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  • FLUENT - Flow over an Airfoil- Step 6

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Let's see the velocity vectors along the airfoil.

Display > Vectors

Use the default setting by clicking Display.

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Enter 4 next to Scale. Enter 3 next to Skip. Click Display.
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Higher Resolution Image
Higher Resolution Image
https://confluence.cornell.edu/download/attachments/90744040/velocity%20magnitude_sm.jpg


As can be seen, the velocity of the upper airfoil surface is faster than the velocity on the lower airfoilsurface.Image Removed

(Click picture for larger image)

Tip
titleWhite Background on Graphics Window

To get white background go to:
Main Menu > File > Hardcopy
Make sure that Reverse Foreground/Background is checked and select Color in Coloring section. Click Preview. Click No when prompted "Reset graphics window?"



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newwindow
Higher Resolution Image
Higher Resolution Image
 https://confluence.cornell.edu/download/attachments/90744040/velocity%20magnitude%20leading%20edge_sm.jpg


On the leading edge, we see a stagnation point where the velocity of the flow is nearly zero. The fluid accelerates on the upper surface as can be seen from the change in colors of the vectors.Image Removed
(Click picture for larger image)
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newwindow
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https://confluence.cornell.edu/download/attachments/90744040/velocity%20magnitude%20trailing%20edge_sm.jpg


On the trailing edge, the flow on the upper surface decelerates and converge with the flow on the lower surface.

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