1. Discuss the significance of Reynold number for the classification of the type of fluid flow....

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Civil Engineering

1. Discuss the significance of Reynold number for theclassification of the type of fluid flow. [4]
2. Explain the terms Hydraulic Grade Line and Total Energy Line.Compare the total energy line and hydraulic grade lines for thepipe sections if there is sudden enlargement in the pipe section orsudden contraction in the pipe with the help of sketches. [8]
3. Describe the term most economical section of a channel. Explainthe condition for most economical rectangular section for an openchannel flow. [6]
4. Differentiate between the terms kinematic similarity and dynamicsimilarity. Give suitable examples to support your answer.[8]
5. Discuss the advantages of dimensional and model analysis.[4]

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3.9 Ratings (524 Votes)

51Reynolds number is used where viscosity has significant effect likelaminar flowA high Reynolds number usually indicates turbulent flowconditionsFor pipe Re2000 turbulent flowFor parallel plate Re2000 turbulent flowIn between transition flow Reynolds number depend on the density viscosity and velocity offluid in motion with respect to surfaceAt low Reynolds number viscous force is comparable to inertialeffect and flow is laminar At high Reynolds number viscous force is insignificant comparedto inertial force and turbulent flow2Hydraulic gradient line is the sum of pressure head and datum headof See Answer

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