bernoulli's principle
DESCRIPTION
Persamaan BernoulliTRANSCRIPT
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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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