Step 6: Boundary Conditions

Boundary Conditions

1.   Set the velocity and turbulence boundary conditions at the inlet ( inlet).

Boundary Conditions inlet Edit...

(a)   Enter 22.6 m/s for Velocity Magnitude.

(b)   Select Intensity and Hydraulic Diameter from the Specification Method drop-down list in the Turbulence group box.

(c)   Retain the default value of 10% for the Turbulent Intensity.

(d)   Enter 42 mm for the Hydraulic Diameter.

(e)   Click OK to close the Velocity Inlet dialog box.

2.   Set the boundary conditions at the outlet ( outlet).

Boundary Conditions outlet Edit...

(a)   Retain the default setting of 0 for Gauge Pressure.

(b)   Select Intensity and Hydraulic Diameter from the Specification Method drop-down list in the Turbulence group box.

(c)   Enter 5% for the Backflow Turbulent Intensity.

(d)   Enter 42 mm for the Backflow Hydraulic Diameter.

(e)   Click OK to close the Pressure Outlet dialog box.

3.   Retain the default boundary conditions for the walls ( substrate-wall and wall).