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題名 | 垂直矩形盒中左隔板對熱質順向自然對流現象之研究=Aiding Thermosolutal Convection Transfer in Vertical Enclosures With Left Partition |
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作者 | 王士榮; 王立文; 劉淑慈; 廖文賢; 林俊源; Wang, Shu-lung; Wang, Lin-wen; Liu, Shu-tzu; Liao, Won-hson; Lin, Chun-yuan; |
期刊 | 南亞學報 |
出版日期 | 20040800 |
卷期 | 24 2004.08[民93.08] |
頁次 | 頁87-99 |
分類號 | 440.137 |
語文 | chi |
關鍵詞 | 質熱; 自然對流; 隔板; Thermosolutal; Natural convection; Partition; |
中文摘要 | 本實驗探討具左側隔板垂直矩形盒熱質順向自然對流現象,研究固定浮力比(N值)、隔板位置所展現流場型態。實驗裝置為展弦比等於0.5矩形盒,以銅板及壓克力板構成,盒內側板位置板放置隔板。工作溶液為硫酸銅水溶液,溫度梯度由兩個�皕聾蘛悃蚨�持,濃度梯度以電化學方法造成。盒內流場現象採用雷射光暗影法(sandowgraphy)來觀察。另為瞭解流場結構,對流場的溫度及濃度作量測分析。 本實驗預計無因次參數研究範圍如後: Ar=0.5, Ap=0.75, Pr=7~8, Sc=1700~2500, N=5.01~8.16, Gr, t=8.16×105, Gr, m=4.36x 106~6.15×106 |
英文摘要 | The current study is primarily motivated to gain better understanding of the flow pattern, the temperature distribution and concentration distribution caused by thermosolutal convection in an electrochemical system with a left partially divided verticaled enclosure. The test cell is a rectangular enclosure formed with acrylic and copper plates, which is wrapped with foam insulator to ensure an adiabatic boundary condition, and its aspect ratio is 0.5. The temperature is maintained uniform and controlled by two separated constant-temperature baths, which circulate heated or cooled water through the heat exchanger. The working solution used is aqueous copper sulphate. An electrochemical method based on a diffusion-controlled electrode reaction will e employed in this work for creating the concentration gradient. To visualize the flow, the shadowgraph technique are used. To understand the flow structure, the temperature distribution and concentration distribution are investigated. Finally, the correlations between Sherwood number and solutal Grashof number are also need to be analyzed. The ranges of the parameters in this work are: Ar=0.5, Ap=0.75, Pr=7~8, Sc=1700~2500, N=5.01~8.16, Gr, t=8.16×105, Gr, m=4.36x 106~6.15×106 |
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