Bernoulli's principle 3d animation
Δημοσιεύτηκε στις 24 Οκτ 2015
Bernoulli's principle 3d animation
This
is an important principle involving the movement of a fluid through a
pressure difference. Suppose a fluid is moving in a horizontal direction
and encounters a pressure difference. This pressure difference will
result in a net force, which by Newton's 2nd law will cause an
acceleration of the fluid. The fundamental relation,which is known as
Bernoulli's principle. This is very similar to the statement we
encountered before for a freely falling object, where the gravitational
potential energy plus the kinetic energy was constant (i. e., was
conserved).
Bernoulli's principle thus says that a rise (fall) in
pressure in a flowing fluid must always be accompanied by a decrease
(increase) in the speed, and conversely, if an increase (decrease) in ,
the speed of the fluid results in a decrease (increase) in the pressure.
This is at the heart of a number of everyday phenomena. As a very
trivial example, Bernouilli's principle is responsible for the fact that
a shower curtain gets ``sucked inwards'' when the water is first turned
on. What happens is that the increased water/air velocity inside the
curtain (relative to the still air on the other side) causes a pressure
drop. The pressure difference between the outside and inside causes a
net force on the shower curtain which sucks it inward. A more useful
example is provided by the functioning of a perfume bottle: squeezing
the bulb over the fluid creates a low pressure area due to the higher
speed of the air, which subsequently draws the fluid up. This is
illustrated in the following figure.
This
is an important principle involving the movement of a fluid through a
pressure difference. Suppose a fluid is moving in a horizontal direction
and encounters a pressure difference. This pressure difference will
result in a net force, which by Newton's 2nd law will cause an
acceleration of the fluid. The fundamental relation,which is known as
Bernoulli's principle. This is very similar to the statement we
encountered before for a freely falling object, where the gravitational
potential energy plus the kinetic energy was constant (i. e., was
conserved).
Bernoulli's principle thus says that a rise (fall) in
pressure in a flowing fluid must always be accompanied by a decrease
(increase) in the speed, and conversely, if an increase (decrease) in ,
the speed of the fluid results in a decrease (increase) in the pressure.
This is at the heart of a number of everyday phenomena. As a very
trivial example, Bernouilli's principle is responsible for the fact that
a shower curtain gets ``sucked inwards'' when the water is first turned
on. What happens is that the increased water/air velocity inside the
curtain (relative to the still air on the other side) causes a pressure
drop. The pressure difference between the outside and inside causes a
net force on the shower curtain which sucks it inward. A more useful
example is provided by the functioning of a perfume bottle: squeezing
the bulb over the fluid creates a low pressure area due to the higher
speed of the air, which subsequently draws the fluid up. This is
illustrated in the following figure.
Κατηγορία
Άδεια
- Τυπική άδεια YouTube
Δεν υπάρχουν σχόλια:
Δημοσίευση σχολίου