Unit 1
Elementary concepts – density, specific weight, specific gravity, viscosity – dynamic and kinematic viscosity – surface tension, capillarity, vapour pressure, compressibility – Compressible and incompressible fluids; Concept of gauge and absolute pressure, measurement of pressure using manometers of different types. Hydrostatic force on plane and curved surfaces, center of pressure; buoyancy and stability of submerged and floating bodies;
Flow types – Unsteady, Steady and non-uniform, laminar and turbulent flows – Reynolds number; Ideal flow – rotational and irrotational, stream function, potential function – Velocity vectors; Path line, streak line and stream line; Derivation of continuity and momentum equation for steady three dimensional flows – Application of one dimensional steady flow; circulation and vorticity; Laminar flow between parallel plates – Taylor-Coutte flow and Poiseulle flow; Flow in closed conduits Laminar flow through circular pipe – Shear stress and velocity profiles; pressure gradient, Hagen-Poiseulle’s equation; Power required to overcome pressure drop; Velocity profile in turbulent flows;
Two dimensional flows – Boundary layer; Boundary layer equation; Blasisus solution for boundary layer flow; boundary layer separation and its control.