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Jonathan Kennedy
EGR188
Quiz 6
Due: 02/27/2012
#20
(a) if the Reynolds number is 500, what is the coefficient of drag?
Coefficient of Drag: 0.6
(b) if the coefficient of drag is 2, what is the Reynolds number?
Reynolds Number: 30
(c) if the fluid flows around a sphere of diameter 1 centimeter traveling at a velocity of
2.45 centimeters per second, determine the drag force of the particle in units of newtons.
(Hint: determine the Reynolds number of the system, then find the coefficient of drag,
then calculate the force.)
Reynolds Number: 29.76
Coefficient of Drag: 2
Force in Newtons: 5.2282 newtons
(d) if a coefficient of drag of 100 is produced, what is the diameter of the particle?
Assume the fluid is moving at 1 centimeter per second. (Hint: determine the Reynolds
number of the system, then calculate the diameter.)
Coefficient of Drag: 100
Reynolds Number: 1.2
Diameter: 9.8792 centimeters
#21
(a) if the Reynolds number is 3,000, what is the coefficient of drag?
Coefficient of Drag: 4
(b) if the coefficient of drag is 5, what is the Reynolds number?
Reynolds Number: 8
(c) if MEK flows around a sphere of diameter 0.5 centimeter travelling at a velocity of
1.5 centimeters per second, determine the drag force on the particle in units of newtons.
(Hint: determine the Reynolds number of the system, then find the coefficient of drag,
then calculate the force.)
Reynolds number: 140.4069
Coefficient of Drag: 0.9
Force in Newtons: .1601 newtons
1
Jonathan Kennedy
EGR188
Quiz 6
Due: 02/27/2012
(d) if a coefficient of drag of 20 is produced, what is the diameter of the particle?
Assume the fluid is moving at 15 centimeters per second. (Hint: determine the Reynolds
number of the system, then calculate the diameter.)
Coefficient of Drag: 20
Reynolds Number: 3
Diameter: .0011 centimeters
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