FLUID MECHANICS- Basic Concepts and Definitions

 I.  FLUID MECHANICS

I.1 Basic Concepts & Definitions:

Fluid Mechanics - Study of fluids at rest, in motion, and the effects of fluids on boundaries.

Note: This definition outlines the key topics in the study of fluids:

     (1)    Fluid statics (fluids at rest), (2) Momentum and energy analyses (fluids in motion), and  (3)  viscous effects and all sections considering pressure forces (effect of fluids on boundaries).

Fluid - A substance which moves and deforms continuously as a result of an applied shear stress.

The definition also clearly shows that viscous effects are not considered in the study of fluid statics.

Two important properties in the study of fluid mechanics are:

Pressure   and   Velocity