Question:
Aerofoils are so designed that the speed of air
Aerofoils are so designed that the speed of air
Updated On: Sep 3, 2024
- on top side is more than on lower side
- on fop side is less than on lower side,
- is same on both sides
- is turbulent
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The Correct Option is A
Solution and Explanation
The aerofils are so designed that
$ {{P}_{upper\,side}}<{{P}_{lower\,side}} $
so that the aerofils get a lifting force in upward direction. According to Bernoullis theorem, where the pressure is large, the velocity will be minimum or vice-versa.
Thus, $ {{v}_{upper\,sisde}}>{{v}_{lower\,side}} $
$ {{P}_{upper\,side}}<{{P}_{lower\,side}} $
so that the aerofils get a lifting force in upward direction. According to Bernoullis theorem, where the pressure is large, the velocity will be minimum or vice-versa.
Thus, $ {{v}_{upper\,sisde}}>{{v}_{lower\,side}} $
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Concepts Used:
Bernauli Theorem
In fluid dynamics, Bernoulli's principle states that an increase in the speed of a fluid occurs simultaneously with a decrease in static pressure or a decrease in the fluid's potential energy. The principle is named after Daniel Bernoulli who published it in his book Hydrodynamica in 1738.
