Boundary Conditions Solidworks Flow Simulation Tutorial help you learn something

A boundary condition is required anywhere fluid enters or exits the system and can be
set as a Pressure, Mass Flow, Volume Flow or Velocity.
1 In the Flow right-click the Boundary Conditions icon

and select Insert Boundary Condition.
Simulation Analysis Tree,






2 Select the inner face of the Lid <1> part as
shown. (To access the inner face, right-click
the Lid <1> in the graphics area and choose
Select Other , hover the pointer over
items in the list of items until the inner face
is highlighted, then click the left mouse
button).

3 Select Flow Openings and Inlet Mass Flow.







4 Set the Mass Flow Rate Normal to Face to 0.5 kg/s.







5 Click OK . The new Inlet Mass Flow 1 item
appears in the Flow Simulation Analysis tree.


With the definition just made, we told Flow Simulation that at this opening 0.5
kilogram of water per second is flowing into the valve. Within this dialog box we can
also specify a swirl to the flow, a non-uniform profile and time dependent properties to
the flow. The mass flow at the outlet does not need to be specified due to the
conservation of mass; mass flow in equals mass flow out. Therefore another different
condition must be specified. An outlet pressure should be used to identify this
condition.

6 Select the inner face of the Lid <2> part as
shown. (To access the inner face, right-click
the Lid <2> in the graphics area and choose
Select Other , hover the pointer over items
in the list of items until the inner face is
highlighted, then click the left mouse button).

7 In the Flow Simulation Analysis Tree, rightclick
the Boundary Conditions icon and
select Insert Boundary Condition.

Select Pressure Openings and Static Pressure.








9 Keep the defaults in Thermodynamic Parameters,
Turbulence Parameters, Boundary Layer and Options group boxes.
10 Click OK . The new Static Pressure 1 item appears in
the Flow Simulation Analysis tree.

With the definition just made, we told Flow Simulation that at this opening the fluid exits the model to an area of static atmospheric pressure. Within this dialog box we can also set time dependent properties to the pressure.