(coloured by velocity), notice that there’s a coarser mesh where there’s no Here we can see the stages as the mesh is refined at the inlet Refining here ensures these high gradients are accuratelyĬaptured. Gradients where averaged values across the cells of a coarse mesh would give a
Solidworks flow simulation mesh software#
Howĭoes it do this? Helpfully, the software looks for high pressure and velocity SOLIDWORKS Flow refine the mesh, it also does so only at specific areas. I’ve highlighted when the mesh is refined, pretty cool to see Interest (in this case one of the outlet volume flows) varies as the solution Here we see how the values for a parameter of Once fully converged the mesh is refined again until the number of refinements The coarser mesh so we see goal values changing and converging on new values. This refined mesh has a different converged solution to With a coarse mesh we see our goal values converging, once these converge the Refinements these could also be controlled here. Here I’ve selected 5 for all three values. Set the maximum refinement number and refinement level to at least this value. Refinements to complete before the solution ends. Importantly on the finishing tab we can set the number of Here I’ve setĪ delay of 20 iterations and a relaxation interval of 50 (though these will To ensure the solution has run for long enough to fully converge. On a similar noteĪ relaxation interval of iterations after the final mesh refinement can be set It’s useful to add a delay after convergence to ensure goals haveĪbsolutely converged before the next mesh refinement starts. Goals can be selected from those created in this example I’ve selected all of
Goal convergence means the mesh will be refined once our goals have converged. Strategy tells the software when to perform a mesh refinement setting this to Volumetric flow rates – so those we’ll monitor these using goals. Good solution here would show converged and mesh independent values for outlet Internal flow problem, with a single inlet splitting to multiple outlets. I’m using the simple Coletor from lessonġ of the Flow Simulation course as an example. Here we can set options for performing mesh refinement mid calculation at Simulation in just one study AND refine the mesh where the refinement’s neededĭive into the often overlooked ‘refinement’ tab on calculation control options. You that you can ensure convergence and mesh independence in SOLIDWORKS Flow Test where we vary the number of elements and see how this effects a parameterīelow shows the plot you could expect to see. Getting to this point normally requires a mesh independence This is a really useful place to be when running multiple scenarios of Using this mesh to get accurate solutions from minimal time and computationalĮffort. Study we’re looking to find that Goldilocks value where refining the meshįurther doesn’t give a more accurate result. We’ve reached a good solution - we need to do a bit more work here. Solution for the same study using a fine mesh.
Solidworks flow simulation mesh full#
Solution at this point however this isn’t the full story.Ĭonverged solution from a coarse mesh and a completely different converged Give us a different solution.It is tempting to say that we have reached a good
Goals are truly converged, then running through more iterations isn’t going to This is controlled on the finishing tab of calculation control options. Once they have then the solver will stop, FlowĪutomatically sets criteria (which can be overridden) to make sure these goals Parameters of interest (goals) reach constant values (converge). Steady state flow simulation progresses through its iterations we can see if Explaining the more straightforward to achieve of the two - convergence.
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