Fluid Mechanics Sheet 7
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1) Question.
A fluid of kinematic viscosity flows through a 8 cm diameter pipe. The maximum velocity for laminar flow will be -
Answer. -
2) Question.
The Prandtl mixing length is -
Answer. -
3) Question.
The discharge of a liquid of kinematic viscosity through a 8 cm diameter pipe is . The type of flow expected is -
Answer. -
4) Question.
The distance from pipe boundary, at which the turbulent shear stress is one-third the wall shear stress, is -
[ R= radius of pipe]
Answer. -
5) Question.
The ratio of average velocity to maximum velocity for steady laminar flow in circular pipes is -
Answer. -
6) Question.
The value of friction factor 'f' for smooth pipes for Reynolds number is approximately equal to -
Answer. -
7) Question.
For hydro-dynamically smooth boundary, the friction coefficient for turbulent flow is -
Answer. -
8) Question.
In which of the following the friction drag is generally larger than pressure drag?
Answer. -
9) Question.
With the same cross-sectional area and immersed in same turbulent flow, the largest total drag will be on -
Answer. -
10) Question.
In case of an airfoil, the separation of flow occurs -
Answer.
