Author: John Singleton and Rajesh Bhaskaran, Cornell University Problem Specification |
Click here for the FLUENT 6.3.26 version. |
Your current Workbench Project Page should look comparable to the following image. Regardless of whether you downloaded the mesh and geometry files or if you created them yourself, you should have checkmarks to the right of Geometry and Mesh.
The question mark to the right of right of the Setup cell is normal and indicates that the Setup process has not yet been completed.
Double click on Setup in the Workbench Project Page which will bring up the FLUENT Launcher. When the FLUENT Launcher appears change the options to "Double Precision", and then click OK as shown below.The Double Precision option is used to select the double-precision solver. In the double-precision solver, each floating point number is represented using 64 bits in contrast to the single-precision solver which uses 32 bits. The extra bits increase not only the precision, but also the range of magnitudes that can be represented. The downside of using double precision is that it requires more memory.
https://confluence.cornell.edu/download/attachments/118475240/DoublePrecision_Full.png |
First, the mesh will be checked to verify that it has been properly imported from Workbench. In order to obtain the statistics about the mesh (Click) Mesh > Info > Size, as shown in the image below.
Then, you should obtain the following output in the Command pane.
The mesh that was created earlier has 3,000 elements(50 x 60). Note that in FLUENT elements are called cells. The output states that there are 3,000 cells, which is a good sign. Next, FLUENT will be asked to check the mesh for errors. In order to carry out the mesh checking procedure (Click) Mesh > Check as shown in the image below.
You should see no errors in the Command pane. Now, that the mesh has been verified, the mesh display options will be discussed. In order to bring up the display options (Click) General > Mesh > Display as shown in the image below.
The previous step should cause the Mesh Display window to open, as shown below. Note that the Named Selections created in the meshing steps now appear.
https://confluence.cornell.edu/download/attachments/118771050/MeshDispMenu_Full.png |
In this section the various solver properties will be specified in order to obtain the proper solution for the flat plate boundary layer flow. First, the Energy Model parameters will be specified. In order to open the Energy Model Options Models > Energy-Off > Edit..., as shown in the following image.
https://confluence.cornell.edu/download/attachments/118771050/EnergyModel_Full.png |
https://confluence.cornell.edu/download/attachments/118771050/ViscModel_Full.png |
Now, the properties of the fluid that is being modeled will be specified. The properties of the fluid were specified in the Problem Specification section. In order to create a new fluid (Click) Materials > Fluid > Create/Edit... as shown in the image below.
https://confluence.cornell.edu/download/attachments/118771050/CreateFluid_Full.png |
https://confluence.cornell.edu/download/attachments/118771050/Mat1_Full.png |
At this point the boundary conditions for the four Named Selections will be specified. The boundary condition for the inlet will be specified first.
In order to start the process (Click) Boundary Conditions > inlet > Edit... as shown in the following image.
https://confluence.cornell.edu/download/attachments/118771050/InletBC_Full.png |
https://confluence.cornell.edu/download/attachments/118771050/SetInletBC_Full.png |
First, (Click) Boundary Conditions > outlet > Edit... as shown in the image below.
https://confluence.cornell.edu/download/attachments/118771050/editout_Full.png |
The Boundary Condition Type should have been automatically set to wall, as shown in the image below.
https://confluence.cornell.edu/download/attachments/118771050/WallBCC_Full.png |
For the far_field, set the Boundary Condition Type to symmetry, as shown below.
https://confluence.cornell.edu/download/attachments/118771050/symmbc_Full.png |