Rotational and Irrotational Flow
What is it?
Rotational flow is when the particles of fluids are all rotating about their own axis in addition to their other movement. Irrotational flow is when the individual particles are not rotating around their axis.
Give me an example!
Water flows down a drain in a counterclockwise direction in the northern hemisphere, and in a clockwise direction in the southern hemisphere. That is because of the rotation of the individual water molecules combined with the acceleration due to gravity. By contrast, an example of irrotational flow would be the flow of water over a dam, in which the water flows straight down and rotation doesn't have an effect.
Nice
ReplyDeleteCan't u give some simple example which is easy to be remembered, example like this will make the student feel like this is really tough and will bring a thought to skip this topic.
ReplyDeleteIrritation flow example is Vortex or whirlpool which develop around a drain in the bottom of a stationary tank.
DeleteNo real fluid is irroational
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Example-
ReplyDeleteWhen we rotat's a wheel by out side that is deeped in a fluid container and after it the vortex current will be increases by it. And it's all comes in rotational flow.