水份含量對顆粒體流動性質之影響

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劉建宏(Cheng-Hung Liu) 查詢紙本館藏

畢業系所

機械工程學系

論文名稱

水份含量對顆粒體流動性質之影響
(The Properties of Granular Flow with the Effect of Moisture Content)

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摘要(中)

在化工業界大約有一半以上的工業成品以及四分之三的工業原料是以顆粒體形狀存在，一定需要顆粒體的儲存裝置；顆粒體材料一般均存放在儲槽中。儲槽貯存器在工業界中是一個很普遍的應用，但傳統業界在使用上多採用經驗或半經驗的方式做為設計的方法，要考慮到許多不同的因素及條件。
在本研究中主要是要探討儲槽中的水份含量對顆粒體的流動的影響，藉著改變儲槽中的水份含量以及儲槽的外型，來觀測儲槽中因不同水份含量對顆粒體流動產生的影響。並藉由停滯區域之觀測，與顆粒體之性質進行比較之間的關聯性。

摘要(英)

The yield locus of a wet material was shifted to the left of that of a dry specimen by a constant value equal to the compressive isostatic stress due to pendular bridge. For material with straight yield loci, the shift was computed from the unaxial tensile strength, either measured in a tensile strength tester, and the angle of internal friction of the material.

關鍵字(中)

★ 儲槽
★ 顆粒體
★ 流動性質
★ 水份含量

關鍵字(英)

★ flow properties
★ moisture content
★ silo
★ granular

論文目次

摘要……………………………………………………………………….i
目錄……………………………………………………………………....ii
附表目錄………………………………………………………………...iv
附圖目錄…………………………………………………………………v
符號說明……………………………………………………………….viii
第一章前言…………………………………………………………1
1.1粒子流簡介………………………………………………………...1
1.2儲槽流簡介………………………………………………………...2
1.3研究方向與架構…………………………………………………...5
第二章實驗方法…………………………………………………..8
2.1實驗設備…………………………………………………………...8
2.2實驗原理與方法………………………………………………….11
一、實驗方法簡介……………………………………………….11
二、Jenike剪力測試儀量測法…………………………………..12
三、影像處理之程式原理簡介………………………………….14
四、水份含量之計算…………………………………………….16
2.3實驗步驟………………………………………………………….17
第三章結果與討論……………………………………………..19
3.1不同儲槽半角角度……………………………………………….19
3.2不同水份含量…………………………………………………….22
3.3改變顆粒床台開口大小………………………………………….26
第四章結論………………………………………………………..30
參考文獻……………………………………………………………..32

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指導教授

蕭述三(Shu-San Hsiau)

審核日期

2002-7-18

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