Step l:Read and check the meshMesh-CheckCheckthe qualityand topological information of the meshDomain Extents:x-coordinate:min(m)-1.297484e-02,max(m)1.297697e-02y-coordinate:min(m),.0.000000e+00,max(m)=1.000000e-01z-coordinate:min(m)-1.296491e-02,max(m)1.296482e-02Volumestatisticsvolume(m3):3.346481e-10minimummaximumvo1ume(m3):1.745023e-08totalvolume(m3):5.257838e-05Face areastatistics(m2):1.488826e-08minimumtaceatee(m2):7.593317e-06checkinDoneSometimes the check will be failed if the mesh quality is not goodor there is a problem with the meshFacearea statistics:WARNING:invalid or face with too small area exists.WARNING:Meshcheckfailedminimumfacearea(m2):0.000000e+00maximumfacearea(m2):5.081937e-03WARNING:Themeshcontainshighaspectratioquadilateral,hexahedral,orpolvhedralcells11/58
Step 1: Read and check the mesh Mesh→Check ◼ Check the quality and topological information of the mesh ◼ Sometimes the check will be failed if the mesh quality is not good or there is a problem with the mesh. 11/58
Step2:Scalethedomain sizeGeneral→ScalemmmC3Scale...CheckReport Quality Scale MeshDonain ExtentsSealingDisplay...Units...Xaax[a] (12.97607Xain [mn) (-12. 97484ConvertUnitsYax[aa]100Yain [mm](0OSpecify Sealing FactorsSolverZain [um] -12.9649]ax[ma]12.96482Mesh Was Created InTypeVelocity Foraulation<Select)-OPressure-BasedOAbsoluteSecaling FactorsWiew Length Unit InODensity-BasedORelativeXETineOSteadyUnscaleSealeIransientCloxeHelpGravityFluent stores the mesh in units as “m', SI unit. You can show itindifferentunitssuchascm,mm,in,orft.12/58
Step 2: Scale the domain size ◼ Fluent stores the mesh in units as “m”, SI unit. You can show it in different units such as cm, mm, in, or ft. General→Scale m → mm 12/58
You can also scale the domain size use "Convert Units”01"SpecifyScalingFactors"command.Remark: Fluent thought you create the mesh in units of m.However, if your mesh is created in a different unit, such as cm,you must use Convert Units Command to change the mesh intothe right size.The values will be multiplied bythe Scaling FactorICEM: 1 cm -> Fluent: 1m-> Scale: cm, factor: 0.01XScaleMeshScale MeshDomain ExtentsScalingDomainExtentscalngxmax (m)0.00014ConvertUnitsxmn (m)0.00014ComvertUnitsmmn (m)0.014Xmax (m)f0.014OSoecifyScalngFactorsSpecifyScalngFactorsYnin(m)Ymax (m)MeshWasCreated1r-0.00050.0005n(m)0.05Ymax(m)0.09leshWosCreetedInLengthUnitInaifatlewLengthUnitIn0.0CloseHepOMelp13/58
◼ You can also scale the domain size use “Convert Units” or “ Specify Scaling Factors” command. Remark: Fluent thought you create the mesh in units of m. However, if your mesh is created in a different unit, such as cm, you must use Convert Units Command to change the mesh into the right size. The values will be multiplied by the Scaling Factor. ICEM: 1 cm -> Fluent: 1m -> Scale: cm, factor: 0.01 13/58
"Specify Scaling factors", by using this you can define your ownscaling factor.Remark:In "Convert Unit", the scaling factor is fixed, You canalso use “Specify Scaling Factors" to define your own scalingfactor. For example,as follows, the size ofx direction is doubled.Scale MeshXScale MeshDomain ExtentsScalngDomain ExterScalindxmax(n) j0.014ConvertUnitXmn ()0.014ConvertUntsXmax (n) 0.028m0.028SpeofyScalingFactorsSpedfyScaingFactYmax (m) 0.05tm)(0.05oshWasCreatedYmn.t0)0.05Ymaxt)0.05sh Wes:Creoted slew Length Unit IncaingFicalngFactor1X2CoseHelpCoseHepIf you click the Scale button by accident or use the wrong Scalingfactor,you can click the Unscale button. The old size will be recovered.14/58
◼ “Specify Scaling factors”, by using this you can define your own scaling factor. Remark: In “Convert Unit”, the scaling factor is fixed, You can also use “Specify Scaling Factors” to define your own scaling factor. For example, as follows, the size of x direction is doubled. ◼ If you click the Scale button by accident or use the wrong Scaling factor, you can click the Unscale button. The old size will be recovered. 14/58
Step 3:Choosethe physicochemical modelBased on the governing equations you are going to solve, selecttherelatedmodelinFluentRemark: Understanding the problem you are going to solve andwriting down the corresponding governing equations is the firstand most important step for numerical simulation. Withoutbackground of “Fluid mechanics” “Heat Transfer"and"Numerical Methods", it is hard to complete this step for fluidflowandheattransferproblemdiv(Fogradp)+S=0This is the equation we will solve, the energy equation for heatconduction in solid without radiation and convection.15/58
Step 3: Choose the physicochemical model Based on the governing equations you are going to solve, select the related model in Fluent. Remark: Understanding the problem you are going to solve and writing down the corresponding governing equations is the first and most important step for numerical simulation. Without background of “Fluid mechanics” ,“Heat Transfer” and “Numerical Methods”, it is hard to complete this step for fluid flow and heat transfer problem. * div grad S ( ) 0 + = This is the equation we will solve, the energy equation for heat conduction in solid without radiation and convection. 15/58