COMSOL 6.4 - Turbulent Flow, k-ε

Turbulent Flow, k-ε

The Fluid Properties 1 node species the domain equations and by default uses the material properties specified by the Water, liquid material selected in the previous steps.

1

In the Physics toolbar click Boundaries

and choose Inlet

2

Select Boundary 1, which represents the inlet.

3

In the Settings window for Inlet, locate the Boundary Condition section. From the list, choose Fully developed flow.

4

Locate the Fully Developed Flow section. In the Uav text field, type u_in.

1

In the Physics toolbar click Boundaries

and choose Symmetry

2

Select Boundary 3 only.

1

In the Physics toolbar click Boundaries

and choose Outlet

2

Select Boundary 28 only.

The sequence of nodes in the Model Builder under Turbulent Flow, k-ε should match the figure. The ‘D’ in the upper left corner of a node means it is a default node.

All boundaries not selected in Inlet 1, Symmetry 1, or Outlet 1 now have the default wall condition.