CFD Use around an Aircraft Airfoil
The following picture shows the vector field occurring around an aircraft airfoil during landing, it is essential to see how the vector fields speed up and where they decrease to sustain the regions of high pressure at the bottom half of the airfoil and the regions of low pressure over the wing profile.
The following picture shows the use of the airfoil, and simulating the conditions of pressure occurring around an aircraft wind profile.
This is an excellent picture showing airfoil extensions used to increases lift during landing, its purpose is visible and how they can contribute to manipulate flows in order to increase lift during critical flight regimes.
Flow Simulation Around an Airfoil
The power of numerical simulations shown in the following movie
Deploying a Spoiler in a Simulation
An excellent simulation showing the power of CFD.
Airfoil Anatomy
The following picture shows the regions occurring on the upper surface and the regions occurring on the bottom surface, in addition to the airfoil camber line.
Airfoil thickness is illustrated in the following picture
More detailed image showing airfoil terminology, just to note the image is not done by me
Two nice pictures taken while on flight on a DC-9, thought of sharing the photos
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A funny comparison case between two types of airfoils one that is symmetrical in accordance with its camber line and the other which is not, note image not done by me.
If the velocity component on the upper surface of the airfoil is the same as the lower surface this causes the elimination of the velocity vector causing no life to be generated.
NACA airfoil
http://en.wikipedia.org/wiki/NACA_airfoil
Aircraft Online Airfoil Database
During your modeling or design process an airfoil profile is needed, from the provided data base from the following links:
3- This is an excellent link: http://aerospace.illinois.edu/m-selig/ads/coord_database.html
Airfoil Free Software
The following link can be of good use to whom are interested in making their own airfoil
http://aerofoilengineering.com/
http://www.aircraftdesigns.com/download-software.html
http://www.rc-soar.com/hardsoft/profilerev.htm
http://www.devcad.com/eng/devwing_frame.htm
http://www.designfoil.com/
http://www.aircraftdesigns.com/download-software.html
http://www.rc-soar.com/hardsoft/profilerev.htm
http://www.devcad.com/eng/devwing_frame.htm
http://www.designfoil.com/
Recommended Reading List
There are lots of books on the Theory of Wing Sections, the following title is one of the standard books that the majority of researchers go back too.
Stall Visualized During Flight
The following video shows the flow break down during flight, where the use of feathers fitted on the planes wing in o
Experiments Showing Flow Break Down Around an Airfoil
With flow break down lift will be lost therefore the aircraft will not stay airborne.
Forces Acting on Airfoil
This Youtube video shows the calculation procedure of pressure distribution around an airfoil.
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