Methods of Dimensional Analysis – theteche.com
There are two methods of dimensional analysis used.
Rayleigh's method
Buckingham π-Theorem
Rayleigh's Method
In Rayleigh's method, the expression is determined for a variable depending upon maximum three or four variables only. If...
One, Two and Three Dimension Flow
One dimensional flow is the type of flow in which the flow characteristics such as velocity, pressure, density, temperature etc. are the function of time and one space co-ordinate only.
Mathematically,
u=f(x) ;...
Pressure Measurement by Pressure Gauges
Most of the conventional pressure gauges are of a mechanical type. These gauges embody on elastic element which deflects under the action of the applied pressure. This movement mechanically magnified and...
Pressure Measurement By Manometers
Manometers is the device which is used for measuring the pressure at a point in a fluid by balancing the column of fluid by the same or another column of liquid.
Simple...
Surface Tension | Definition and Examples
The surface tension is due to cohesion between particles at the free surface. Due to molecular attraction, liquids have properties of cohesion and adhesion. Cohesion is due to the force of...
Basic Thermodynamics of Refrigerators and Heat Pumps
The ideal body having large thermal energy capacity which either continuously supplies or absorbs the infinite amount of heat without changing its temperature is called thermal energy reservoir or heat reservoir.
If...
Statements of Second Law of Thermodynamics
The second law of thermodynamics is stated in two ways.
Kelvin Planck statement and
Clausius statement.
Kelvin Planck Statement
The Kelvin Planck statement can be expressed as "It is impossible for any device...
Steady Flow Energy Equation (SFEE)
Consider an open system through in which the working substance flows as a steady rate as shown in figure. The working substance entering the system at (1) and leaving the system...
First Law of Thermodynamics – Applications to Open Systems
In any systems, the rate of flow of working fluid is constant with respect to time, then the system is known as steady flow system. In this system, the mass of...
Second Law of Thermodynamics – theteche.com
According to the first law of thermodynamics, all forms of energy are equivalent. One form of energy can be converted into other form and any process is possible as long as...