## 36.8. Boundary Definition

The Boundary Definition panel is used to set boundary conditions for the remaining surfaces in the simulation.

- The list box shows the existing interfaces. You can right-click and select New to create a new interface or Delete to delete an existing one.

- The Flow Specification options (Wall Influence On Flow) vary with the boundary type. For details, see Flow Specification/Wall Influence on Flow.

CFX-Pre uses the information gained from domain interfaces and region specification to automatically create the required boundary condition locations, in addition to any template boundary configuration that you have chosen. You can check the definition for each one by clicking on a boundary and viewing the properties displayed. You can change the properties of any of the automatic boundary conditions. You should ensure that you set the parameter values for the inlet and outlet boundary conditions because they will assume default values.

Release 18.2 - © ANSYS, Inc. All rights reserved.