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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/3173


    Title: 不同粒子堆積高度振動床迴流運動機制之研究;The transport properties of convection roll in a vibrated granular bed
    Authors: 沈柏諺;Po -Yen
    Contributors: 機械工程研究所
    Keywords: 質量流率;迴流;振動床;vibrated bed;convection;mass flow rate
    Date: 2009-07-03
    Issue Date: 2009-09-21 12:07:49 (UTC+8)
    Publisher: 國立中央大學圖書館
    Abstract: 本論文以實驗的方式,研究顆粒體受到垂直振動時的迴流運動現象,以振動床作為實驗設備,探討在相同振動加速度與振動頻率下,改變顆粒體堆積高度,對顆粒體迴流運動現象的影響。 在實驗方面,應用影像處理技術及粒子追蹤的方法,可準確量測並計算出追蹤粒子的位置與速度大小,藉由追蹤粒子的垂直速度與容器寬度的關係可以算出顆粒體迴流中心質量流率J的大小,由實驗結果顯示,顆粒體的堆積高度改變與顆粒體迴流之質量流率J有顯著的雙峰化關係。 he transport properties of convection roll in a two-dimensional vibrated granular bed in the same vibration acceleration and vibration frequency are investigated by increasing the heap height of the granule in this paper. The image processing technology and particle tracking method were employed to measure the fluctuating velocity and the dimensionless mass flow rate.
    Appears in Collections:[機械工程研究所] 博碩士論文

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