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

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题名:	Experimental study on the influence of bed height on convection cell formation
作者:	Hsiau,SS;Liao,CC;Sheng,PY;Tai,SC
贡献者:	機械工程學系
关键词:	GRANULAR CONVECTION;SEGREGATION;FLOWS
日期:	2011
上传时间:	2012-03-27 17:07:10 (UTC+8)
出版者:	國立中央大學
摘要:	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.
關聯:	EXPERIMENTS IN FLUIDS
显示于类别:	[機械工程學系] 期刊論文

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