mini study guide for the Bernoulli principle,Venturi effect, & Coanda effect )

Question 1

the bernoulli’s principle describes the relationship between ____ and _____ of a moving fluid or gas.

Answer 1

velocity and pressure

Question 2

bernoulli’s principle describes flow through a ______.

Answer 2

constriction

Question 3

if the fluids velocity is high then the pressure exerted on the wall of the tube will be _____.

Answer 3

low

Question 4

if the fluids velocity is low, then the pressure exerted on the walls of the tube will be _______.

Answer 4

high

Question 5

the venturi effect is an application of the?

Answer 5

bernoulli principle

Question 6

describe the venturi effect?

Answer 6

as air flow in a tube moves past the point of constriction, the pressure at the constriction decreases (Bernoulli) and if the pressure inside the tube falls bellow atmospheric pressure then air is entrained into the tube (Venturi)

Question 7

name 3 examples of the venturi effect?

Answer 7

jet ventilator
venturi mask
nebulizer

Question 8

what is the coanda effect? describe it?

Answer 8

jet flow attaches itself to a nearby surface and continues to flow along that surface even when the surface curves away from the initial jet direction

Question 9

what are the two examples of conanda effect?

Answer 9

wall hugging jet of mitral regurgitation and water that follows the curve of a glass.
Other clinical examples of the Coanda effect include the unequal blood flow at a bifurcation of a blood vessel due to an atheroma and the unequal filling of a pair of alveoli due to mucus plugs in the conducting airways