Syllabus Advanced Fluid Mechanics and Hydraulic Machines - (301005a) Credit Examinationscheme 03 End semesterexam : 70 Marks Unit III: Unsteady Flow Introduction to flow through sharp crested circular orifice under constant head, types of unsteady flow, flow through openings under varying head, fluid compressibility, celerity of elastic pressure wave through fluid medium. Water hammer phenomenon, rise of pressure due to water hammer, surge tanks and its function.(Chapter - 3) Unit IV: Impact of Free Jets Impulse momentum equation, force exerted by jet on stationary and moving flat plate (normal & inclined to the jet), flat plates mounted on periphery of a wheel, force exerted by jet on symmetrical stationary curved vane at centre, on unsymmetrical stationary curved vane tangentially at one of the tips. Force exerted by jet on symmetrical moving curved vane at the centre, symmetrical curved vanes mounted on periphery of a wheel, force exerted by jet on unsymmetrical moving curved vane tangentially at one of the tips, torque exerted on a wheel with radial curved vanes.(Chapter - 4) Unit V: Hydraulic Turbines Elements of hydroelectric power plants, heads and efficiencies and classification of turbines Pelton wheel turbine: component parts and its working, work done and efficiencies, working proportions, design, multiple jet Pelton wheel (introduction). Francis turbine: component parts and its working, work done and efficiencies, working proportions, design, draft tube theory, cavitation in hydraulic turbines, governing of turbines. Performance of turbine, prediction of performance in terms of unit quantities and specific quantities, specific speed, characteristic curves, model testing of turbines, selection of turbines.(Chapter - 5) Unit VI: Centrifugal Pumps Component parts, working, types of centrifugal pumps, work done by impeller, head of pump, losses and efficiencies, minimum starting speed, loss of head due to increased or reduced flow, diameters of impeller and pipes, pumps in series and parallel, suction lift, net positive suction head, cavitation in centrifugal pump, introduction to submersible pumps. Performance centrifugal pump: characteristic curves, specific speed, model testing.(Chapter - 6)
