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| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 陳國慶(Kuo-Ching Chen) | |
| dc.contributor.author | Wan-Lin Hsieh | en |
| dc.contributor.author | 謝萬霖 | zh_TW |
| dc.date.accessioned | 2021-06-08T04:18:45Z | - |
| dc.date.copyright | 2010-08-18 | |
| dc.date.issued | 2010 | |
| dc.date.submitted | 2010-07-26 | |
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| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/22479 | - |
| dc.description.abstract | 顆粒氣體在外界給予適當的能量輸入下，由於顆粒與顆粒之間為非彈性碰撞，顆粒最後會發生聚集的狀態。若加入侵入顆粒於單種基底顆粒系統後，將會增加或者降低系統聚集時的凝聚溫度。系統臨界聚集溫度的增加主要由於侵入顆粒發生巴西堅果效應。
本文第一部分所探討的是各種參數對於顆粒臨界聚集溫度的影響。這些參數主要分為三類：材料參數(密度、恢復係數、粒徑)、容器參數(隔板寬度、底面積大小)以及其他參數(侵入顆粒之數目、基底顆粒的質量)。此部分主要發現加入侵入顆粒的密度、恢復係數、以及容器底面積加大，系統的臨界聚集溫度將會下降。 第二部分主要藉由實驗、模擬、理論三種方法計算侵入顆粒於原系統之臨界聚集溫度。此部分實驗的方法採用粒子影像追蹤法測量實際的顆粒溫度；接著藉由顆粒力學計算模擬的方法來探討在單種基底顆粒系統中加入一顆侵入顆粒後，其對於原系統臨界聚集溫度的影響；最後將以上兩種方法與理論計算方法來做比較分析。 最後一個部分為將原尺度縮小後其臨界聚集溫度的討論。 | zh_TW |
| dc.description.abstract | In some energy input condition, the system of granular gas will come into being clustering state which results from inelastic collision between particles. However, the critical clustering temperature of a mono-disperse gas will be changed with intruding particle. The increasing value of the critical clustering temperature is because of the system occur the Brazil-nut effect
The first part of this thesis is the parameters discussion. All of these parameters are divided into three different types: the material parameters (density, coefficient of restitution, and diameter of particle), the container parameters (width of the compartments, bottom area) and the other parameters (number of the intruder, mass of the base particle). In addition, we found out that both of density and coefficient of restitution of intruding particle and bottom area of container are able to decrease the critical granular temperature. In the second part, PTV method is used to measure the actual granular temperature. And we also use the discrete element method to explore the effect of the critical clustering temperature of a mono-disperse gas with an intruding particle. And compare the value of theory with above of two methods. The final part of this thesis is to lessen the scale of all the system, and discuss the influence of critical clustering temperature. | en |
| dc.description.provenance | Made available in DSpace on 2021-06-08T04:18:45Z (GMT). No. of bitstreams: 1 ntu-99-R97543064-1.pdf: 4541269 bytes, checksum: dc873680e1591ec635a4e87acc0f287a (MD5) Previous issue date: 2010 | en |
| dc.description.tableofcontents | 致謝 I
中文摘要 III ABSTRACT IV 目錄 V 圖目錄 VIII 表目錄 XIV 第一章 緒論 1 1.1前言 1 1.2研究動機 1 1.3文獻回顧 2 1.3.1顆粒氣體的聚集現象 3 1.3.2顆粒分離 4 1.3.3顆粒震盪 6 1.3.4混合顆粒氣體於兩格系統中的競爭聚集 8 1.3.5顆粒溫度 10 1.3.6 J.Eggers的通量模型 11 1.3.7突崩 14 1.4論文架構 15 第二章理論推導 17 2.1通量模型推導 17 2.2修正通量模型 28 第三章 實驗架設 35 3.1實驗材料 35 3.1.1顆粒材料 35 3.1.2實驗容器 36 3.2實驗儀器 38 3.2.1振動系統 38 3.2.2量測系統 41 3.2.3高速攝影機系統 42 3.3實驗拍攝 43 3.3.1待拍容器與高速攝影機正對校正 43 3.3.2 PTV影像捕捉技術 45 第四章 侵入顆粒之臨界顆粒聚集溫度實驗 46 4.1討論容器隔板厚度對於凝聚溫度的影響 50 4.2以顆粒材料為參數之臨界顆粒聚集溫度實驗 54 4.2.1加入相同材質不同粒徑大小侵入顆粒之臨界顆粒聚集溫度實驗 54 4.2.2加入不同材質相同粒徑的侵入顆粒之臨界顆粒聚集溫度實驗 59 4.3以底面積大小為參數之臨界顆粒聚集溫度實驗 67 4.3.1加入相同材質不同粒徑大小的侵入顆粒之臨界溫度聚集實驗 67 4.3.2加入不同材質相同粒徑的侵入顆粒之臨界顆粒聚集溫度實驗 73 4.4改變其他參數之臨界顆粒聚集溫度實驗 82 4.4.1加入兩顆侵入顆粒之臨界顆粒具及溫度實驗 82 4.4.2將基底顆粒粒徑加大 88 4.5 侵入顆粒之巴西堅果效應 92 第五章 加入侵入顆粒之實驗、模擬、理論之臨界聚集溫度比較 95 5.1以實驗拍攝方法求得系統臨界聚集溫度 96 5.2以模擬方法求得系統臨界聚集溫度 100 5.3以理論方法求得系統臨界聚集溫度 104 第六章 顆粒氣體於小尺度探討 107 6.1 顆粒氣體臨界聚集於原尺度及小尺度探討 107 第七章 結論與未來展望 112 7.1 結論 112 7.2 未來展望 117 參考文獻 119 | |
| dc.language.iso | zh-TW | |
| dc.subject | 臨界聚集 | zh_TW |
| dc.subject | 顆粒氣體 | zh_TW |
| dc.subject | 粒子影像追蹤法 | zh_TW |
| dc.subject | 巴西堅果效應 | zh_TW |
| dc.subject | 侵入顆粒 | zh_TW |
| dc.subject | intruder | en |
| dc.subject | PTV | en |
| dc.subject | Brazil-nut effect | en |
| dc.subject | critical clustering | en |
| dc.subject | ranular gas | en |
| dc.title | 侵入者對顆粒氣體臨界聚集溫度之探討 | zh_TW |
| dc.title | On the Critical Clustering Temperature of Granular Gases with Intruders | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 98-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 趙聖德(Sheng-Der Chao),戴義欽(Yih-Chin Tai),郭志禹(Chih-Yu Kuo),楊馥菱(Fu-Ling Yang) | |
| dc.subject.keyword | 顆粒氣體,侵入顆粒,臨界聚集,巴西堅果效應,粒子影像追蹤法, | zh_TW |
| dc.subject.keyword | ranular gas,intruder,critical clustering,Brazil-nut effect,PTV, | en |
| dc.relation.page | 121 | |
| dc.rights.note | 未授權 | |
| dc.date.accepted | 2010-07-27 | |
| dc.contributor.author-college | 工學院 | zh_TW |
| dc.contributor.author-dept | 應用力學研究所 | zh_TW |
| 顯示於系所單位： | 應用力學研究所 | |
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