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Showing posts with the label Fluid mechanics

Best Mechanical Engineering Books PDF Format for Students

The purpose of this article is to create a list of mechanical engineering books for the core courses of Mechanical Engineering. There are a number of books available for the meticulous study of Mechanical Engineering subjects. If we were able to study all the books of ME core courses then it would have been great ! But sadly it is not possible. And most of the times it is not possible to buy all

Important terms used in air compressors

An air compressor is a machine used to compress the air and raise its pressure. The compressed air is used for many purposes such as for operating pneumatic drills, riveters, road drills, paint spaying, in starting and supercharging of internal combustion engines, in gas turbine plants, jet engines and air motors etc. It is also utilised in the operation of lifts , rams, pumps and a variety of

Tidal Energy - Advantages and Disadvantages on electricity generation

Tidal Energy - How Tidal energy works- An introduction All flowing water carry with them kinetic energy. When such water encounters a turbine, part of the momentum of the flowing water is transferred ton to the turbine, causing it to rotate. The rotation of the turbine cam then be used to generate electricity. So for electricity generation purpose we must know about tidal energy advantages and

Bernoulli's Equation and Euler's Equation - Different terms

Bernoulli's Equation states that - For an incompressible liquid (density constant) which is flowing in a continuous stream; the total energy remains the same for all the particles, when the particle is moving from one point to another point. Mathematical expression of Bernoulli's equation: P1/w + (v2 )1/2g + z1 = P2/w +( v2)2 /2g + z1 = constant Here P1 , P2 = Pressure at points 1

Important Dimensionless Groups in Fluid Mechanics–Reynolds Number

Variables needed for getting dimensionless groups In most of the fluid phenomena the following variables may be important - Length. L - Acceleration due to gravity, g - Mass density, ρ

Similitude in Fluid Mechanics - Similarity Laws

Similitude in Fluid Mechanics There are a lot of advantages of dimensional analysis and similitude in fluid mechanics. With the application of dimensional analysis and similitude or laws of similarity, number of experiments can be reduced. Costs can be reduced by doing experiments with models of the full size apparatus. Performance of the prototype can be predicted from tests made with model.

What is the first law of thermodynamics – definition and equation

Thermodynamics if basically a science of energy. And the definition of energy varies from situation to situation. But in general we can say that energy is the cause of all changes. And this energy situation cannot be explained without thermodynamic laws. And the first law of thermodynamics is the expression which defines the principle of conservation of energy. According to the law of

Condenser Classification – De-aeration of Condenser

What is Condenser ? The primary purpose of the condenser is to condense the exhaust steam from the turbine and thus recover the high-quality feedwater for reuse in the cycle. In order for a steam power station to operate an efficient-closed cycle, the condensing plant, cooling water (CW) system, and associated pumps must extract the maximum quantity of heat from the exhaust steam of the

Advantages and Disadvantages of Hydroelectric power - Facts

What is hydroelectric power (facts) ? Let’s start with the hydroelectric power definition: In hydroelectric power plants, the potential energy of water is converted into mechanical energy which runs a generator. Hydraulic power is a naturally available renewable energy source. Power of a hydroelectric power station is given as:

How to Solve Fluid Mechanics Problems Using Moody Diagram

Hello my fellow science lovers and Mechanical Engineers. Today I am gonna solve an example problem of Fluid Mechanics or Fluid Power (Fluidics) using Very Important Moody Diagram. Before you start to look at the problem you can have a look at the following post - How to Use Moody Diagram Problem Solving Using Moody Diagram Problem - A Hydraulic oil has the kinematic viscosity of 50

An Introduction to Fluid Mechanics - Importance of Fluid mechanics for Physicist and Engineers

What is Fluid Mechanics an introduction Fluid mechanics deals with the flow of fluids. Its study is important to physicists, whose main interest is in understanding phenomena. They may, for example, be interested in learning what causes the various types of wave phenomena in the atmosphere and in the ocean, why a layer of fluid heated from below breaks up into cellular patterns, why a

Dimensional analysis - Methods of Dimensional analysis

Dimensional analysis : Dimensional analysis deals with the dimensions of physical quantities. Dimensional analysis reduces the number of variables in a fluid phenomenon by combining the some variables to form non dimensional parameters. Instead of observing the effect of individual parameters the effect of non-dimensional parameters are studied. All physical phenomena is expressed in terms of

How to read Moody Diagram

In fluid dynamics we have to solve problems which involves the use of Darcy-Weisbach friction factor f. Whether the flow is steady or transient we have to use it. If you try to solve this factor directly , much complexity is experienced. For circular pipes the problems can be solved using Swamee- Jain equation but for the other types it is really difficult. in these cases Moody diagram or Moody

Newton's law of viscosity and Newtonian fluids

Newton’s law of viscosity is given by Ƭ = µ du/dy Where, Ƭ = shear stress. µ = absolute or dynamic viscosity. du/dy = velocity gradient. Newtonian fluids: Fluids which follow this law are known as Newtonian fluids. Example of Newtonian fluids are Air, water etc. But non Newtonian fluids are tar, paste, blood, glycerin etc.

Fluid and some of its properties.

A fluid may be defined as a substance which deforms continuously when subjected to a shear stress or in other words a fluid is a substance which cannot withstand shear stress. Fluid mechanics deals with the behavior of fluids at rest and in motion. Fluids may be of liquid or gaseous forms. Liquid is practically incompressible and occupy definite volume and have free surfaces. Whereas, gaseous