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Note that the Boundary Condition Type should have been automatically set to velocity-inlet. Now, the velocity at the inlet will be specified. In the Velocity Inlet menu set the Velocity Specification Method to Magnitude, Normal to Boundary, set the Velocity Magnitude (m/s) to 6.58 m/s and set the Fluctuation Velocity Algorithm to Spectral Synthesizer (this is needed to fluctuate the velocity at the inlet). Also set the Turbulence Specification Method to Intensity and Hydraulic Diameter. Set the value of Turbulent Intensity (%) to 10 % and Hydraulic Diameter (m) to 0.0127 m. Finally set the Reynolds-Stress Specification Method to K or Turbulent Intensity as shown below. Click OK to close the Velocity Inlet menu.

Outlet Boundary Condition

First, select outlet in the Boundary Conditions menu, as shown below.

Higher Resolution Image

As can be seen in the image above the Type should have been automatically set to pressure-outlet. If the Type is not set to pressure-outlet, then set it to pressure-outlet. Now, no further changes are needed for the outlet boundary condition.

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Pipe Wall Boundary Condition

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First, select pipewall in the Boundary Conditions menu, as shown below.  Image AddedHigher Resolution Image

As can be seen in the image above the Type should have been automatically set to wall. If the Type is not set to wall, then set it to wall. Now, no further changes are needed for the pipe_wall boundary condition. Also make sure that the boundary condition Type for interior-solid is Interior.

Save

In order to save your work (Click)File > Save Project as shown in the image below. Image Added

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