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32.5.6 Adapt/Yplus/Ystar...

The Adapt/Yplus/Ystar... menu item opens the Yplus/Ystar Adaption panel.



Yplus/Ystar Adaption Panel


The Yplus/Ystar Adaption panel allows you to mark or adapt boundary cells on specified wall zones based on the non-dimensional $y^+$ or $y^*$ parameter. See Section  26.9 for details.

figure

Controls

Options   contains the check buttons that toggle the ability to mark and/or adapt cells for refinement or coarsening.
Refine   toggles the ability to refine cells or mark cells for refinement.

Coarsen   toggles the ability to coarsen cells or mark cells for coarsening.

Type   contains the check buttons that enable adaption based on $y^+$ or $y^*$.
Yplus   enables $y^+$ adaption.

Ystar   enables $y^*$ adaption.

Wall Zones   contains a selectable list of active wall zones. Boundary cells associated with the wall zones you select will be marked or adapted based on the options, thresholds, and limitations applied in the panel.

Min/Max   displays the minimum and maximum cell values of $y^+$ or $y^*$ for all cells associated with viscous wall zones. Note that these values are independent of the wall zones selected. The real number field values are not editable; they are purely informational.

Min Allowed   designates the threshold value for coarsening the grid. Cells with $y^+$ or $y^*$ values below the minimum threshold will be marked for coarsening.

Max Allowed   designates the threshold value for refining the grid. Cells with $y^+$ or $y^*$ values above the maximum threshold will be marked for refinement.

Manage...   opens the Manage Adaption Registers panel, which allows you to display and manipulate adaption registers that are generated using the Mark command.

Controls...   opens the Grid Adaption Controls panel, which allows you to control certain aspects of the adaption process.

Adapt   adapts the grid based the coarsening and refining toggle buttons, the wall zones selected, the minimum and maximum $y^+$ or $y^*$ allowed, and the adaption limits.

Mark   marks cells to be refined and/or coarsened based on the wall zones selected and the minimum and maximum $y^+$ or $y^*$ allowed in the grid. This command produces an adaption register. For information on using adaption registers, see Section  26.11.1.

Compute   computes the minimum and maximum values of $y^+$ or $y^*$ on all cells on viscous walls and displays them in the Min and Max real number fields. Note that these are the extremes for the $y^+$ or $y^*$ values of every cell on a viscous wall, not just the cells associated with the selected zones.


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