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Chapters
1. Introduction
2. Adding Wind Speeds and Directions
3. Characteristics of Fluids
4. Pressure
5. Continuity Equation
6. Bernoulli's Equation
7. Streamlines and Streamtubes
8. Flows With Friction
9. Transition and Turbulence
10. Separation
11. Drag of Blunt and Streamlined Bodies
12. Drafting
13. Golf Balls, Cricket Balls, and Tennis Balls
14. Lift and Stall
15. Useful Links
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Bernoulli's Equation

The Bernoulli equation states that,


where
  • points 1 and 2 lie on a streamline,
  • the fluid has constant density,
  • the flow is steady, and
  • there is no friction.
  • Although these restrictions sound severe, the Bernoulli equation is very useful, partly because it is very simple to use and partly because it can give great insight into the balance between pressure, velocity and elevation.

    How useful is Bernoulli's equation? How restrictive are the assumptions governing its use? Here we give some examples.

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