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A weather balloon is launched into the atmosphere by

Fluid Mechanics | 2nd Edition | ISBN: 9780071284219 | Authors: Yunus A. Cengel, John M. Cimbala ISBN: 9780071284219 39

Solution for problem 11p Chapter 4

Fluid Mechanics | 2nd Edition

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Fluid Mechanics | 2nd Edition | ISBN: 9780071284219 | Authors: Yunus A. Cengel, John M. Cimbala

Fluid Mechanics | 2nd Edition

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Problem 11p Problem 11PA weather balloon is launched into the atmosphere by meteorologists. When the balloon reaches an altitude where it is neutrally buoyant, it transmits information about weather conditions to monitoring stations on the ground (Fig. P11-10C). Is this a Lagrangian or an Eulerian measurement? Explain.
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ANSWER:

Step 1:-

Before answering we must know the meaning of lagrangian and eulerian measurement.If we can describe the entire flow of a liquid by knowing the detailed history of each constituent particle of the liquid, then it’s called lagrangian measurement.Here we need to know the initial conditions as coordinates, momenta and densities.In eulerian measurement, rather than following each fluid particle we concentrate more on the evolution of the flow properties at each point of coordinates and time.It’s hard to apply the conservation laws here but mathematically it’s much simpler.

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Chapter 4, Problem 11p is Solved
Textbook: Fluid Mechanics
Edition: 2
Author: Yunus A. Cengel, John M. Cimbala
ISBN: 9780071284219

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A weather balloon is launched into the atmosphere by