radial turbine向心渦輪教程冷卻器培訓(xùn)

渦輪冷渦輪冷卻器FINE/Open&NUMECA中葉輪幾何準(zhǔn)葉輪幾何準(zhǔn)蝸殼幾何準(zhǔn)Hexpress葉輪網(wǎng)格格式轉(zhuǎn)換，整機(jī)網(wǎng)格合FINE/GUI計(jì)算設(shè)CFView結(jié)果處渦輪幾何HUB:輪轂 、下端壁、內(nèi)環(huán)SHROUD:輪緣、輪蓋、上端壁、外環(huán)SuctionSide:葉片吸力PressureSide葉片壓力LeadingEdge:葉片前緣TrailingEdge:葉片尾緣Spanwise:展向、葉高方Azimuthal:周向、葉片-葉片方向Streamwise:流Meridional:子午Periodicity:周期，葉片將幾何將幾何面用條線段描根據(jù)不同的已知條件，準(zhǔn)備數(shù)據(jù)寫寫geomturbo文件（可被Design3D調(diào)用通過鋪網(wǎng)格通過鋪網(wǎng)格面，得到據(jù)點(diǎn)分布均勻的幾何輸出線坐已知葉片維造型在AutoGrid5中生成面，指定所需的數(shù)葉輪數(shù)據(jù)提運(yùn)行調(diào)入.igs文鋪設(shè)網(wǎng)格面（分別針對(duì)吸力面、壓力面調(diào)整網(wǎng)格面數(shù)目及分用網(wǎng)格面生將幾何面用將這些曲線端壁數(shù)據(jù)提選中輪轂和輪蓋上任意一條從進(jìn)口至出口的曲線輸出即可FileImportIGES調(diào)入使用InsertNewFace功能添加

將面網(wǎng)格對(duì)角的兩個(gè)頂點(diǎn)分別放置在葉片前緣點(diǎn)和尾緣點(diǎn)上，鼠標(biāo)左鍵確定。將另外兩個(gè)頂點(diǎn)分別拖動(dòng)至葉片表面剩余兩個(gè)端點(diǎn)，則網(wǎng)格邊會(huì)自動(dòng)吸附到相鄰的邊上。1212SetNumberofPoints，分別將1、2

使用查看按鈕觀察調(diào)整后的網(wǎng)要在此處布 的網(wǎng)格點(diǎn)，以準(zhǔn)確描述該處幾

式，并輸入對(duì)應(yīng)的加密參數(shù)本例中選擇AtBothEndsInitspacingatstart:0.0001,atend,0.0001,Nbconstant 在沒有關(guān)閉t頁(yè)面的狀態(tài)下，激活另一條流向網(wǎng)格邊，則會(huì)出現(xiàn)“tdistnisuiform”，這時(shí)只需要點(diǎn)擊lytoe，IGG會(huì)自動(dòng)將剛才的附給該邊。但是這一操作的前提是后來這條邊的原始分布是nim，如果不是，那么只能通過手工重新設(shè)定

加密的原則是網(wǎng)格點(diǎn)能夠準(zhǔn)確的描述葉片形狀 22

激活網(wǎng)格面（網(wǎng)格邊變成三條白色，一條黃色），并執(zhí)行投影。通過FromFaceGrid，生成和網(wǎng)格一致的面 取消網(wǎng)格邊，網(wǎng)格，以及網(wǎng)格點(diǎn)的顯示通過GeometryViewSurfaces,選擇顯示 選中該面，通過GeometryModifysurfaceRepresentation,將該面沿葉高方向分為5個(gè)截面（在輸入欄中輸入52，回車確定。如果這時(shí)分不清哪個(gè)是葉高方向，可試著輸入，如果得到的不是沿PS1.dat格式XYZpolyline---0.06499691880189140.0364739688929025-0.0651157082113930.036587854327104----0.0655718945410230.0382419346204243-0.06567985968604940.0391854442039766一條線，通過ExportGeometryControlPoints輸出該線。 通過ViewSurface,顯示原始的兩個(gè)葉片幾何面，

分別在圖示兩條邊上添加控制點(diǎn)，將網(wǎng)格面吸附至吸力面。其余操作同Ste之后的壓力面數(shù)據(jù)提取。GEOMETRYTURBOVERSION157XYZXYZ-0.097003 -0.020-…XYZpolyline00.020-0-葉輪網(wǎng)格劃STEPSTEPSTEP–STEPSTEP子午面控制–STEPSTEP––STEPSTEPSTEPSTEPSTEPSTEPSTEP添加等Z（R）線（AddZConstant子午通道控制（FlowPath展向網(wǎng)格數(shù)目、等距網(wǎng)格比例、葉頂/葉根間隙等B2B網(wǎng)格控制(B2BMesh周期性連接表面控制（匹配/非匹配）、周向網(wǎng)格數(shù)目控制、間隙內(nèi)網(wǎng)格控制等。光順步數(shù)控制(Optimization觀察不同葉高B2B網(wǎng)格分布（ActiveB2B檢查幾何是為了避免幾何線和幾何面的定義葉片參噴嘴環(huán)葉片數(shù) 動(dòng)葉葉片數(shù) 展向網(wǎng)格展向網(wǎng)格只能檢查延展H網(wǎng) H-I網(wǎng) H-O-H網(wǎng)

