give me limitations of bernoullis thereom.
And application of the principle..
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Limitations :
1. The above equation has been derived by assuming that the velocity of every element of the liquid across any cross-section of the pipe is uniform. Practically,it is not true. The elements of the liquid in the innermost layer have the maximum velocity. The velocity of the liquid decreases towards the walls of the pipe. Therefore, we should take into account the mean velocity of the liquid.
2. While deriving Bernoulli's equation, the visous drag of the liquid has not been taken into consideration. The viscous drag comes into play, when a liquid is in motion.
3.Bernoulli's equation has been derived on the assumption that there appears no loss of energy, when a liquid is in motion. In fact, some kinetic energy is converted into heat energy and a part of it is lost due to shear force.
4. If the liquid is flowing along a curved path, the energy due to centrifugal force should also be taken into consideration.
Application:
Bernoulli's principle can be applied to many everyday situations. For example, this principle explains why airplane wings are curved along the top and why ships have to steer away from each other as they pass. The pressure abovethe wing is lower than below it, providing lift from underneath the wing.
Thank you
1. The above equation has been derived by assuming that the velocity of every element of the liquid across any cross-section of the pipe is uniform. Practically,it is not true. The elements of the liquid in the innermost layer have the maximum velocity. The velocity of the liquid decreases towards the walls of the pipe. Therefore, we should take into account the mean velocity of the liquid.
2. While deriving Bernoulli's equation, the visous drag of the liquid has not been taken into consideration. The viscous drag comes into play, when a liquid is in motion.
3.Bernoulli's equation has been derived on the assumption that there appears no loss of energy, when a liquid is in motion. In fact, some kinetic energy is converted into heat energy and a part of it is lost due to shear force.
4. If the liquid is flowing along a curved path, the energy due to centrifugal force should also be taken into consideration.
Application:
Bernoulli's principle can be applied to many everyday situations. For example, this principle explains why airplane wings are curved along the top and why ships have to steer away from each other as they pass. The pressure abovethe wing is lower than below it, providing lift from underneath the wing.
Thank you
navyasingh12:
Thnk u
Wlcm dear:D
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