ANSYS18網(wǎng)格技術(shù)介紹

1、ANSYS 18.0網(wǎng)格工具介紹目錄ANSYS Meshing模塊概覽WB Meshing簡(jiǎn)介及新功能Fluent Meshing簡(jiǎn)介及新功能ICEM CFD 簡(jiǎn)介及新功能ACT模塊介紹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 模型導(dǎo)入后的部件命名規(guī)則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包面網(wǎng)格技術(shù)更新對(duì)于不同Case的整體包面網(wǎng)格生成過程提速效果典型的

4、Postwrap 過程提速效果Operation Speedup(%)Imprinting10Mark self- intersection30Fix self-intersection10Remeshing (10 M)10CaseSpeedup (%)Rebreather29Burner24Landinggear36Airbox35Combustor6棱柱層PrismImproved Stair-Step handlingStair-Stepping Quality improvement (beta)也適用于多面 體網(wǎng)格多面體網(wǎng)格在高曲率表面邊界層上由于高的AR進(jìn)行邊界層的切割在網(wǎng)格的健

5、壯性以及網(wǎng)格質(zhì)量上繼續(xù)優(yōu)化AirfoilR17.0 w/o splitR17.1 with splitPoly count246308311048 26% more cellsMax Orthoskew1.17 (36 cells 1)0.996Max AR50.5k9500 prism = 3052多面體-四面體/六面體的連接 (beta)生成共節(jié)點(diǎn)的多面體-六面體交界面Octree HexCore對(duì)體網(wǎng)格使用Octree 方法快速的笛卡爾網(wǎng)格生成支持BOIImproved peel layer handlingImproved Island handling驗(yàn)證案例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 設(shè)置UI 改進(jìn)自定義面板的尺寸更直觀的圖標(biāo)使用鼠標(biāo)滾輪進(jìn)行模型縮放Meshing SolverFluent Meshing-Solver 流程Geometry objects and Unreferenced faces preservedas imprint surfaces during Switch to SolutionFluent MeshingFluent Solver在進(jìn)行“swtich-to-mesher”操作用繼續(xù)保留模型樹(beta) Solver綜合性的功能更新 (R18.0 )alidationInverse Ortho Qu

10、ality由17.2的beta 功能變成正式功能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)腳本化流程所需的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 簡(jiǎn)介及新功能交互式的網(wǎng)格編輯結(jié)構(gòu)化六面體網(wǎng)格生 成處理復(fù)雜的幾何模型在Workbench中繼承支持結(jié)構(gòu)化和非結(jié)構(gòu)化六面體網(wǎng)格自動(dòng)或者人工的尺寸控制完整的網(wǎng)格質(zhì)量判別標(biāo)準(zhǔn)支持主流求解器的網(wǎng)格輸出支持批處理先進(jìn)的六面體網(wǎng)格生成工具BMW內(nèi)燃機(jī)航空旋轉(zhuǎn)機(jī)械結(jié)構(gòu)分析block conversion功能增強(qiáng)Advanced option converts free face to mapped by selecting corner verticesImprint face 功能增強(qiáng)Split block-Imprint face does equivalent of imp

14、rint + split block between facesImprint face/split block by imprint supportNormalUser defined directionSplit free block 功能增強(qiáng)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功能強(qiáng)化自動(dòng)將邊轉(zhuǎn)換成樣條曲線更容易察看模型多域更有用O-Grids通過與形狀的鏈接增強(qiáng)角網(wǎng)格質(zhì)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回放控制編輯能力增強(qiáng)Directly edit journaledcommandsCut/Copy paste within replay and/orfrom message window orother sourceImproved journaling ofvariablesReplay while in ed

17、it moreClean operations enhanced增強(qiáng)了與ANSYS其他產(chǎn)品模塊的數(shù)據(jù)傳遞功能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模塊介紹AdvWrap

18、ACT使用FM進(jìn)行自動(dòng)化的前處理對(duì)于復(fù)雜的幾何模型進(jìn)行包面和體網(wǎng)格生成支持發(fā)動(dòng)機(jī)艙、氣動(dòng)外流場(chǎng)、艙室冷卻的網(wǎng)格生成基于最佳實(shí)踐的快速網(wǎng)格生成模板最小化人工干預(yù)設(shè)置伴隨生成過程自動(dòng)生成Excel 表格以進(jìn)行輸入數(shù)據(jù)的重用Adwrap 的輸入幾何文件部件管理數(shù)據(jù)AdvWrap ACTAdvWrap ACTAdvWrap ACTWorkbench Environment易用流程清晰可以參數(shù)化優(yōu)化多物理場(chǎng)ACTWB 定制FM 定制- 定期更新Fluent MeshingTechnology四面體/六面體/多面體最優(yōu)化設(shè)置網(wǎng)格質(zhì)量控制劃分速度提升內(nèi)存占用優(yōu)化Workbench Poly Meshing for Fluent在WB中優(yōu)化網(wǎng)格 以供Fluent使用Enhancements in 2016Available in App st