Global Tetra parameters

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Global Tetra parameters

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The following parameters can be defined in this area:

Global tetra parameters

Global tetra parameters

Global element scale factor: Multiplies other mesh parameters to globally scale the model. For a list of parameters affected by this scale factor, please see the ICEM-CFD documentation. For example, if the Max Element Size of a given entity is 4 units, and the Global Element Scale Factor is 3.5, then the actual maximum element size used for meshing of that entity will be 4 * 3.5 = 14.0 units. The Global Element Scale Factor can be any positive real number, and it allows you to globally control the mesh size instead of changing the mesh parameters for different entities.

Global element seed size: Controls the size of the largest element. The largest element size in the model will not exceed this value multiplied by the Global Element Scale Factor. Normally it is recommended that this value is a power of 2. Even if you specify a value other than a power of two, some meshers (Octree/Patch Independent) approximate the element sizes to the nearest power of two while meshing. Because of that, you can specify power of 2 values only. To specify values different than power of 2, set the parameters by using the proper ICEM-CFD tools.

Min. size limit: Specifies the size limit for the smallest element. Mesh elements will be limited from being subdivided smaller than this value. This option is applicable only when Curvature/Proximity Based Refinement is enabled. Because of that, you have to enable it in order to be used by CFturbo2ICEM.

Edge criterion: Used by the tetra mesher to deal with dirty geometry. The default value is 0.2. For a perfect model the value could approach 0.0. This value is used to determine if an edge is intersected by a surface. If one end of an edge is on a surface and the edge is intersected by a surface, the second intersection might or might not be used to split the edge depending on the “edge criterion”. If the distance from the end of the edge to the intersection is less than “edge criterion” times the length of the edge then the intersection will be ignored. Otherwise the intersection will be used to split the edge.

Please see the ICEM-CFD documentation for more information.