SimCafe

Space shortcuts

Child pages
  • Flow over an Airfoil - Verification & Validation

Versions Compared

Old Version 40

changes.mady.by.user user-f1580

Saved on

compared with

New Version Current

changes.mady.by.user Rajesh Bhaskaran

Saved on

Key

  • This line was added.
  • This line was removed.
  • Formatting was changed.

...

Validation

To validate our data, we will take a compare the data from actual experiment.can compare values to actual experiment. The drag coefficient coming from our inviscid model, however, cannot be compared to actual data. The drag coefficient in our model is theoretically zero.  

 

Unrefined Mesh

Refined Mesh

Experimental Data

Lift CoeffientCoefficient

0.6315

0.6670

0.6630

Drag Coefficient

0.0122

0.00630.0090

n/a

Below is a graph displaying the comparing Coefficient of Pressure along the airfoil for the experimental data and the CFD simulation. The data is from Gregory & O'Reilly, NASA R&M 3726, Jan 1970.

...

As we can see from the table and the graph, the CFD matches the data fairly well. There are inaccuracies from factors such as our assumption that the flow is inviscid, but we still managed to extract some meaningful information from the simulation. Click here to go to an exercise which demonstrates a more thorough approach to modeling this flow problem, which involves turning on the turbulence model equations and using a more refined mesh provided by NASA. 

Go to Exercises

Go to all FLUENT Learning Modules