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19) A dialog window will appear, Click on "Visibility" and then click on the box provided (see Fig 2.3). Close the dialog box by clicking on cross.

Fig - 2.3: Window for selecting the region

20) Click "Close" and on geometry panel flow domain will appear with all regions (See Fig 2.4)

Fig - 2.4: Geometry panel with all Regions

21) Click "Next >>" on Fig 1.7 to go to "Pre-defined Boundary Types" dialog window (see Fig 2.5)

Fig - 2.5: Window for Pre-Defined Boundary Type

22) Click "Inlets >>" button on "Pre-Defined Boundary Types" dialog window.

1. Select the "Entire boundary".
2. Select the direction in which you define the boundary condition, which is X- for our case.

3. Click "Apply".

23) Click "Outlets >>" button on "Pre-Defined Boundary Types" dialog window.

1. Select the "Entire boundary".
2. Select the direction in which you define the boundary condition, which is X+ for our case.
3. Choose flow fraction 1.0.
4. Click "Apply".

24) Click on "Walls >>" button on "Pre-Defined Boundary Types" dialog window.

1. Click "Walls at all unspecified".
2. Click "Apply".

25) Click "Internal Blockage >>" button and select the region as CYL1 and click "Apply". (See fig 2.6)

Fig 2.6 Window for Internal Blockage

26) Repeat the step 21 to select the CYL2 as Internal Blockage. Click upon "Apply". A Dialog box "Add or Replace" will pop-up. Since we have to add a different command so we need to choose option "Add as a New Command". Click upon OK Button.

This concludes the Pre-Defined BOUNDARY TYPES specification.

27) Click "Next >"to go to INITIAL & BOUNDARY CONDITIONS dialog window. (See Fig. 2.7)

Fig - 2.7: Window for Initial & Boundary Conditions

28) Click "Initial Conditions >>" button to specify the initial guesses for the primary dependent variables.

29) The corresponding screen looks like Fig.2.8. We will set the initial conditions for axial velocity U, vertical velocity V, pressure P, turbulence kinetic energy K, and dissipation rate of turbulence kinetic energy E.

Fig - 2.8: Initial Conditions screen.

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