Shape of a particle curtain falling in stagnant air

Wardjiman, Chrestella, Lee, Andrew, Sheehan, Madoc, and Rhodes, Martin (2009) Shape of a particle curtain falling in stagnant air. Powder Technology, 192 (3). pp. 384-388.

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The dynamics of a free falling particle curtain were analysed and studied in the laboratory. In the experiments a steady, uniform, high-voidage stream of particles was fed through a rectangular slit to form a curtain across the entire width of a horizontal duct of cross-section of 0.15×0.60 m. The thickness of the particle stream at the inlet was varied over the range 2–10cm by varying the width of the rectangular slit. The particle flow rates were maintained constant at approximately 0.040 kg/s. The shape of the particle curtain was recorded using a high speed video camera. Our results indicated a low voidage curtain led to diverging curtain; increasing the initial voidage of the particle stream caused the curtain to become less divergent; further increase the voidage of the particle stream caused the curtain to become increasingly convergent. The shape of particle curtain was analysed using an Eulerian–Eulerian computational fluid dynamics (CFD) model. Reasonable agreement was found between the experiments and the CFD model predictions.

Item ID: 11227
Item Type: Article (Research - C1)
ISSN: 1873-328X
Keywords: particle curtain; trajectory; solid particles; gas interaction; cross flow
Date Deposited: 18 May 2010 22:23
FoR Codes: 09 ENGINEERING > 0904 Chemical Engineering > 090406 Powder and Particle Technology @ 100%
SEO Codes: 97 EXPANDING KNOWLEDGE > 970109 Expanding Knowledge in Engineering @ 60%
86 MANUFACTURING > 8699 Other Manufacturing > 869999 Manufacturing not elsewhere classified @ 20%
84 MINERAL RESOURCES (excl. Energy Resources) > 8498 Environmentally Sustainable Mineral Resource Activities > 849804 Management of Solid Waste from Mineral Resource Activities @ 20%
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