Anna University , Chennai
Department of B.E-Aeronautical Engg , B.E Mechanical Engg , B.E Automobile Engg
Third Semester
CE6451 Fluid Mechanics and Machinery
(Regulation 2013 )
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content:
UNIT-1
PROPERTIES OF FLUIDS
Fluid mechanics
Fluid statics
Fluid kinematics
Fluid dynamics
Density or mass density
Specific weight or weight density
Specific volume
Specific gravity or relative density
Viscosity
Kinematic viscosity
Objectives
FLUID PROPERTIES AND FLOW CHARACTERISTICS
Compressibility and bulk modulus
Cohesion
Surface tension
Hollow surface
Liquid jet
Capillarity
Expression for capillary rise
Expression for capillary fall
Vapour pressure and cavitation
KINEMATICS OF FLOW AND IDEAL FLOW
Kinematics
Two methods
1. Lagrangian methods
2. Eulerian method
Types of fluid flow
1. Steady and unsteady flow
2. Uniform and non-uniform flow
3. Laminar and tubulant flow
4. Compressible and incompressible flow
5. Rotational and irrotational flow
6. One, two and three-dimensional flows
Continuity equation
Problems
Basic equation of compressible flow
1. Continuity equation
2. Bernoullis equation
3. Momentum equation
4. Equation of state
Assumption
Application
Problems
Control volume
UNIT-2
FLOW THROUGH CIRCULAR CONDUITS
Flow of viscous fluid through circular pipe
Hagen poiseuille formula
Hydraulic gradient and total energy line
Flow through pipe
1. Laminar flow
2. Turbulent flow
Loss of energy in pipes
Energy losses
1. Major energy
2. Minor energy
Darcy-weisbach equation
Problems
Reynold’s number
Loss of head due to sudden enlargement
Loss of head due to sudden construction
Loss of head due to an obstruction in a pipe
Flow through pipe in series
Boundary layer flow
Moody diagram
Turbulent boundary layer
Laminar sub-layer
Laminar boundary layer
Boundary layer thickness
Displacement thickness
UNIT-3
DIMENSIONAL AND MODEL ANALYSIS
Dimensional analysis
Fundamental dimension
Secondary quantities
Dimensional homogeneity
Methods of dimensional analysis
1. Rayleigh’s method
2. Buckingham’s pie method
Method of selecting repeating variables
Model
Prototype
Similitude
Types
1. Geometric similarity
2. Kinematic similarity
3. Dynamic similarity
Types of forces acting in moving fluid
Dimensionless numbers
Model laws
Classification of models
1. Undistorted models
2. Distorted models
Advantages
Scale ratios for distorted models
1. Scale ratio for velocity
2. Scale ratio for area of flow
3. Scale ratio for discharge
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