Running Fluid Simulation Studies—Creo Simulation Live
You can run the following types of fluid simulation studies:
• Internal—Flows like that of fluid through a pipe.
• External—Flows similar to movement of air around a vehicle, aircraft, or spacecraft in a wind tunnel.
To solve a fluid simulation study you must define the following minimum inputs:
• A fluid domain—This is a closed volume through which the fluid flow is simulated. The fluid domain can be an internal volume of a part or assembly, an enclosure around a part or assembly, a part, or a body.
• Fluid material—Some fluid materials are available in the Materials Library. You can also create a new fluid material from the Materials dialog box.
• Boundary or thermal conditions—If only boundary conditions are specified then the following minimum boundary conditions must be specified:
◦ One inlet boundary condition (flow velocity, inlet pressure, mass flow, swirl inlet)
◦ One outlet boundary condition (outlet pressure)
• Transient or Steady State—A study is steady-state by default. In a steady state fluid study the properties of a fluid at a given point do not change over time. For example, the velocity of the fluid is different at different points in the fluid, but is constant for a given point.
Workflow: Running a Fluid Simulation Study
The following is the workflow for setting up and running a fluid simulation study:
1. Open a model and click Live Simulation.
2. Click > 
Fluid Simulation Study.
Fluid Simulation Study.3. Select one of the following options:
◦ Click the arrow next to Study. Ensure the Transient Mode check box is cleared, to create a steady-state fluid study.
◦ Click the arrow next to Study. Select the Transient Mode check box to create a transient fluid study. Click Time Limit and specify an end time for the study, or use the default option of No limit.
4. A fluid simulation study with a default name is created and listed in the Simulation Tree. For a transient thermal study the string (transient) is automatically appended to the study name.
5. Define the fluid domain for the study. You can use an existing internal or external volume created in Creo Parametric or create a volume in Creo Simulation Live.
To create an internal volume in Creo Simulation Live, click > 
Internal Volume to open the Internal Volume tab and create an internal volume. See the related link “To Define an Internal Volume” at the end of this topic for the detailed procedure.
Internal Volume to open the Internal Volume tab and create an internal volume. See the related link “To Define an Internal Volume” at the end of this topic for the detailed procedure.To create an external or enclosure volume, click > 
Enclosure Volume to open the Enclosure Volume tab and create an enclosure volume feature. See the related link “To Define an Enclosure Volume” at the end of this topic for the detailed procedure.
Enclosure Volume to open the Enclosure Volume tab and create an enclosure volume feature. See the related link “To Define an Enclosure Volume” at the end of this topic for the detailed procedure.6. Click 
Fluid Domain. The Fluid Domain Definition dialog box opens. If you already have an internal volume feature or enclosure volume feature defined in the model, it appears in the References collector of the Fluid Domain Definition dialog box. If the model contains more than one internal or enclosure volume feature then they are not selected automatically.
Fluid Domain. The Fluid Domain Definition dialog box opens. If you already have an internal volume feature or enclosure volume feature defined in the model, it appears in the References collector of the Fluid Domain Definition dialog box. If the model contains more than one internal or enclosure volume feature then they are not selected automatically.You can select alternative volumes from the Model Tree or from the graphics window. A body, part, component, or a closed quilt can be a fluid domain Your selection appears in the References collector. Select a volume and right-click Remove to remove a selected volume that you do not want to use in the study.
7. Right-click the fluid domain in the Simulation Tree and select Edit Materials. The Materials dialog box opens. Select a suitable fluid material from the Material Directory folder.
If none of the available fluid materials are suitable, click > > on the Materials dialog box and create a new fluid material.
Click OK to assign the material to the fluid domain.
When you create the fluid volume using any method other than the Enclosure Volume feature, you can use the Remove Internal Geometry check box to include or exclude geometry that is enclosed by the fluid domain, from the study.
8. Assign boundary or thermal conditions for the fluid domain. A surface can have both thermal and boundary conditions.
 | • You can define a maximum of one thermal and one boundary condition per surface. • You can have either a slip symmetry boundary condition, or a thermal boundary condition defined for a surface, but not both. |
To model fluid temperature fields, you can specify the fluid temperature at inlets and any of the other thermal boundary conditions for walls.
9. Click 
Simulate to start the simulation study. You can see the results in the graphics window updating almost instantaneously. Results of a fluid study change over time. The results legend displays the duration for which the simulation has run.
Simulate to start the simulation study. You can see the results in the graphics window updating almost instantaneously. Results of a fluid study change over time. The results legend displays the duration for which the simulation has run.