OH網(wǎng) 蝶型網(wǎng)

設(shè)定中數(shù)值模型，即NumericalModel部分）。而多重網(wǎng)格的層數(shù)是通過2n1

（n葉片固壁面延展比：1.4；第一層網(wǎng)格尺用戶可嘗試改變光順步數(shù)（0，50），更B2B網(wǎng)格后觀察網(wǎng)格的變本例使用默認(rèn)值100與FlowPath只有延展比一項(xiàng)網(wǎng)格質(zhì)量不同，B2B有三項(xiàng)網(wǎng)格質(zhì)量檢查項(xiàng)，F(xiàn)lowPath&B2B均達(dá)到標(biāo)準(zhǔn)SaveProjec這一操作可將網(wǎng)格及模板同時(shí)保存。在用戶目錄中，生成12個(gè)文件，包含了所有的網(wǎng)格信息。主要的幾個(gè)有：*.geomTurbo：幾何模板，記錄了所有的幾何信息*.tr：網(wǎng)格模板文件，記錄了所有的網(wǎng)格控制參數(shù)，用戶在下次需要生成網(wǎng)格的時(shí)候可以直接打開該文件。*.igg：網(wǎng)格文件，為FINE計(jì)算所需模型讀模型處理的幾個(gè)原盡量避免在流場(chǎng)中出現(xiàn)狹小的縫隙（模型的壁面之間Dom文件精度的控蝸殼網(wǎng)格劃BasicBasicPrinciplesforMeshQuickQuickAccess1CAD1ItemusedinordertocreatethethatwillbeCreate/Edit:tocreate,subtract,intersect,export,deleteelementsoftheVisualization:tovisualizeallgeometryorsome2Mesh2Itemusedinordertocreatetheunstructuredmesh.5(or6)stepsmeshing+Initial+Adaptto+Snapto++ViscousSteps+Mouseleft-clicktoSelect/Unselect+Mouseright-clicktoEdit/Delete/RunRunningthe+SelectSteps/RunWizard(Start/Step+Color green(stepsuccessfullyyellow(stepnotredSTEPSTEPInitialChangeChangeConfigurationtoActivateActivatethefirststepofthemeshwizardandright-clicktoSTEPSTEPInitialHOWTOSELECTTHENUMBEROFREFINEMENTSTheadaptationprocesssuccessivelybisectsthecellstaggedforrefinementinoneorseveraldirections.Thesizeoftheinitialmeshcellsarethereforedividedbyafactor2NafterNsuccessiverefinements.Thismayresultinanexponentialgrowthofthetotalnumberofcellsinthemesh,eventhrouhtherefinementmaybeconfinedtosomeareasofthe.ThismayoccurwhentheuserpoorlydefinesthetargetsizeofthecellsonTargetcellsizechosentooDistancecriterionleadstoanexcessivenumberofcellsinInordertoboundthenumberofcells,theusershouldsetthe umnumberofrefinementstoaresonablelimit.Howtoselectthislimit?HOWTOSELECTTHENUMBEROFREFINEMENTSD=thesizeofinitialcellinthedirectionofyxdi=theminimumcellsizedesiredtocapturethesmallestgeometricalelementsini-directionDiyxD=0.08/ =dx=0.0065/8=Dx=0.022/ =N=max(nx,Nx)~

nx=Nx=iDkdii

wherenistheestimatednumber

lnkiHOWTOSELECTTHENUMBEROFREFINEMENTSD=thesizeofinitialcellinthedirectionofdi=theminimumcellsizedesiredtocapturethesmallestgeometricalelementsini-directionDi=theminimumcellsizedesiredtocapturethebiggestgeometricalelementsini-directionD=0.08/ =dy=0.016/ =Dy=0.028/ =yN=max(ny,Ny)~x

ny=Ny=iDkdii

wherenistheestimatednumber

lnkiHOWTOSELECTTHENUMBEROFREFINEMENTSD=thesizeofinitialcellinthedirectionofdi=theminimumcellsizedesiredtocapturethesmallestgeometricalelementsini-directionDi=theminimumcellsizedesiredtocapturethebiggestgeometricalelementsini-directionD=0.015/ =dz=0.003/ =Dz=0.015/ =zN=max(nz,Nz)~3tozx

