Define Outlets
Use the Outlet tool define boundary conditions on surfaces where flow is exiting the domain.
- 
                Select the surfaces on which to apply the boundary
                    condition in the following ways:
                - While in the Flow ribbon, select surfaces, then right-click and select Assign Outlet from the context menu.
- From the Flow ribbon, click the
                                Outlet tool. 
 Figure 1.Select surfaces. 
 
- 
                In the dialog, input values for each tab.
                - Momentum
- Setting
 
- 
                From the guide bar, execute the command in the following
                    ways:
                - Click  to confirm your selection and remain in the
                            tool. to confirm your selection and remain in the
                            tool.This allows you to continue creating instances and helps you visualize and edit instances with the legend. 
- Click  to confirm your selection and exit the
                        tool. to confirm your selection and exit the
                        tool.
 
- Click