Step 3: Models

Models

1.   Enable heat transfer by enabling the energy equation.

Models Energy Edit...

2.   Enable the realizable $k$- $\epsilon$ turbulence model.

Models Viscous Edit...

(a)   Select k-epsilon (2 eqn) in the Model list.

(b)   Select Realizable in the k-epsilon Model list.

  The realizable $k$- $\epsilon$ model gives a more accurate prediction of the spreading rate of both planar and round jets than the standard $k$- $\epsilon$ model.

(c)   Retain the default selection of Standard Wall Functions in the Near-Wall Treatment list.

(d)   Click OK to close the Viscous Model dialog box.

3.   Enable chemical species transport and reaction.

Models Species Edit...

(a)   Select Species Transport in the Model list.

(b)   Select methyl-alcohol-air from the Mixture Material drop-down list.

  The Mixture Material list contains the set of chemical mixtures that exist in the ANSYS FLUENT database. You can access a complete description of the reacting system by selecting one of the pre-defined mixtures. The chemical species in the system and their physical and thermodynamic properties are defined by the selection of the mixture material. You can alter the mixture material selection or modify the mixture material properties using the Create/Edit Materials dialog box.

(c)   Click OK to close the Species Model dialog box.

  When you click OK, ANSYS FLUENT will list the properties that are required for the models you have enabled. An Information dialog box will open, reminding you to confirm the property values that have been extracted from the database.

(d)   Click OK in the Information dialog box to continue.