nx=Nx=iDkdii

wherenistheestimatednumber

lnkiWhenacellistaggedforrefinement,itisalsoadvisabletotagitsneighboursinordertoensureasufficientlysmoothtransitionbetweencoarseandfinecellregions.Theprocessiscalled?refinementdiffusion?.Theintegervaluecorrespondstothenumberoflayersofneighboursofcellstowhichthediffusionoftherefinementtagisapplied,e.g.avalueof2meansthattheneighboursofacellaretaggedforrefinementtogetherwiththeneighboursoftheneighbours.NUMBEROFCELLSINThedistancecriterionisbasedonthecomputationofthedistancebetweenclosestneighbouringsurfaces.Foreachtriangledefiningthegeometricalsurface,thedistancetotheclosesttrianglesofadifferentsurfaceiscomputed.Atargetcellsizeforthecellsintersectingatriangleiscomputedbydividingtheclosestdistancebythenumberofcellsrequestedingaps,givenbytheadvancedparameter.Bydefault,thenumberofcellsingapsisfixedto7whichmeansthat5cellsusuallyremaininthemeshaftertrimming.MINIMUMCELLControlstheminimumcellsizeinthemesh.Alsoactsasacontrolonthetotalnumberofcellsinthemesh.Defaultvalueis0,meaningthatitisnotactive.UMCELLControlstheumcellsizeinthemesh.Duringtherefinementprocess,allcellswhosesizeislargerthanthe umallowablesizearerefined.Defaultvalueis1020,meaningthatitisnotactive.MESHTheaimofthedistancecriterionistoallowthenecessarynumberofrefinementsinordertofillingapsbetweensurfaces.Tothisend,HexpressTMfirstcomputesthedistancebetweensurfacesflaggedasSOLorMIR.Thedistancesaresavedinthe*.distfileandfurtherdividedbythenumberofcellswishedingaps(seeadvancedparameter)tocomeupwithatargetcellsizeinthedirectionnormaltothesurface.CURVATURETheaimofthecurvaturecriterionistoautomaticallycomputesatargetcellsizesuitableforresolvingcurvedsurfaces.SmallercellsareexpectedwherethegeometryhaslargeTARGETCELLSIZEThecarterionallowstheusertoentargetcellsizesonsurfaces.Thesizeofacellintersectingageometricalsurfaceiscomparedwiththetargetandfurtherrefineduntilthecurrentcellsizeislowerthanthetargetcellsize.STEPSTEP局部加ResultingResultingmeshafterSTEPSTEPSnapSnaptoSTEPSTEPConcave ConvexResultingmeshafterSTEPSTEPViscousInsertViscousSTEPSTEPViscousAnWithWithWithoutWithoutSTEPSTEPViscousFINE/Open否STEPSTEP否STEPSTEPSTEPSTEPSTEPSTEPSTEPSTEPSTEPSTEPSTEP設(shè)定數(shù)值參數(shù)(可選是后處理:是 文件保存路徑無(wú)空格，無(wú)中定常計(jì)算——流體網(wǎng)格塊——不激活燃燒、輻射和多孔介 下上下上本例中，只有一組轉(zhuǎn)靜子面。葉輪出口為上游，渦殼進(jìn)口為下游A解算器是在相對(duì)坐標(biāo)系下求解，因此所有葉片周圍的網(wǎng)格塊都隨著葉片一起轉(zhuǎn)動(dòng)，因此需要設(shè)定為轉(zhuǎn)動(dòng)并給定轉(zhuǎn)速。而渦殼和導(dǎo)葉屬靜止部件，轉(zhuǎn)速設(shè)為0。轉(zhuǎn)速180000RPM，轉(zhuǎn)靜子面上下亞音速（絕對(duì)數(shù)的子午分量超音速（絕對(duì)數(shù)的子午分量亞音速（絕對(duì)數(shù)的子午分量程）（只用于軸流機(jī)器超音速（絕對(duì)數(shù)的子午分量 CFL(Courant-Friedrich-Levy)數(shù)或

t

～4 求解結(jié)果，流場(chǎng)內(nèi)所有離散點(diǎn)的參數(shù)值，用于續(xù)算或者后處理（二進(jìn)制格式

.mf文件是NUMECA軟的體結(jié)果文件，尤其適用于旋轉(zhuǎn)機(jī)械的流動(dòng)計(jì)算，可非常直觀地統(tǒng)計(jì)出旋平均參數(shù)、總體性能等.mf文件包含以下信息幾何參數(shù)：半徑、面積、葉片數(shù)、轉(zhuǎn)速平均絕對(duì)速度：徑向/周向/軸向速度分量、總速度、數(shù)、氣流角平均相對(duì)速度：徑向/周向/軸向速度分量、總速度、數(shù)、氣流角平均靜參數(shù)：壓力、溫度、密度平均滯止參數(shù)：相對(duì)/絕對(duì)壓力、溫度第一打開后綴名為.run或.cfv第一第三第二第三第二第四選擇顯示方式（云圖、等值線、矢量、流線第四第六第五輸?shù)诹谖?選擇已經(jīng)收選擇Modules/CFView，或者點(diǎn)擊右上角CFView的圖標(biāo)，自動(dòng)打開當(dāng)前計(jì)算的.run用戶也可先行打開CFView：Windows/ProgramFiles/NUMECA/Fineopen31_1/CFView，再打開相應(yīng)的.run文QuickQuickAccessGr