Boundary condition:channel inlet x=01.u=ujFor fluid T, =Tm=293.15K2.Channel outlet x=3mmP, = Pou = latmaT1)=0Forfluid -k,(03.fluid/solid surfaceu=V=0aT-k(%)--k,(T=TOyWhere (n) is thecoordinatenormal to the wall4.At side wall-k()=q=30W/cm2111/37
11/37 Boundary condition: 1. channel inlet x = 0 f u u = For fluid T T f = = in 293.15K 2. Channel outlet x = 3mm P P f = = out 1atm For fluid ( ) 0 f f T k x − = 3. fluid/solid surface u v = = 0 ( ) ( )f s s f T T k k n n − = − Where (n) is the coordinate normal to the wall 4. At side wall 2 ( ) 30W/cm s s T k q y − = = 𝑇𝑠 = 𝑇𝒇
StarttheFluentsoftwareFluent Launcher口ANSYSFluent Launcher1.Choose2-DimensionOptionsO2DDouble Precision2. Choose display optionsSerialDisplay OptionsotterReading3. Choose Serial processingEmbedGraphicsndowsWorkbenchColcoption+ShowMceOptionsQKDefaukHelpCanceNote:DoubleprecisionorSingleprecisionFor most cases the single precision version of Fluent is sufficient.Forexample,for heat transfer problem,ifthethermalconductivity ratio between different components are high, it isrecommendedto useDoublePrecisionVersion12/37
12/37 Start the Fluent software 1. Choose 2-Dimension 2. Choose display options 3. Choose Serial processing option Note: Double precision or Single precision For most cases the single precision version of Fluent is sufficient. For example, for heat transfer problem, if the thermal conductivity ratio between different components are high, it is recommended to use Double Precision Version