Fluid Mechanics – Introduction
Fluid Mechanics is that section of applied mechanics, concerned with the statics and dynamics of liquids and gases.
A knowledge of fluid mechanics is essential for the Mechanical engineer, because the majority of Mechanical processing operations are conducted either partially or totally in the fluid phase.
The handling of liquids is much simpler, much cheaper, and much less troublesome than handling solids.
Even in many operations a solid is handled in a finely divided state so that it stays in suspension in a fluid.
Fluid Statics: Which treats fluids in the equilibrium state of no shear stress
Fluid Mechanics: Which treats when portions of fluid are in motion relative to other parts.
Fluids and their Properties
In everyday life, we recognize three states of matter:
- liquid and
Although different in many respects, liquids and gases have a common characteristic in which they differ from solids: they are fluids, lacking the ability of solids to offer a permanent resistance to a deforming force.
A fluid is a substance which deforms continuously under the action of shearing forces, however small they may be.Conversely, it follows that:
If a fluid is at rest, there can be no shearing forces acting and, therefore, all forces in the fluid must be perpendicular to the planes upon which they act.
Shear stress in a moving fluid
Although there can be no shear stress in a fluid at rest, shear stresses are developed when the fluid is in motion, if the particles of the fluid move relative to each other so that they have different velocities, causing the original shape of the fluid to become distorted. If, on the other hand, the velocity of the fluid is same at every point, no shear stresses will be produced, since the fluid particles are at rest relative to each other.
- Why Is Everyone Talking About Non-Conventional Energy Sources For the Future Energy Crises? | You Will Never Believe These 5 Bizarre Truths Behind Renewable Energy Sources For the Future Energy Crises92 / 100 Powered by Rank Math SEO Non-conventional energy sources for the future
- Prime Movers | How Are Prime Movers Classified? | 10 Explanation On Why Prime Movers Is So Important.93 / 100 Powered by Rank Math SEO Prime Movers and Different
- Hydropower Plants vs Thermal Power Plants | 5 Things You Need To Know About Hydropower Plants Over Thermal Power Plants90 / 100 Powered by Rank Math SEO Hydro and thermal power