Size 1 subnode is active on all no-slip walls and prescribes a somewhat finer mesh there. ![]() Size subnode contains a set of mesh size parameters that depend on the property settings and the bounding box of the geometry.The physics-controlled meshing sequence for the Ahmed body model, which we also used in the previous blog post, looks like this: This controls the size scale of the elements.Walls, for example, can induce finer meshes and boundary layer meshes.A turbulence model with automatic wall treatment, for example, gives finer mesh than a laminar flow model.Such a sequence depends on the following aspects: In this follow-up blog post, learn about physics-controlled meshing, adaptive mesh refinement, and how to use a variety of meshing tools in the COMSOL Multiphysics® software for your fluid flow simulations.Īfter setting up the flow conditions for a fluid flow model, COMSOL Multiphysics enables us to invoke physics-controlled meshing sequences. We have already discussed the factors that make a high-quality mesh and how to prepare a CFD model geometry for meshing.
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