# A Description of Fluid Mechanics

Pages: 6 (818 words) Published: December 22, 2010
WHAT IS FLUID MECHANICS ?

FLUIED:

Any thing whose particles can move easily from one place to another that means shape can be easily changed upon the application of negligible force.

MECHANICS:

Study of response of bodies upon the application of force.

FLUID MECHANICS :

Fluid mechanics may be defined as the branch of engineering science which deal with behavior of fluids under the condition of rest and motion.

FLUID MECHANICS DIVIDED IN 3 PARTS

1 STATICS

2 KINAMETICS

3 DYNAMICS

STATICS:

Study of incompressible fluids under static conditions is called hydrostatic and that branch dealing compressible static gasses is termed as aero-statics.

KINAMETICS:

It deal with velocities acceleration and the pattern of flow only forces or energy, velocity and acceleration .

DYNAMICS:

It deals with the relation b/w velocities acceleration of fluid with the force or energy causing them.

WRITE DOWN THE PROPERTIES OF FLUIED?

The matter can be classified on the basis of spacing b/w the molecules of matter as

1 SOLID STATE:

2 FLUIED STATE.

I LIQUID STATE

ii GASES STATE

In solid molecules are very closed spaced where as liquids. The spacing b/w the different molecules is relatively large and in gases the spacing b/w molecules is still large

Its means the intermolecular cohesive forces are large in solids, smaller in gases and extremely small in gases and on account of this fact solids posses compact and regional form, liquids molecules can move freely with in the liquids mass and the molecules of gases have greater freedom of movement so that the gases fill the container completely in which they are placed.

A solid can resist tensile compressive and shear stresses up to a certain limit where a fluid has no tensile strength or very little of it and it can resist the compressive forces only when it kept in a container.

When a fluid is subjected to a shearing it deforms continuously as long as forces apply. The amount of shearing stress in a depends on the magnitude of state of deformation of the fluid element.

Liquid and gases in habit different chacrterestics.

The liquid under ordinary condition are quite different to compress where as gases can be compressed much widely under the action of external pressure.

WRITE DOWN THE CHARTER OF FLUIDS:

Fluid is a substance which is capable of following.

1. It has no definite shape but confirms the shape of container vessels

2. Even a smaller amount of shear force exerted on a fluid will cause it to undergo a deformation which continuous as long as the force continuous to applied.

CLASIFICATION OF FLUID:

1) LIQUD 2) GAS 3)VAPOUR

1)IDEAL FLUIDS - 2)REAL FLUIDS

1 LIQUIDS:

Liquid Is Type Of Fluid Having Definite volume which varies only slightly with temp and pressure

Liquid have bulk elastic modulus when under compression and will store up energy in same manner as solids.

As the contraction of volume of liquids under contraction is extremely it is usually ignored and liquid is assumed as incompressible.

All known liquids evaporated at narrow pressure above zero depending on the temp.

LIQUID AND THERE PROPERTIES:

A liquid can be easily distinguished, solid or gas.

A solid as a definite shape which a liquid takes the shape of vessel...