Experimental study on the influence of bed height on convection cell formation

NCUIR > Engineering College > Departmant of Mechanical Engineering > journal & Dissertation > Item 987654321/50232

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/50232

Title:	Experimental study on the influence of bed height on convection cell formation
Authors:	Hsiau,SS;Liao,CC;Sheng,PY;Tai,SC
Contributors:	機械工程學系
Keywords:	GRANULAR CONVECTION;SEGREGATION;FLOWS
Date:	2011
Issue Date:	2012-03-27 17:07:10 (UTC+8)
Publisher:	國立中央大學
Abstract:	In this study, we have investigated experimentally the convection phenomenon of granular matter in a vertical shaker device. The motions of the granular materials were recorded by a high-speed camera. Image processing technology and a particle tracking method were employed to measure the convection strength, convection size, and granular temperature. The results show that the initial bed height, dimensionless vibrating acceleration, and vibrating frequency have significant influence on the convection mechanism. An interesting finding that occurs with increasing the bed height is the existence of two peaks and one low convection strength value which occurs due to the growth of the solid-like region. We also find that the two peak and one low values become greater when higher dimensionless vibrating acceleration is applied to the granular bed.
Relation:	EXPERIMENTS IN FLUIDS
Appears in Collections:	[Departmant of Mechanical Engineering ] journal & Dissertation

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