Fluid Mechanics Group : 1

Vishwakarma GovernmentEngineering College

130170119006 Gadhavi Smith

140170119001 Asodiya Sagar

140170119002 Bhil Surendra sing

140170119003 Bimani Rajkumar

140170119004 Chaudhary Vivek

140170119005 Chaudhary Bhavesh

Introduction Of Fluid Mechanics

Definitions1. Density2. Specific Weight3. Specific Gravity4. Viscosity5. Specific volume

1. Density: It is ratio of mass of subsatnce per unite volume.

2. Specific Weight:It is ratio of Weight per unite volume. It is doneted by 𝜌=weight/𝑉𝑜𝑙𝑢𝑚𝑒3. Specific Gravity: Liquid is the ratio of it’s density of water and specific gravity of gas is ratio of density to density of air at STP.

4. Viscosity: The property of a fluid which offers resistance to the movement of one layer of fluid over another adjacent layer of the fluid.a) Co-efficient viscosity b) Kinematic viscosity v=

5. Specific Volume: It is ratio of Volume per unite mass of substance

Tyepe of Pressure1. Atmospheric Pressure2. Gauge pressure3. Vaccum pressure4. Absolute Pressure

• 1.Atmospheric Pressure:• It is pressure exerted by the air on the

surface of the earth.• Measuring device atmospheric pressure

Mercury column barometer

3. Vacuum pressure: When pressure is below the atmospheric pressure is called vacuum pressure. it’s measured by vacuum gauge.

2. Gauge Pressure: This pressure , atmospheric pressure is consider zero, and this pressure is above the atmospheric pressure. it’s measured by Pressure gauge

4. Absolute pressure: it is pressure which is measured with reference to absolute independent of the change in atmospheric pressure. It is measured above the absolute zero of pressure.