FLUID MECHANICS PRELIMS

HEAT

Energy transferred between a system due to temperature difference

Enthalpy

Sum of internal energy and flow work

Specific Weight

Weight per unit volume

Specific Gravity

Dimentionless ratio of a fluid density

Specific Volume

Volume per unit mass

Density

Amount of mass per volume

Temperature

Degree of coldness or hotness

Mechanics

Oldest physical science

study of how fluids (liquids and gases) behave when they are at rest (fluid statics) or in motion (fluid dynamics), and how they interact with forces.

Kinematic Viscosity

Ratio of absolute viscosity to density

Capillarity

Phenomenon due to rise or depression

Statics

Branch of mechanics that deals with forces acting on a body at rest

Surface tension

Property of fluid that develops at interface

Pressure

Force exerted

Work

Product of Force and Distance

Stress

Internal resistance per unit

Liquid

State of matter with definite volume

Viscosity

Fluid resistance to floe

Kinematics

Describes motion of objects

Properties

Characteristics of materials

Barometer

Measure of atmospheric pressure

Modulus of elasticity

Measures stiffness

Anemometer

Measures windspeed

Stiffness

Fluid resistance to change in volume per pressure