CE8394 FLUID MECHANICS AND MACHINERY L T P C 4 0 0 4
OBJECTIVES The properties of fluids and concept of control volume are studied The applications of the conservation laws to flow through pipes are studied. To understand the importance of dimensional analysis To understand the importance of various types of flow in pumps. To understand the importance of various types of flow in turbines.
UNIT I FLUID PROPERTIES AND FLOW CHARACTERISTICS 12Units and dimensions- Properties of fluids- mass density, specific weight, specific volume, specific gravity, viscosity, compressibility, vapor pressure, surface tension and capillarity. Flow characteristics – concept of control volume - application of continuity equation, energy equation and momentum equation.
UNIT II FLOW THROUGH CIRCULAR CONDUITS 12Hydraulic and energy gradient - Laminar flow through circular conduits and circular annuliBoundary layer concepts – types of boundary layer thickness – Darcy Weisbach equation –friction factor- Moody diagram- commercial pipes- minor losses – Flow through pipes in series and parallel.
UNIT III DIMENSIONAL ANALYSIS 12Need for dimensional analysis – methods of dimensional analysis – Similitude –types of similitude - Dimensionless parameters- application of dimensionless parameters – Model analysis.
UNIT IV PUMPS 12Impact of jets - Euler’s equation - Theory of roto-dynamic machines – various efficiencies– velocity components at entry and exit of the rotor- velocity triangles - Centrifugal pumps– working principle - work done by the impeller - performance curves - Reciprocating pump- working principle – Rotary pumps –classification.
UNIT V TURBINES 12Classification of turbines – heads and efficiencies – velocity triangles. Axial, radial and mixed flow turbines. Pelton wheel, Francis turbine and Kaplan turbines- working principles - work done by water on the runner – draft tube. Specific speed - unit quantities – performance curves for turbines – governing of turbines.
TOTAL: 60 PERIODS
OUTCOMES:Upon completion of this course, the students will be able to Apply mathematical knowledge to predict the properties and characteristics of a fluid. Can analyse and calculate major and minor losses associated with pipe flow in piping networks. Can mathematically predict the nature of physical quantities Can critically analyse the performance of pumps Can critically analyse the performance of turbines.
TEXT BOOK:1. Modi P.N. and Seth, S.M. "Hydraulics and Fluid Mechanics", Standard Book House, New Delhi 2013.
REFERENCES:1. Graebel. W.P, "Engineering Fluid Mechanics", Taylor & Francis, Indian Reprint, 2011
2. Kumar K. L., "Engineering Fluid Mechanics", Eurasia Publishing House(p) Ltd., New Delhi 2016
3. Robert W.Fox, Alan T. McDonald, Philip J.Pritchard, “Fluid Mechanics and Machinery”, 2011.
4. Streeter, V. L. and Wylie E. B., "Fluid Mechanics", McGraw Hill Publishing Co. 2010
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