Numerical analysis of particulate jet generated by free falling particles

This paper is concerned with the numerical simulation of the particulate jet generated by solid particles falling from a slit orifice into an unbounded quiescent air. A two-dimensional vortex method, proposed for the analysis of particle-laden free turbulent flow in prior papers, is employed for the...

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Bibliographic Details
Published inPowder technology Vol. 145; no. 2; pp. 123 - 130
Main Author Uchiyama, Tomomi
Format Journal Article
LanguageEnglish
Published Lausanne Elsevier B.V 27.07.2004
Elsevier
Subjects
Air entrainment
Applied sciences
Chemical engineering
Exact sciences and technology
Miscellaneous
Numerical analysis
Particulate jet
Solid-solid systems
Vortex method
Air entrainment
Vortex method
Numerical analysis
Particulate jet
Air flow
Turbulent flow
Analytical method
Numerical simulation
Solid particle
Vortex
Density
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Summary:This paper is concerned with the numerical simulation of the particulate jet generated by solid particles falling from a slit orifice into an unbounded quiescent air. A two-dimensional vortex method, proposed for the analysis of particle-laden free turbulent flow in prior papers, is employed for the simulation. The falling particles induce complicated air flow involving eddies with a wide variety of scales. The air takes its maximum velocity at the jet centerline. The particle velocity is higher than the free falling velocity of a single particle. The effects of the diameter and density of the particle on the flow are investigated. The entrained air flow rate is favorably compared with the value predicted by an analytical model.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0032-5910
1873-328X
DOI:10.1016/j.powtec.2004.06.004