Rotational and Irrotational Flow

Rotational Flow - Definition The flow in which the fluid particle while flowing along the stream line rotates about its own axis is called as Rotational Flow

Irrotational Flow - Definition The flow in which the fluid particle while flowing along the stream line does not rotates about its own axis is called as Rotational Flow

Rotational flow–In General If you travel in a closed loop, you add up all the components of the fluid velocity vectors along your path and if the end result is not zero, then the flow is called as Rotational flow

Irrotational flow–In General If you travel in a closed loop, you add up all the components of the fluid velocity vectors along your path and if the end result is zero, then the flow is called as Irrotational flow

Rotational flow–In Tech If each fluid particle has an angular velocity about its mass centre , then the flow is considered to be in the rotational flow

Irrotational flow–In Tech If the velocity is inversely proportional to the radius r, the two axes rotates in opposite direction

Normal Test to find the Flow Rotational Flow Irrotational Flow To test whether the flow has a rotational component, you can put a small object in the flow and let the flow carry it. If the small object spins, it is called as Rotational Flow To test whether the flow has a rotational component, you can put a small object in the flow and let the flow carry it. If the small object does not spins, it is called as Irrotational Flow

Rotational Flow-Tech Definition-Video

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