09CE242 FLUID MECHANICS AND MACHINERY

Credits: 3:1:0

Objectives

The purpose of this course is to learn the Fluid properties and fundamentals of Fluid

statics and fluid flow

To introduce the concepts of flow measurements and flow through pipes

To introduce the concepts of momentum principles

To impart the knowledge on pumps and turbines

Unit I Fluid Properties

Dimensions and Units – Density – Specific weight - Specific gravity – Viscosity – surface

tension – Capillarity – Compressibility – Vapour pressure.

Fluid Statics:

Pressure relation – Pascal’s law –Measurement of pressure – Manometers and Gauges, Forces on

plane and curved surfaces – Total pressure and centre of pressure.

Unit II Equations Of Fluid Flow

Types of flow – Stream line – Stream tube – Control volume – Continuity equation – one

dimensional and three dimensional flow – velocity potential and stream function – Free and

forced vortex flow – Energy equation – Euler’s equation in one dimensional form – Bernoulli’s

equation.

Unit III Flow Measurements

Orifices - Venturi meter – Orifice meter – Pitot tube – Weirs and Notches.

Flow Through Pipes:

Loss of energy in pipes – Major energy loss - Minor energy losses – pipes in series and parallel

– power transmission through pipes – Syphon – Water hammer (Definition)

Unit IV

Impulse momentum equation- Impact of Jets-plane and curved- stationary and moving plates.

Pumps: Positive displacement pumps - reciprocating pumps - operating principles -slip -

indicator diagram - separation- air vessels. centrifugal pumps - operation - velocity triangles -

performance curves - Cavitation - Multi staging - Selection of pumps.

Unit V Turbines

Turbine classification-working principles -Pelton wheel, Francis, Kaplan turbines -

Velocity triangles - Similarity laws - Specific speed - Governing of turbines- Surge tanks-

Miscellaneous pumps - Jet pump, Gear oil pump,submersible pump – Principle.

Text Books:

1.Modi, P.N. & Seth, S.M., “A Text book of Fluid Mechanics and Hydraulic Machines”,

Standard Book House, New Delhi, 2007.

2.Rajput, R.K.,” A Text book of Fluid Mechanics and Hydraulic Machines” , S.Chand and

Co., New Delhi,1998

Reference Books

1.Bansal, R.K., Fluid Mechanics and Hydraulic Machines, Laxmi Publications, New

Delhi, 2005.

2.Som,S.R, & Biswas, “Introduction to Fluid Mechanics and Fluid Machines”, Tata

McGraw Hill, 1998.

3.Agarwal, S.K., Fluid Mechanics and Machinery, Tata Mc Graw Hill Co., 1997.

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