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The Flow in Cylindrical Cyclones

✍ Scribed by Zhao, J.Q. ;Abrahamson, J.

Publisher
Curtin University of Technology
Year
2008
Tongue
English
Weight
714 KB
Volume
11
Category
Article
ISSN
0969-1855

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✦ Synopsis

Abstract

A mathematical model for the flow in a cylindrical cyclone is developed, which is an exact solution of the equation of motion for steady axisymmetric inviscid flow with or without a central β€˜air’ core, and with a specified distribution of vorticity on the streamlines at inlet boundary.

The theoretical results are compared with experimental data from Smith 1962, showing reasonable agreement for axial velocity profiles and streamline patterns but differences for angular momentum. The effect on the flow pattern of vorticity advected into the inlet stream is discussed.

The model corroborates Smith's 1962 observation that the flow in the lower part of the cyclone has unique characteristics. If the inlet pattern does not match these characteristics, then the flow makes a rapid adjustment in the upper part of the cyclone. The model also shows the commonly observed independence of tangential velocity with axial distance, but only at high swirl.

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