bernoulli's principle

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Fauziah MarrizkaGintani Ayudia M

Intan MarisIrfan Bayu RamadhanPROUDLY

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BERNOULLI’S PRINCIPLE

BERNOULLI’S PRINCIPLE

DEFINITION

FORMULA

FIGURE

APPLICATION IN DAILY LIFE

EXAMPLE OF QUESTION

DEFINITION

Bernoulli’s Principle

In a horizontal pipe, the highest fluid pressure is in the section where the flow speed is the lowest, and the lowest pressure is at the section

where the flow speed is the biggest.

This statement was proposed for the first time by Daniel Bernoulli (1700-1782), so this principle is known as

Bernoulli’s Principle.

BERNOULLI’S PRINCIPLE

DEFINITION

FORMULA

FIGURE

APPLICATION IN DAILY LIFE

EXAMPLE OF QUESTION

FORMULA

The work by force F1 on the pipe with cross-sectional area A1 are:

So that will be obtained:

The work by F2 in the pipe with cross-sectional area A2 are:

W2 is negative marked (--) because the direction of force (F 2) against the direction of motion (transfer) fluid. So, we can write

like this:

Equation (1)

Equation (2)

Equation (3)

That equation above is called the Bernoulli’s equation

BERNOULLI’S PRINCIPLE

DEFINITION

FORMULA

FIGURE

APPLICATION IN DAILY LIFE

EXAMPLE OF QUESTION

FIGURE

WHO IS

THAT ?

Daniel Bernoulli was a Swiss physicist and a mathematician. One of the important thoughts in physics is the Bernoulli

equation on the tube current used for the measurement of flow velocity due to the pressure.

His chief work is his Hydrodynamique (Hydrodynamica) that published in 1738. In Hydrodynamica (1738) he laid the basis for the kinetic theory of gases, and applied the idea to explain

Boyle's law.He worked with Euler on elasticity and the development of the Euler-Bernoulli beam equation. Bernoulli's principle is of

critical use in aerodynamics.

BERNOULLI’S PRINCIPLE

DEFINITION

FORMULA

FIGURE

APPLICATION IN DAILY LIFE

EXAMPLE OF QUESTION

APPLICATION IN DAILY LIFE

Determining the velocity and debit of water spray in perforated tank

Venturimeter

Carburetor

Perfume Sprayer

Lift Force of airplane’s Wings

Pitot Tube

Determining the velocity and debit of water spray in

perforated tank

APPLICATION IN DAILY LIFE

Determining the velocity and debit of water spray in perforated tank

Venturimeter

Perfume Sprayer

Lift Force of airplane’s Wings

Pitot Tube

Carburetor

.Venturimeter

Venturimeter is an instrument for efficiently measuring fluid flow rate in a piping system

With Manome

ter

Without Manomet

er

.Venturimeter

Venturimeter is an instrument for efficiently measuring fluid flow rate in a piping system

With Manome

ter

Without Manomet

er

With Manome

ter

1

'22

2

1

1

A

A

ghv

Without Manomet

er

1

22

2

1

1

A

A

ghAQ

APPLICATION IN DAILY LIFE

Determining the velocity and debit of water spray in perforated tank

Venturimeter

Perfume Sprayer

Lift Force of airplane’s Wings

Pitot Tube

Carburetor

Carburetor

APPLICATION IN DAILY LIFE

Determining the velocity and debit of water spray in perforated tank

Venturimeter

Perfume Sprayer

Lift Force of airplane’s Wings

Pitot Tube

Carburetor

Perfume

Sprayer

APPLICATION IN DAILY LIFE

Determining the velocity and debit of water spray in perforated tank

Venturimeter

Perfume Sprayer

Lift Force of airplane’s Wings

Pitot Tube

Carburetor

Pitot Tube

Pitot tube is a pressure

measurement instrument

used to measure fluid flow velocity

gh

v'2

APPLICATION IN DAILY LIFE

Determining the velocity and debit of water spray in perforated tank

Venturimeter

Perfume Sprayer

Lift Force of airplane’s Wings

Pitot Tube

Carburetor

Lift Force of Airplane’s Wings

Lift Force(influence of the form of plane)

Movement Force(by a machine of plane)

Weight Force(influence of the gravitation)

Resistor Force(friction between the

airplane and air)

Lift force of airplane > weight of airplane

Speed of Airplane must be bigger for enlarge lift force of airplane

Size of airplane must be bigger so that lift force of airplene is bigger

21

2221 2

1vvAFF

Section of Airplane’s Wings

BERNOULLI’S PRINCIPLE

DEFINITION

FORMULA

FIGURE

APPLICATION IN DAILY LIFE

EXAMPLE OF QUESTION

EXAMPLE OF QUESTION

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