How Does the Continuity Equation Apply to Changing Water Flow in Pipes?

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SUMMARY

The continuity equation, expressed as A1v1 = A2v2, is fundamental in fluid dynamics, particularly in analyzing water flow in pipes. In this discussion, the relationship between the diameter of the pipe and the velocity of the water is highlighted, emphasizing that water flow is inversely proportional to the diameter. The equation A = πd²/4 is used to calculate the cross-sectional area of the pipe, which is essential for applying the continuity equation effectively. The conclusion drawn is that understanding these relationships is crucial for solving problems related to fluid flow in varying pipe diameters.

PREREQUISITES
  • Understanding of fluid dynamics principles
  • Familiarity with the continuity equation in fluid mechanics
  • Knowledge of geometric area calculations, specifically A = πd²/4
  • Basic algebra for manipulating equations
NEXT STEPS
  • Research the applications of the continuity equation in real-world fluid systems
  • Learn about Bernoulli's principle and its relationship to fluid flow
  • Explore advanced fluid dynamics simulations using software like ANSYS Fluent
  • Study the effects of pipe diameter changes on flow rate and pressure drop
USEFUL FOR

Students in engineering or physics, fluid mechanics researchers, and professionals involved in hydraulic system design will benefit from this discussion.

dinhjeffrey
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Homework Statement




http://img41.imageshack.us/i/1721001.jpg/
#18

Homework Equations


proportions



The Attempt at a Solution


i would think water flowing is directly proportional to the diameter so i got
V1/D = V2/d
V2 = d*V1/D
but the answer is E
 
Physics news on Phys.org
Do you know the continuity equation Av= constant such that A1v1=A2v2 ?

and A = πd2/4
 

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