces have been created.3. Create a line surface for the centerline of the porous media.Surface /Line/Rake...(a) Enter the coordinates of the line und
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