## Fluid dynamics

In physics , **fluid** dynamics is a sub-discipline of **fluid** mechanics that deals with **fluid** flow —the natural science of fluids ( liquids and gases ) in motion. It has several subdisciplines itself, including aerodynamics (the study of air and other gases in motion) and hydrodynamics

**wikipedia.org**| 2011/10/1 3:59:26

## History of fluid mechanics

The history of **fluid** mechanics , the study of how fluids move and the forces on them, dates back to the Ancient Greeks. Contents 1 Antiquity 1.1 Archimedes 1.2 The Alexandrian school 1.3 Sextus Julius Frontinus 2 Middle Ages 2.1 Islamicate physicists 2.2 Islamicate

**wikipedia.org**| 2010/9/25 10:48:37

## Category:Fluid mechanics

This category has the following 7 subcategories, out of 7 total. D [ + ] Discrete-phase flow (2 P) F [ + ] **Fluid** dynamicists (2 C, 127 P) [ + ] **Fluid** dynamics (29 C, 452 P, 4 F) F cont. [ + ] **Fluid** power (2 C, 1 P) [ + ] **Fluid statics** (1 C, 1 P) N [ + ] Non

**wikipedia.org**| 2010/9/26 17:16:11

## Fluid pressure

motions create only negligible changes in the pressure. Such conditions conform with principles of **fluid statics** . The pressure at any given point of a non-moving (static) **fluid** is called the hydrostatic pressure . Closed bodies of **fluid** are either "static," when the **fluid** is not moving

**wikipedia.org**| 2010/9/26 15:14:10

## Statics

point. Equilibrium Equations The static equilibrium of a particle is an important concept in **Statics** . A particle is in equilibrium only if the resultant of all forces acting on the particle is equal to zero. In a rectangular coordinate system the equilibrium equations can be represented

**wikipedia.org**| 2011/4/3 22:14:12

## Fluid

In physics , a **fluid** is a substance that continually deforms (flows) under an applied shear stress , no matter how small. Fluids are a subset of the phases of matter and include liquids , gases , plasmas and, to some extent, plastic solids . In common usage, **fluid** " is often used as

**wikipedia.org**| 2011/4/21 1:18:06

## Friction

Kinetic energy is converted to heat whenever motion with friction occurs, for example when a viscous **fluid** is stirred. Another important consequence of many types of friction can be wear , which may lead to performance degradation and/or damage to components. Friction is a component of the

**wikipedia.org**| 2011/10/4 13:13:17