Flywheel and Governor are used to control the speed fluctuations of an internal combustion engine. But these fluctuations take place in two ways: 1) During a cycle (due to variation of torque on the crankshaft) 2) Over a no of cycle (due to the variation of load on the engine) In first case, speed fluctuations

What enthalpy indicates?

Thursday, 20 April 2017 by

The total energy of a compressible system consists of kinetic, potential and internal energy but in case of flowing fluid, the fluid possesses another form of energy which is called as flow energy (P/ρ). Then the total energy of a flowing fluid on the unit mass basis becomes eflowing = u + (P/ρ) + ke

Forecasting Models

Saturday, 08 April 2017 by

Forecasting can be termed as prediction of future sales or demand of a product. It is a projection based upon the past data and the art of human judgment. The survival of any organization depends upon how well they are able to project the demand in future.

Queuing Models

Wednesday, 05 April 2017 by

The goal of Queuing model is achievement of an economical balance between the cost of providing service and the cost associated with the wait required for that service This model is applied to service oriented organizations like machine repair shop, production shop, food chain, restaurant etc.

Heat Transfer Through Fins

Tuesday, 28 March 2017 by

Convection heat transfer between a hot solid surface and the surrounding colder fluid is governed by the Newton’s cooling law which states that “the rate of convection heat transfer is directly proportional to the temperature difference between the hot surface and the surrounding fluid and is also directly proportional to the area of contact or

Due to molecular attraction, liquids possess certain properties such as cohesion and adhesion. Cohesion means inter-molecular attraction between molecules of the same liquid. Adhesion means attraction between the molecules of a liquid and the molecules of a solid boundary surface in contact with the liquid. The property of cohesion enables a liquid to resist to

Fluid Properties

Monday, 20 March 2017 by

A fluid is a substance which is capable of flowing or deforming under the action of shear force (however the small force may be). Examples: liquids, gases and vapors.

Heat Exchangers

Monday, 20 March 2017 by

Heat Exchanger is an adiabatic steady flow device in which two flowing fluids exchange or transfer heat between themselves due to a temperature difference without losing or gaining any heat from the ambient atmosphere.

Transient heat conduction

Monday, 20 March 2017 by

Generally, the temperature of a body varies with time as well as position. In heat conduction under steady conditions, the temperature of a body at any point does not change with time. Thus, it can be concluded that this type of heat conduction is a function of position only. In heat conduction under unsteady state

Theories of failure

Monday, 20 March 2017 by

Theories of failure are those theories which help us to determine the safe dimensions of a machine component when it is subjected to combined stresses due to various loads acting on it during its functionality.