MEC203 Chapter 9 Definitions

Question 1

Define Buoyancy force

Answer 1

The upward force exerted by a fluid on a body completely or partially immersed in it in a gravitational field. The magnitude of the buoyancy force is equal to the weight of the fluid displaced by the body

Question 2

Define Archimedes’ principle

Answer 2

A body immersed in a fluid will experience a “weight loss”” in an amount equal to the weight of the fluid it displaces

Question 3

Define Volume expansion coefficient

Answer 3

Variation of the density of a fluid with temperature at constant pressure

Question 4

Define Grashof number

Answer 4

Represents the natural convection effects in momentum equation