Adapt mesh

This dialog is opened via Computation Menu.

The Adapt mesh dialog assists you in the adaptation of the unstructured mesh density in the regions by stretching of triangles in the vicinity of the region boundaries. The mesh nodes are shifted towards the boundary, the number of nodes remains unchanged.

The adapted mesh is only required by turbulent convection computation. Some minimum mesh density near the region boundary should be available before the procedure begins.

Adapt mesh dialog 

Figure 51. Adapt mesh dialog

Item

Description

Regions for mesh Adaption

Selects the regions for the mesh stretching. Two methods are used to select them:

  • adapt for physical phenomena

    Automatically selects all regions involved into the computation of a physical model. The available physical models are provided in the models selector -   - and the user should select one of them. The default model is turbulent energy.

    The nodes are moved toward the Dirichlet or Poincare boundaries.

  • adapt for selected regions

    Selects manually the desired regions. You have first to select them from the drawing area using the mouse (Ctrl+left mouse button).

    The nodes are moved toward the external boundary of the selected regions.

The number of regions selected for mesh adaption is shown in the dialog.

Parameters for mesh refinement

The degree of stretching can be controlled by two supplied methods:

  • decrease distance by factor of

    Reduces the distance between the boundary and the closest node in the interior of the region approximately by the prescribed factor.

  • distance last node - boundary

    Prescribes the resulted distance to the boundary, default is 0.001 m.

Related Procedures

Adapting mesh