Bernoullis theorem

Question 1

How does Bernoulli’s theory apply in a venturi

Answer 1

The venturi tube has a narrow section in the middle

This causes the air to speed up as it passes through the restriction

when the kinetic energy (velocity) increases the potential energy (pressure) decreases

Question 2

What is Bernoulli theorem

Answer 2

When energy is neither added to nor taken from fluid in motion the potential energy (pressure) decreases when the kinetic energy (velocity) increases

Question 3

How does bernoulli’s principle apply to an aerofoil

Answer 3

An aerofoil is shaped similar to the inside of a Venturi, therefore it has a similar effect on air that passes over it.

The air over the top of the aerofoil travels faster and has a lower pressure