s of di amo er velocity of ensity of the air under these « owing relation DW

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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Information Momentum Balance
Ap: Projected area of the particle (AD²/4).
CD: Drag coefficient
opproach velocity uo
Fb: Buoyancy force
FD: Drag force
Fg: Gravitational Force
m: Mass of the particle.
Projected orea Ap
Fluid streomlines
Vp: Volume of the particle (V, = (m/Pp)
v:: Terminal velocity of the falling particle,
z: Direction along the length
p: Density of the fluid.
Pp: Density of the solid particle.
Transcribed Image Text:Ap: Projected area of the particle (AD²/4). CD: Drag coefficient opproach velocity uo Fb: Buoyancy force FD: Drag force Fg: Gravitational Force m: Mass of the particle. Projected orea Ap Fluid streomlines Vp: Volume of the particle (V, = (m/Pp) v:: Terminal velocity of the falling particle, z: Direction along the length p: Density of the fluid. Pp: Density of the solid particle.
4.4 Determine the velocity of the solid particles of diameter 0.0003 m in a pneumatic
conveyor at length of 10 m. The initial velocity of the particle is zero and
superficial velocity of air is 10 m/s. The density of the particle is 900 kg/m³. Air
is fed at 25°C and 1 atm and the viscosity of air under these conditions is 1.8 × 103 kg/
m-s. Neglect the wall effects. Use the following relation to determine Cp:
24
(1+0.15RE")
C, =
Re,
0.687
Transcribed Image Text:4.4 Determine the velocity of the solid particles of diameter 0.0003 m in a pneumatic conveyor at length of 10 m. The initial velocity of the particle is zero and superficial velocity of air is 10 m/s. The density of the particle is 900 kg/m³. Air is fed at 25°C and 1 atm and the viscosity of air under these conditions is 1.8 × 103 kg/ m-s. Neglect the wall effects. Use the following relation to determine Cp: 24 (1+0.15RE") C, = Re, 0.687
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