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Fluid Mechanics for Chemical

Colebrook equation for friction factor in turbulent flow is given by, f-0.5 = -4 loge [(ε/D) + (1.26/NRe √F). It reduces to Nikuradse equation for a value of (ϵ/D) equal to __________________?

Fluid Mechanics for Chemical /
Colebrook equation for friction factor in turbulent flow is given by, f-0.5 = -4 loge [(ε/D) + (1.26/NRe √F). It reduces to Nikuradse equation for a value of (ϵ/D) equal to __________________?

A. 0
B. 1
C. ∞
D. 0.5

Colebrook equation for friction factor in turbulent flow is given by, f-0.5 = -4 loge [(ε/D) + (1.26/NRe √F). It reduces to Nikuradse equation for a value of (ϵ/D) equal to __________________? Read More »

Fluid Mechanics for Chemical

Which of the following equations applies to the fluid flow through a packed bed for very large Reynolds number ?

Fluid Mechanics for Chemical /
Which of the following equations applies to the fluid flow through a packed bed for very large Reynolds number ?

A. Fanning equation
B. Blake-Plummer equation
C. Hagen-Poiseuille equation
D. Kozeny-Carman equation

Which of the following equations applies to the fluid flow through a packed bed for very large Reynolds number ? Read More »

Fluid Mechanics for Chemical

The energy loss in flow through Venturimeter is less than that through flow nozzle, because in case of a flow nozzle, the ?

Fluid Mechanics for Chemical /
The energy loss in flow through Venturimeter is less than that through flow nozzle, because in case of a flow nozzle, the ?

A. Length is shorter
B. Throat diameter is more
C. Sudden expansion of flow in the downstream occurs
D. Distance between the throat and the inlet is more

The energy loss in flow through Venturimeter is less than that through flow nozzle, because in case of a flow nozzle, the ? Read More »

Fluid Mechanics for Chemical

At what value of crank angle (roughly), no flow of water from or into the air vessel takes place in case of a double acting reciprocating pump ?

Fluid Mechanics for Chemical /
At what value of crank angle (roughly), no flow of water from or into the air vessel takes place in case of a double acting reciprocating pump ?

A. 40° and 140°
B. 45° and 60°
C. 90° and 80°
D. 20° and 120°

At what value of crank angle (roughly), no flow of water from or into the air vessel takes place in case of a double acting reciprocating pump ? Read More »

Fluid Mechanics for Chemical