NDLI: Estimations of the maximum tangential velocity V $_{θm}$ in the vortex core region and also the mean rotational velocity V $_{oi}$ near the concave wall surface in the returned flow type cyclone dust collector

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Estimations of the maximum tangential velocity V $_{θm}$ in the vortex core region and also the mean rotational velocity V $_{oi}$ near the concave wall surface in the returned flow type cyclone dust collector

Content Provider	Springer Nature Link
Author	Ogawa, Akira
Copyright Year	2010
Abstract	There are many types of cyclone dust collectors for separating the fine solid and dust particles from gases in the various industries and also in the home used purposes. For estimating the power loss and the collection efficiency, one of the most important factors is the maximum tangential velocity V $_{θm}$ in the vortex core region in the cyclone body. In order to determine V $_{θm}$ by the simple method, it is useful to apply the mechanical balance of the angular momentum fluxes under the assumption of Ogawa combined vortex model which is composed of the quasi-forced vortex in the vortex core region and also the quasi-free vortex surrounded the vortex core region and also under the assumption of the introduction of equivalent length Heq corresponding to the cone spaces of the cyclone body and the dust bunker. On the other hand, the mean rotational velocity V $_{oi}$ near the concave wall surface is also estimated by the mechanical balance of angular momentum fluxes with the moment of viscous friction force. For confirming the general applications of the obtained equations, the returned flow types cyclones changed the throat diameter D3 are designed. The material of the cyclone is the transparent acrylic resin. Therefore the inner surface of the cyclone body can be regarded as smooth surface. The comparisons of the measured velocities V $_{θm}$ and V $_{oi}$ by a cylindrical Pitot tube are shown in good agreement with those of the proposed equations. The above stated results are described in detail.
Starting Page	553
Ending Page	560
Page Count	8
File Format	PDF
ISSN	10032169
Journal	Journal of Thermal Science
Volume Number	19
Issue Number	6
e-ISSN	1993033X
Language	English
Publisher	SP Science Press
Publisher Date	2010-12-07
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Cyclone Dust Collector Maximum Tangential Velocity Mean Rotational Velocity Angular Momentum Flux Equivalent Length Surface Frictional Force Ogawa Combined Vortex Model Reynolds Number Engineering Thermodynamics, Heat and Mass Transfer Engineering Fluid Dynamics Classical Continuum Physics
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics

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Estimations of the maximum tangential velocity Vθm in the vortex core region and also the mean rotational velocity Voi near the concave wall surface in the returned flow type cyclone dust collector

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