Answered: a) In a simple experiment, a solid with…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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a) In a simple experiment, a solid with a diameter 3 mm and density 1500 kg/m3
is released from a tall tower containing air at 25 o
C and 1 atm. The inside
diameter of the column is 0.15 m. The density of the air is assumed to be 1.2
kg/m3
.
List all your assumptions and estimate the minimum height of the tower to
make sure the particle reaches its terminal velocity before it hits the bottom of
the tower.

b) In another experiment, 5 kg of the solid particles are to be fluidized with air at 1
atm and 25 o
C. The diameter and density of the particles are 3 mm and 95 kg/m3
,
respectively.
Using the Ergun Equation, determine whether the flow of the air is laminar or
turbulent. List all your assumptions.

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