PTU Syllabus | ME-206 FLUID MECHANICS-I
ME-206 FLUID MECHANICS-I
Purpose
This is a core subject, basic knowledge of which is required by all the engineers. This course aims at developing an understanding of the behaviour of fluids in motion or at rest and the subsequent effects of the fluids on the boundaries. The study of this subject will develop analytical abilities related to fluid flow.
Instructional Objectives
The students should be able to have:
1. Conceptual understanding of fluids and their properties.
2. Understanding of fluid statistics, fluid kinematics and fluid dynamics.
3. Basic knowledge of dimensional analysis and similitude.
4. Understanding of laminar and turbulent flows, and flow measurement. Detailed Contents
1. Fluid and their properties : Concept of fluid, difference between solids, liquids and gases; ideal and real fluids; capillarity, vapour pressure, compressibility and bulk modulus; Newtonian and non- Newtonian fluids.
2. Fluid Statics: Concept of pressure, Pascal’s law and its engineering applications, Hydrostatic paradox.
Action of fluid pressure on a plane (horizontal, vertical and inclined) submerged surface, resultant force and center of pressure, force on a curved surface due to hydrostatic pressure.
Buoyancy and flotation, stability of floating and submerged bodies, metacentric height and its determination, periodic time of oscillation, pressure distribution in a liquid subjected to constant horizontal/ vertical acceleration, rotation of liquid in a cylindrical container.
3. Fluid Kinematics : Classification of fluid flows, velocity and acceleration of fluid particle, local and convective acceleration, normal and tangential acceleration, streamline, path line and streak line, flow rate and discharge mean velocity, continuity equation in Cartesian and cylindrical, polar coordinates.
Rotational flows, rotation velocity and circulation, stream and velocity potential functions, flow net.
4. Fluid Dynamics : Euler’s equation, Bernoulli’s equation and steady flow energy equation; representation of energy changes in fluid system, impulse momentum equation, kinetic energy and momentum correction factors, flow along a curved streamline, free and forced vortex motions.
5. Dimensional Analysis and Similitude : Fundamental and derived units and dimensions, dimensional homogeneity. Rayleigh’s and Buckingham’s Pi method for dimensional analysis. Dimensionless numbers and their significance, geometric, kinematic and dynamic similarity, model studies.
Laminar and Turbulent Flows: Flow regimes and Reylods number, critical velocity and critical Reynolds number, laminar flow in circular cross- section pipes. Turbulent flows and flow losses in pipes, Darcy equation, minor head losses in pipes and pipe fittings, hydraulic and energy gradient lines.
6. Flow Measurement: Manometers, pitot tubes, venturi meter and orifice meters, orifice, mouthpieces, notches and weirs, rotameter.
Books
1. Fluid Mechanics and Fluid Power Engineering by D.S. Kumar : S.K. Kataria and Sons Publishers.
2. Mechanics of Fluids by Massey BS; Van Nostrand Reinhold Co.
3. Fluid Mechanics by Douglas JF, Gasiorek JM, Swaffield JP; Poitman
4. Fluid Mechanics by Streetes VL and Wylie EB; Mcgraw Hill Book Co.
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