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Fluid Kinematics



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Vortex Flows

Vortex flow

When fluid flows in a circular paths where the streamlines of a flow field are concentric circles is called vortex flow.

Solid Body Rotation

For solid body or forced vortex rotation, the velocity is proportional to the radius of the streamline. In terms of polar coordinate, image and image.

The vorticity of the fluid element in polar coordinate above the z-axis is

image

image

Irrotational vortex.

For irrotational or free vortex rotation, the velocity is inversely proportional to the radius of the streamline. In terms of polar coordinate, image and image.

The vorticity of the fluid element in polar coordinate above the z-axis is

image

image


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ID: 100200006 Last Updated: 2/22/2010 Revision: 0

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