Wednesday, August 4, 2021

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 dimensional flow

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) ;...
Bellows pressure gauge

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...
Classification of Manometers

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

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...
Refrigerator

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...
Kelvin planck statement

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)

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...
Thermodynamics - Paddle wheel mechanism

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...