Applied Fluid Mechanics — Summer 2018

What is open channel? Why bed slope is provided in open channel?

Explain various types of open cahnnels with sketch.

What do you mean by most economical channel section? Derive the condition for trapezoidal channel of best section.

What is specific energy head? Draw specific energy diagram.

Explain under what condition hydraulic jump can occure.

Aconcrete lined trapezoidal channel has to discharge 600 cumecs. The side slopes are 1 in 1 and the bed slope is 1 in 4000. The permissible velocity is 2.5 m/s . Determine the bottom width and the depth of the channel. Take Manning’s N = 0.014

Derive the non uniform flow equation and explain back water curve and draw down curve.

Explain Hagen-Poiseuille theory.

Describe relation between shear stress and velocity gradient.

What is couette flow? Derive an expression of velocity and shear stress for couette flow

Explain different types of shear theories for turbulent flow.

Write advantages and disadvantages of shear theories.

Arough pipe of 30 cm diameter carries water. If the mean point velocity and the velocity gradient at a distance of cm from pipe wall are 2 m/sec and 12.5 sec-1 respectively, determine the average height of roughness projection, wall shear stress, friction factor and mean velocity of flow. Take ρ =1000 kg/m3 and κ(kappa) = 0.4

What do you mean by pipes in series and pipes in parallel? How the loss of head is determined in both systems.

Explain separation of boundary layer.

Explain boundary layer theory and derive Karman’s momentum equation for boundary layer.

Explain the various types of similarities exist between model and its prototype.

Explain Buckingham method of dimensional analysis

Prove that the resistance Fof sphere of diameter d moving at a constant speed v through a fluid of density ρ and dynamic viscosity µ may be expressed as µ2 vdρ F = ------ ϕ ( ------- ) ρ µ

Explain main components of a Pelton wheel.

Describe component part of centrifugal pump and explain priming

Explain performance characteristic curves for turbines with help of sketches

Explain the working of a single stage centrifugal pump.

Write short note on cavitation in turbine and pump

Classify the different types of turbine and explain all in brief.