Fluid mechanics-2
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- On what factors does the upper limit of critical Reynolds number depends upon.
- Draw a graph illustrating velocity distribution in laminar and turbulent boundary layer.
- The concept of boundary layer divides the flow field into which two zones
- Show the velocity distribution for ideal and real fluids
- What is a laminar sublayer?
- What is the momentum principle?
- Define specific energy
- What do you mean by critical slope?
- What are drawdown curves?
- What is a hydraulic jump?
- From the Navier-Stokes equation derive the equation of motion at very small Reynold’s number
- What are the forces accounted for the Navier-Stokes equation?
- Define turbulent intensity.
- Name the four methods to control the separation of boundary layer.
- Estimate the longitudinal slope of the channel with depth 2.0 m having the permissible shear stress of 1.96 N/m2
- Write any two factors on which the Manning's roughness depends with reasons.
- Write down the assumptions in the Chezy’s equation.
- What are the differences between a hydraulic jump and a surge?
- Differentiate between open channel flow and closed conduit flow
- The boundary layer thickness at a distance of 1 m from the leading edge of a flat plate kept at zero angle of incidence to the direction of the flow is 0.1 cm. The velocity outside the boundary layer is 25 m/s. Find the boundary layer thickness at a distance of 4 m
- What is the velocity gradient at the separation point of boundary layer?
- Define hydraulic radius in an open channel flow
- What is the ratio of laminar sub-layer thickness to physical roughness for hydraulically rough pipe?
- In fully developed turbulent flow, if the diameter is halved without changing the flow rate, by what factor the frictional drop will change?
- Define Specific energy
- In a rectangular open channel flow what is the ratio of critical depth to its specific energy?
- In a circular channel section what is the ratio of flow depth to diameter of circular section for flow to be maximum?
- Enlist the factors on which the manning's co-efficient depends
- Define alternate depths
- When a surge is to be said a positive surge?