xampl n using ommercialsftare“CEM CFD 5”Farond a crculr cyindrY.F.LiTw Dmnional polemsFow around ccuar cylidrProblmDesitionAir flowsacrosa cylidr wie uno vloty .03ms the nd tnel. The engthftei tl (lddomin） has2m ong ad 10 m hght. Thdeterocylinderis m.Wall (SideA)InletOutlet5DCylinderWall (SideB)Fluid domain5D20Dssumpion nd Boundary onditns:1. 2 densiona prblem2. tay sttecdiion3. The unifm flw velocity4. No Heat trnse5. elect e rvitationaforce6. CnstataidenstyPre-prcessng ageI tis sage, weimpen the “EM FD”toperormthepre-pocesng wo. Te baic stpsas folo:1. Ebishgomerymode2. lk the pat3. Genaton the O grid4. sh th moel anheckqulitofmesh5. Etudete e6. Reet the Cs （bouna cnditions）7. OutptoCFX571 Creating Geoety1. OpnICEMCFDDoubCk the “IEM FD” Ico， ted, yu canseete intrace ofthe ICM FDOenFileNewoject: et te nm with “cylide_2d”, ad Clik “Sae”2. Crtn emety：A. PoitsClickbutton “Creteoint” n thnclicutton “Epicit ordint”St thepits i Cartesin coodinate sstem(X, , Z) wth (X=0,Y=0, Z=0 ) rspecvely.Clc “Apl”bttonand ee th een：pint i creted A tre wdget can be se at ef f the screen () nd () Te same methd rate other points:X=0;Y=0.， -0. =5;Y=5,-50； Y=5, -5 Y=0; X=.,-0 B. aw line(curve)First f a eete tree dt, openModelGemtrynts y rht buttonSele Show Point ames ayo an ee the e of echpoint ike the fiure owdow u cnce cuves Clic utton“Creae/Modifyurve”Cl button “CrteCve”Note: teft core o th akse: elec locans wth lftbutt, mdde=de，rht=cncelSele oint by un ltbuton of he mouse.Chan heam of he Prt with “INLT”: Slt POITS.05 an PONTS.6 withlf ton (A),Andrw a lin with ide butn“doe” (B） ndheINLT a is created i htee wtTe ame steps draw hecrvs ned “OUTLET, SIDEA， IDB” ih t ONTS.7n PI.0, PNS06 ad PNTS.0， POINS.5 and PINTS.8espctively.We ll sete lin and hetree wiget Dawthecyliderick butn “Cirleoacfrm Center point and 2pots onplane”.Set trt wthnm“CYINDR”lik utto anselec pins “POITS.， PONT.0， POINT.03” wit let uttresectvely (). Da the yliderymidleutton （B).Se tre widgt：Close Pots ameUse button to fit h window.St the ody and aterial. Cick buton“Ceate Bod”Chse utton “Maerial oint” anselect “Slecte urfaces”in the “B Topolgy” menu.Chage the name the art wth “FLUID”; opnte Sw Nae of thetre iet and use elect POINTS06and OINT.08.he sae wa hange theart namewt “YLIDER” nd selc PITS.01 and POIS.02. ho ont Namead pe he tree widge：Open th bodi ou can seet lst, the FileGeomtrySave Geomty AGve it the aeith “clier2”.Click “e”. Now we begn to blck themodl. lic buto “reate Block”Se e fist one, chooe the prtwit “LUID”， frothepull don mn select“LUID”An set he Initialize lock typewith “2 Planar” lck “ply” buton e willsee tat thers o iure are caned.Frm (A) to （B)Se tetrewidget： eBlocinhe ceat smeaistantpint withbtton “Create Pont”= X=-.45,-04,-0.5,-0.，.2,-0.2，-0.5，-0.1,-0.5，0.， 1, 05， 0.2, .25，., 035， .4， .5X0 045，-04,035，0.,-0.,0.，0.15,0.1，-0.5, 0.5,.1， 015， 0., 0., 0.3, 0.35, 0.4, 0.45Nwbegn tlock theregon Click butt“Sit Block”hn seectbon “Slit ock”Se the spimetho, slet “Presied pi”Usethe put downeu toselct thePrscrbd poit， sehbton frlyselect hedg “INLT” asconly selctte Pont “PONT.0”We llsee thebloc ine thrticl dirctiof the INET.Zoohe ureThe same wa we raw the lklins.From te “PT.01 to POINS.04” eet tre wgetSelect he“locking”and slct “ndex Conl”MoeBlocig： Ide Contl (sig igt ton