| 研究生: |
周東寬 Dong-Kwan Chou |
|---|---|
| 論文名稱: |
二維斜坡顆粒流之輸送帶實驗與分析 Experimental study of slowly granular flow on the two-dimensional inclined Conveyor Belt |
| 指導教授: |
周憲德
Hsien-Ter Chou |
| 口試委員: | |
| 學位類別: |
碩士 Master |
| 系所名稱: |
工學院 - 土木工程學系 Department of Civil Engineering |
| 畢業學年度: | 91 |
| 語文別: | 中文 |
| 論文頁數: | 88 |
| 中文關鍵詞: | 顆粒流 、分層現象 、粒子溫度 |
| 外文關鍵詞: | Granular temperature, Stratification phenomenon, Granular flow |
| 相關次數: | 點閱:5 下載:0 |
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本研究主要是使用輸送帶設備帶動顆粒來進行實驗、並利用影像擷取技術及Voronoï影像分析法來研究二維顆粒之流動行為。
主要分非均勻流與均勻流兩方面來探討,在非均勻流部分,是以其幾何特性為分析方向,並藉由四種不同傾斜坡度(0°、5°、10°、15°)條件下之向量關係及高程剖面關係來瞭解其中之奧妙;均勻流部分,則是用四種不同高度之條件下,以速度分佈、擾動速度、粒子溫度、剪應變率、Dd值等物理量為主要探討項目,最後再說明如何將顆粒流分成三段大小不一的流層。
This study performs experimental work on the slow granular flow on the conveyor belt. The Voronoï image algorithm is used to study the mobile behavior of two-dimensional particles. The flow patterns of the granular flows are categorized into nonuniform flow, and uniform flow, respectively.
In the nonuniform flow regime, the geometry characteristics at four slopes(i.e. 0°,5°,10°,15°),the relationship between velocity vectors and the slope configuration are examined.; In the uniform flow regime, the velocity distribution, the velocity fluctuation, granular temperature and the strain rate are evaluated. The related physical quantity are discussed as well. The stratification of flow phenomenon of three different layers, i.e. free shear layer on top, forced shear layer at bottom and plug zone in between, is mainly a function of particle thickness.
【中文】
周憲德、張藝耀(2000),「三維顆粒堆積受水平振動之斜坡傾角變化」,力學期刊系列B 第十六卷,第二期,第153-160頁。
周憲德、吳京霖(2001),「砂粒受水平振動行為之研究」,國立中央大學土木工程研究所碩士論文,中壢。
周憲德、彭子軒(2002),「慢顆粒流之輸送帶實驗與影像分析」,國立中央大學土木工程研究所碩士論文,中壢。
蕭述三、戴其璜(2001),「振動床運動機制之研究」,國立中央大學機械工程研究所碩士論文,中壢。
蕭述三、陳文正(2001),「不同密度顆粒於振動床中之分離現象分析」,國立中央大學機械工程研究所碩士論文,中壢。
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