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研究生：	魏廷穎 Wei, Tin-Yin
論文名稱：	新型微反應器之數值研究 Numerical studies of a new micro-reactor
指導教授：	洪振益 Hung, Chen-I
學位類別：	碩士 Master
系所名稱：	工學院 - 機械工程學系 Department of Mechanical Engineering
論文出版年：	2005
畢業學年度：	93
語文別：	中文
論文頁數：	103
中文關鍵詞：	微混合器、微反應器
外文關鍵詞：	micromixer, microreactor
相關次數：	點閱：72 下載：4
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查詢本校圖書館目錄查詢臺灣博碩士論文知識加值系統勘誤回報

　　近幾年來，微機電系統的研究與應用，對機械、生醫、電機等科技產業造成相當大的影響，而在這當中，有許多層面均牽涉到流體力學的研究。由於流體輸送的應用廣泛，促進了微流體元件及系統的發展：包含了微通道、微幫浦、微混合器、微閥門等分析常用元件。其中微混合器更是在藥物檢測及化學檢測中扮演著很重要的角色。在我們所熟知的巨觀流場中，可以利用紊流的產生來促使流體混合，但是在微小尺度下，要產生紊流是一件困難的事情。因此，利用產生紊流的方式來達到混合效果並無法有效地應用在微小尺度下的流場。

　　本研究計劃利用Y型微混合器的外型，然後在主混合流道的左右各加上一個迴流道，藉此在主混合流道上造成彎曲流場的效果。並利用計算流體力學之數值方法去模擬及分析微小尺寸混合器裝置內的流場變化，探討各種設計參數，諸如幾何形狀、迴流道位置、進口速度、以及厚度等可能對混合機制所產生的影響，期望模擬出合理且適用的混合效果，並提供外型參數及混合效果的評估。另外探討反應機制，希望藉由混合增強反應效果。

　In recent years, the study and application of Micro Total Analysis System cause sizable influence on machinery, electrical machinery, biomedicine scientific and technological industry, and among them, there are a lot of aspects involve fluid mechanics. Because the application of the fluid transportation is extensive, it has promoted the development of microfluidic components and system : include microchannel, micropump, micromixer microvalve and etc. Among them, micromixer is a very important part in the microfluidic devices. In the macro scale flow field, we could produce the turbulence to advance the fluid mixing. However, we could not use the way that produces the turbulent flow to enhance the mixing effect in very small scale.

　The study utilizes the geometric of the Y-type micromixer, and add feedback channel on both sides to drive ensuing vortexes to change positions and magnitude. We utilize CFD software to study the flow phenomenon, discuss any design parameters which influence on the mixing mechanism such as geometric shape, feedback channels position, and inlet velocity in the micromixer. It is expect to simulate reasonable and suitable mixing effect, and provide the estimate about the parameter of geometric and mixing efficiency. In addition, we discuss reaction farther, and hope that mix would enhance reaction.

目錄
提要..........................................................I
Abstract......................................................II
誌謝........................................................III
目錄........................................................IV
表目錄......................................................VII
圖目錄.....................................................VIII
符號說明....................................................XI
第一章、	導論.................................................1
1.1 前言.....................................................................................................1
1.2 研究動機與目的.................................................................................5
1.3 文獻回顧.............................................................................................8
1.4 本文架構...........................................................................................17
第二章、	理論基礎.........................................................................................18
2.1 物理模型...........................................................................................18
2.2 基本假設...........................................................................................24
2.3 統御方程式.......................................................................................25
2.4 無因次分析.......................................................................................26
2.5 邊界條件...........................................................................................29
2.4 混合效率...........................................................................................30
第三章、	數值方法.........................................................................................32
3.1 控制體積法.......................................................................................34
    3.1.1 統御方程式之離散................................................................35
    3.1.2 速度與壓力之關聯性............................................................38
    3.1.3 SIMPLEC演算法....................................................................41
3.2 收斂標準...........................................................................................42
第四章、	結果與討論.....................................................................................43
4.1 網格測試...........................................................................................43
4.2 三維混合器................................................................45
    4.2.1 單純Y型混合器....................................................................45
    4.2.2 加入漸縮噴嘴與回流道之Y型混合器................................51
    4.2.3階梯型微混合器......................................................................67
4.3 反應器...............................................................................................74
    4.3.1 表面反應器............................................................................74
    4.3.2 體積反應器............................................................................84
第五章、	結論與未來展望.............................................................................98
5.1 結論...................................................................................................98
5.2 未來展望.........................................................................................100
參考文獻.......................................................................................................101
自述...............................................................................................................103


                                    

參考文獻
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校內：2010-06-27公開
校外：2010-06-27公開

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