Radial Velocity Variation in a Designed Stairmand’s High Efficiency Cyclone

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Author(s) Oriaku E.C | Agulanna C.N | Edeh J. C | Okpe B.N
Pages 402-410
Volume 5
Issue 7
Date July, 2015
Keywords Cyclone, Radial Velocity, Velocity Profile, Drag Force And Flour Particles..

Abstract

Velocity distribution among other non physical parameters in cyclone dust collectors have been subjected to series of studies. The velocity profile is characterized by three velocity components: tangential, axial and radial. The tangential velocity being the dominant velocity component with established obvious effect on particle collection efficiency has been widely investigated with little or no serious attention to other components. Theoretical studies have revealed the significance of the radial velocity though the least component and its effect in drag force contribution. Experimental investigation was carried out to establish the radial velocity profile in a designed and constructed Stairmands High efficiency cyclone. This radial velocity component was directly measured with a hotwire air anemometer 28mm from the cyclone axis at ten sections along the cyclone at varying cyclone inlet velocity range of 9.15 - 24.08m/s on-load conditions. The result despite the uncertainties in the measurement, showed a consistent trend described by polynomial of the third degree for all the ten speeds considered. Result further showed that radial velocity was fairly constant along the cylindrical sections of the cyclone but increases towards the centre and along the conical section with a drop at the terminal section of the cyclone. This tendency for the maximum radial velocity at end of conical section and subsequent decrease affirms that radial velocity aids particle settling and collection.

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