Gambit edge face meshing 边界与面网格划分.ppt

Edge and Face Meshing Meshing - General General meshing characteristics Edges, Faces and Volumes are directly meshed Pre-meshing Mesh edges before meshing faces to control distribution of cells in faces Mesh faces before volumes to control distribution of cells in volumes If not pre-meshed, meshing of higher geometry will first mesh all lower geometry in the following order: Edge meshing Boundary layers Face meshing Volume meshing Edge Meshing Control mesh density and distribution in a face or volume by meshing the edges first. Edge mesh distribution is controlled through the spacing and grading parameters. Using the Edge meshing form Picking Temporary graphics Links, Directions Grading/Spacing Special characteristics Apply and Defaults Invert and Reverse Options Apply without meshing Picking Edges for Meshing Picking Temporarily meshed edges When you pick an edge, the edge is temporarily meshed using white nodes Displayed edge mesh is based on current grading and spacing parameters If you modify the scheme or spacing, the temporary mesh will be immediately updated When you Apply, the mesh nodes will turn blue Sense Sense is used to show direction of grading Every picked edge will show its sense direction using an arrow The sense can be reversed by a shift-middle click on the last edge picked (this is in addition to the “next” functionality) or by clicking on the Reverse button Soft Links Picking and soft links Pick with links By enabling this option, Soft-linked edges can be selected in a single pick Linked edges share the same information and can be picked in a single pick Modifying soft links You can anytime: Form links Break links Maintain links By default, GAMBIT will form links between unmeshed edges that are picked together By default, GAMBIT will maintain links between meshed edges that are picked together Grading Controls mesh density distribution along an edge. Grading can produce single-sided or double-sided mesh Doubled-sided mesh can be symmetric