Mechanical Agitation Of Bed In A Motor Driven Two-Phase Fluidized Bed Particle Seeder
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International Journal of Engineering Trends and Technology (IJETT) | 
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| © 2013 by IJETT Journal | ||
| Volume-4 Issue-10 |
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| Year of Publication : 2013 | ||
| Authors : Ashwin Kannan , Sriram Kalathoor |
Citation
Ashwin Kannan , Sriram Kalathoor. "Mechanical Agitation Of Bed In A Motor Driven Two-Phase Fluidized Bed Particle Seeder". International Journal of Engineering Trends and Technology (IJETT). V4(10):4383-4387 Oct 2013. ISSN:2231-5381. www.ijettjournal.org. published by seventh sense research group.
Abstract
Solid-gas Fluidization generally pertains to particle-laden flows wherein seed particles of desired size are dispersed in a fluid volume inside a fluidized bed seeder. The present work includes numerical investigation of a simple non-reacting and non-restricted two-phase fluidized bed followed by the experimental analysis of a fabricated non-reacting two-phase fluidized bed seeder. Void fraction of the bed is maintained as 0.53 throughout the analyses owing to absence of chemical reactions. Considering the physical significance of a two phase system (namely particles and beads constituting the bed), agitation of the bed and initial turbulence required for smooth particle entrainment in the flow are of paramount importance, as their ineffectiveness adversely affects the flow physics and measures adopted explain the revamping done in this section. The major drawbacks of agglomerate formation and particle stagnation faced by a two-phase fluidized bed seeder are also relatively minimized. The following paper is presented with a view of articulating the benefits of the fabricated two-phase seeder and also the dependency of experimental analysis on the percentage of bed rise, which is obtained numerically.
References
[1] Liang Shih Fan. “Gas-liquid-solid Fluidization Engineering”. Butterworths Series in Chemical Engineering, (1989), p. 763.
[2] A Melling. “Tracer Particles and Seeding for Particle Image Velocimetry”. Measurement Science and Technology (8) (1997), pp. 1406–1416.
[3] M Glass and I M Kennedy. “An Improved Seeding Method for High Temperature Laser Doppler Velocimetry”, Combustion and Flame 29 (1977), pp. 333–335.
[4] Sriram P Kalathoor. “Solid Particle Seeding using Cyclone Gas Flow for Optical Flow Visualization: Design Parameters to be Considered”. Advances in Aerospace Science and Applications 2.1 (2013), pp. 1–6.
[5] ANSYS. Fluent User’s Guide, UDF Manual & ANSYS Documentation. Software Documentation version 13.0. Massachusetts, 2012.
[6] S Benyahia, M Syamlal, and T J O’Brien. “Extension of Hill Koch Ladd Drag Correlation over all ranges of Reynolds number and Solids volume fractions”, Powder Technology 162 (2006), pp. 166–174.
[7] D Geldart. “Types of Gas Fluidization”. Powder Technology 7.5 (1973), pp. 285–292.
Keywords
Fluidization, multi-phase flow, two-phase fluidized bed, agglomerate