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QUESTION: 1

For laminar flow in pipes the momentum correction factor is

Solution:

QUESTION: 2

For turbulent flow in pipes the momentum correction factor is

Solution:

QUESTION: 3

For laminar flow is pipe, the kinetic energy correction factor is

Solution:

QUESTION: 4

Which one of the following is correct for the velocity distribution across a section of two fixed parallel plates having viscous flow, where t is the distance of parallel plate

Solution:

QUESTION: 5

What would be the shear stress distribution across a section of two fixed parallel plates kept at a distance t apart and having a viscous flow

Solution:

QUESTION: 6

An incompressible fluid (kinematic viscosity, 7.4 x 10^{-7} m^{2}/s, specific gravity, 0.88) is held between two parallel plates. If the top plate is moved with a velocity of 0.5 m/s while the bottom one is held stationary, the fluid attains a linear velocity profile in the gap of 0.5 mm between these plates; the shear stress in Pascals on the surface of top plate is

Solution:

Shear stress

QUESTION: 7

The maximum velocity of a one-dimensional incompressible fully developed viscous flow, between two fixed parallel plates, is 6 ms^{-1}. The mean velocity (in ms^{-1}) of the flow is

Solution:

Ratio of maximum velocity to average velocity for one dimensional incompressible flow between two fixed plate is

QUESTION: 8

The shear stress developed in a lubricant oil viscosity 9.81 poise, filled between two parallel plates 1 cm apart and moving with relative velocity of 2 m/sec is

Solution:

QUESTION: 9

The drag coefficient for laminar flow varies with reynolds number (Re) as

Solution:

QUESTION: 10

The transition Reynolds number for flow over a flat plate is 5 x 10^{5}. What is the distance from the leading edge at which transition will occur for flow of water with a uniform velocity of 1 m/s (for water the kinematic viscosity v = 0.86 x 10^{-6}m^{2}/s)

Solution:

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