At this stage, right-click on the legend and select ‘Use continuous scale’ to make the color scheme smoother:įigure 28: The pressure visualization on the blades and bottom surface of the impeller reveals a high distribution on the edge towards the exit of the pump, near the exit of the fluid. Once you select the faces, right-click on the viewer and choose ‘Hide selection’Īfter hiding the first set of faces, you may have to hide more internal faces before the blades are fully visible.To make the blades visible, you can select the outer faces by clicking on them.This way, the pressure levels are displayed on the boundaries Under Parts Color, make sure that the Coloring is ‘Pressure’.First, let’s visualize the pressure levels on the blades: Figure 27: In the post-processor, you can still use the selection functionalities available in the Workbench SimScale has a built-in post-processing environment, which can be accessed by clicking on ‘Solution Fields’ or ‘Post-process results’, as in figure 25. This article gives more insight into convergence in CFD simulations. Smaller residuals indicate a more tightly converged solution.
After roughly 600 iterations, the results are very stable.Īlso, make sure to check the convergence plots to see residual levels. For example, let’s have a look at velocity at the outlet: Figure 26: Velocity at the outlet control. So what are the key parameters? For a centrifugal pump simulation, the velocity at the outlet, the pressure at the inlet, and forces onto the impeller are parameters of interest. At this point, the simulation is considered converged.
As the iterations go on, key parameters are expected to stop changing. With the previously set result controls, it’s possible to assess convergence. You can run multiple simulations in parallel, only changing the flow rate (in the velocity inlet boundary condition).įor more information about pump curves, please check out this blog post. With SimScale, it’s easy to get the pump curve for your geometry.
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