Page History

...

Now let's practice with a simple 2D model of a flocculation tank with one baffle, following the steps described below.

1. Download the case and data file and put them into the same directory.
2. Execute FLUETN 2ddp, click File>Read>Case & Data... and read the downloaded case and data file.
3. Plot the contour of energy dissipation rate: click Display>Contours, choose Contours of Turbulence and Turbulence Dissipation Rate(Epsilon) in the pull down menu and click display. A new window will appear with the contours of the Epsilon in the default color scale, normally too wide for the range of our interest. To change the color scale, in the Contours dialogue box, uncheck Auto Range under Options, set the Max to be 0.005 and click display. This should give a contour of energy dissipation rate with a reasonable color scale. Save the contour as a picture. (You can paste a screen shot in PowerPoint and save it as a picture.)
4. Now try solve the case you have read in again and see if you can get the same results:
   1. Click Solve>Initialize. Under the pull down menu under Compute from, choose inlet. The Initial Values should already be set-up correctly. Click Init and then Close at the bottom.
   2. Now click Solve>Iterate, set the Number of Iterations to be 5000 and click Iterate. The solution should be converged within several minutes. Plot the contour of energy dissipation again from your solution to compare with the downloaded data. Do you get the same results?

...

Whenever running into a how-to question, you can always find answers in FLUENT/Gambit documentation (both in PDF and HTML form), which includes complete guides on FLUENT, UDF , text interface commands(some features are not included in the graphical interface), etc.

http://www.fluentusers.com is another useful resource, which has tutorials, case studies, etc. Any student can get a free account using http://www.fluent.com/software/university/usc_student_form.htm and with it access the documentation at the USC as well as the CFD Learning Center. It generally takes a day or two for the password to be sent out after the request.