Fluid Dynamics - Definitions

Question 1

Density

Answer 1

Mass per volume

Question 2

Specific Gravity

Answer 2

Compares the density of one substance with that of another, compared with water at 4°C or air at 20°C

Question 3

Pascals law

Answer 3

When a pressure is applied to a contained liquid the liquid exerts an equal pressure at right angles to the container that encloses it

Question 4

Viscosity

Answer 4

The resistance of a fluid to a change in shape or movement (how thick a liquid is)

Question 5

Fluid resistance

Answer 5

It is the friction between a solid body moving through a liquid or a gas also known as fluid friction

Question 5

Streamlining

Answer 5

Decreasing the amount of restrictive force of fluid friction

Question 6

Static pressure

Answer 6

Sum of gravity, applied force and atmospheric pressure

Question 7

Atmosphere pressure

Answer 7

Density of air dependent on altitude

Question 7

Ambient pressure

Answer 7

Pressure in the area immediately surrounding the object

Question 9

Bernoulli’s principle

Answer 9

All matter contains potential/kinetic energy

Question 11

Fluid pressure

Answer 11

Pressure exerted by a column of liquid is determined by the height of the column and is not affected by volume

Question 12

Head

Answer 12

The vertical height of the column of liquid whose weight would produce that pressure