ANSYS18网格技术介绍

1、ANSYS 18.0网格工具介绍目录ANSYS Meshing模块概览WB Meshing简介及新功能Fluent Meshing简介及新功能ICEM CFD 简介及新功能ACT模块介绍WB MeshingGeneral meshing tool for multiple physicsPersistent in Workbench without need of scriptsICEM CFDHex meshing for complex geometryScriptable in WorkbenchMultiphysicsFluent MeshingUnstructured meshing

2、 for complex assemblyScriptable in WorkbenchCFDIntegrated in WBCFD/Shared LibrariesCFD & MechanicalANSYS Meshing R18Class 1Class 2Class 3Class 4Class 5Geometry CorruptionVery HighHighLowMediumMediumGeometry Complexity (# parts or bodies) 1,000100 to 1,000 100 100 parts Create (from tree)Opens the cr

3、eate Object panelSelect a suitable nameSelect mesh typeCreateCAD 模型导入后的部件命名规则Import of CAD with Share Topology invoked in DM/SpaceClaimBy default, the import by part (or file) does NOT use the part-nameas prefixOption to Import CAD with or without featuresR17.0R18.0包面网格技术更新对于不同Case的整体包面网格生成过程提速效果典型的

4、Postwrap 过程提速效果Operation Speedup(%)Imprinting10Mark self- intersection30Fix self-intersection10Remeshing (10 M)10CaseSpeedup (%)Rebreather29Burner24Landinggear36Airbox35Combustor6棱柱层PrismImproved Stair-Step handlingStair-Stepping Quality improvement (beta)也适用于多面 体网格多面体网格在高曲率表面边界层上由于高的AR进行边界层的切割在网格的健

5、壮性以及网格质量上继续优化AirfoilR17.0 w/o splitR17.1 with splitPoly count246308311048 26% more cellsMax Orthoskew1.17 (36 cells 1)0.996Max AR50.5k9500 prism = 3052多面体-四面体/六面体的连接 (beta)生成共节点的多面体-六面体交界面Octree HexCore对体网格使用Octree 方法快速的笛卡尔网格生成支持BOIImproved peel layer handlingImproved Island handling验证案例Buffer layer

6、 of 2 and peal layer of 1Change in Worst skewness; max 2-3 %Oil platform does not include Refinement regions or BOIsHexCore + TetR18.0 Cartesian HexcoreR18.0 Octree GeodesicHexcoreSpeed up (%)CaseCell Count (millions)CPU time (mins)M cells/ minsCell Count (millions)CPU time (mins)M cells/ minsOil Pl

7、atform13.611.61.213.89.01.531%Landing Gear13.64.43.117.74.53.927%F1 Section40.815.82.637.210.23.638%F1 Car170.986.42.0163.658.62.840%/mesh/hexcore/controls octree-hexcore? YesNote that up-to-boundary is not supportedScoped Sizing setup (transfer from Cartesian setup)Set Max size same to /mesh/hexcor

8、e/controls/max-cell-length.Set the Min size to (Max / 2n), and slightly smaller than surface mesh min sizeDefine a Meshed size controls with all the boundary face zones of the object.Define BOI with a size slightly bigger than corresponding refinement region sizeCompute Size field in NOT neededAuto

9、mesh基于Octree 的HexCore 设置UI 改进自定义面板的尺寸更直观的图标使用鼠标滚轮进行模型缩放Meshing SolverFluent Meshing-Solver 流程Geometry objects and Unreferenced faces preservedas imprint surfaces during Switch to SolutionFluent MeshingFluent Solver在进行“swtich-to-mesher”操作用继续保留模型树(beta) Solver综合性的功能更新 (R18.0 )alidationInverse Ortho Qu

10、ality由17.2的beta 功能变成正式功能Can be useddrive Orthogonal Quality in ANM, etc.API utility functions scripted workflowsOver 100 new utility functions to aid batch executionsZone lists by entities, connectivity, wrapped, unref.Mesh setup, mesh statistics (counts, area, quality ) and vObject, Face Zone label

11、, RegionsDiagnostics reports and marksRefinement regions to Bbox conversionsPivot scaling, hole patchingRename, replace, cleanup, renumber, copyzones, labels and objectsConditional zones merge, separation, deletionsList and string operations Folder and file managementBackward compatibilityDocumented

12、 (Appendix D)脚本化流程所需的APIBoundary APIsMarking and improving quality using combined split and collapseoperationsCan be used to further improve qualityConnect APIsJoin/intersect and stitch operationsLabel based (matching pairs)Robustness improvementsExamples are provided in docGUI exposure in later rel

13、easesICEM CFD 简介及新功能交互式的网格编辑结构化六面体网格生 成处理复杂的几何模型在Workbench中继承支持结构化和非结构化六面体网格自动或者人工的尺寸控制完整的网格质量判别标准支持主流求解器的网格输出支持批处理先进的六面体网格生成工具BMW内燃机航空旋转机械结构分析block conversion功能增强Advanced option converts free face to mapped by selecting corner verticesImprint face 功能增强Split block-Imprint face does equivalent of imp

14、rint + split block between facesImprint face/split block by imprint supportNormalUser defined directionSplit free block 功能增强When splitting, the resulting block will be mapped, swept or free depending on side faces1 Free BlockSide faces are mappedResulting blocks after imprint are both swept blocksFr

15、ee Block in central regionSide faces are mappedAfter split block by blend between two faces,resulting blocks are mapped & sweptconstructblocks功能强化自动将边转换成样条曲线更容易察看模型多域更有用O-Grids通过与形状的链接增强角网格质量Default O-Grid uses interpolation to create generally good mesh in internal cornersLink Shape provides exact

16、offset layers but manual clean up ensures mesh quality in the cornersDefaultLink ShapeInternal edges/faces are linked to external edges/faces回放控制编辑能力增强Directly edit journaledcommandsCut/Copy paste within replay and/orfrom message window orother sourceImproved journaling ofvariablesReplay while in ed

17、it moreClean operations enhanced增强了与ANSYS其他产品模块的数据传递功能ANSYS SpaceClaim imports ICEM CFD Tetin filesImported as separate partsAdjust parts in ICEM CFD and use Build Topology to bring in solidsFaceted curves/surfaces not yetsupportedDirectly connect to downstream ANSYS Mechanical systemACT模块介绍AdvWrap

18、ACT使用FM进行自动化的前处理对于复杂的几何模型进行包面和体网格生成支持发动机舱、气动外流场、舱室冷却的网格生成基于最佳实践的快速网格生成模板最小化人工干预设置伴随生成过程自动生成Excel 表格以进行输入数据的重用Adwrap 的输入几何文件部件管理数据AdvWrap ACTAdvWrap ACTAdvWrap ACTWorkbench Environment易用流程清晰可以参数化优化多物理场ACTWB 定制FM 定制- 定期更新Fluent MeshingTechnology四面体/六面体/多面体最优化设置网格质量控制划分速度提升内存占用优化Workbench Poly Meshing for Fluent在WB中优化网格 以供Fluent使用Enhancements in 2016Available in App st