Fluid Mechanics and Machinery
CE8394 FLUID MECHANICS AND MACHINERY
UNIT I FLUID PROPERTIES AND FLOW CHARACTERISTICS
Units 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
Hydraulic and energy gradient - Laminar flow through circular
conduits and circular annuli-Boundary 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
Need for dimensional analysis – methods of dimensional analysis –
Similitude –types of similitude - Dimensionless parameters- application of
dimensionless parameters – Model analysis.
UNIT IV PUMPS
Impact 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
Classification 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.
