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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 張正憲(Jeng-Shian Chang) | |
dc.contributor.author | Ting-Jui Hsieh | en |
dc.contributor.author | 謝廷睿 | zh_TW |
dc.date.accessioned | 2021-06-16T09:53:12Z | - |
dc.date.available | 2017-02-08 | |
dc.date.copyright | 2017-02-08 | |
dc.date.issued | 2016 | |
dc.date.submitted | 2017-01-10 | |
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dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/60055 | - |
dc.description.abstract | 本論文利用商業軟體ANSYS作為數值模擬的工具,對噴嘴/擴散器式的無閥式微幫浦作數值模擬分析,在建立包覆振動腔及進出口腔的彈性體模型後,將流體壓力列入彈性體受力的外力之一,以達到雙向流固耦合分析,並和實驗的流量比較。文中分別討論了單壓電片驅動及雙壓電片驅動的微幫浦,在單壓電片微幫浦中又針對不同進出口管徑大小及不同彈性體的楊氏模數進行分析,探討其對微幫浦性能的影響。由數值計算結果可以發現,彈性腔體微幫浦在一定頻率的範圍內會有兩個流量區,低頻驅動時的第一流量區及高頻驅動時的第二流量區,第二流量區的流量比第一流量區高。在高頻驅動下,彈性腔體會產生共振而有大趨勢振動現象,推測其為第二流量區發生的原因之一。另外,進出口管徑的增加,會提高微幫浦的流量;楊氏模數增加則共振頻較高,第一流量區的流量增加,第二流量區的流量則減少。最後模擬雙壓電片微幫浦的運作,與單壓電片微幫浦比較,發現雙壓電片微幫浦在第一流量區流量有顯著的提升,在第二流量區則效果較差。 | zh_TW |
dc.description.abstract | This thesis uses the ANSYS software to perform numerical analysis on the efficiency for valveless nozzle/diffuser-based micropumps are assumed elastic vibration chamber, inlet chamber and outlet chamber. Effects of fluid-structure interactions are considered and resulting flow rates are compared with those obtained from the experimental observations. The micropumps driven by a single piezoelectric actuator and a dual piezoelectric actuators are discussed. For the single piezoelectric micropump the effects of diameter of inlet/outlet tube and Young's modulus are discussed. The numerical results show that, there are two flow zones in the micropump in a certain frequency range; the first zone is present at low frequencies while the second zone at high frequencies. The flow rate of the second zone is higher than that of the first zone. Under high frequency driving, the elastic body resonates and there is a long scale vibration is intensified, which is probably one of the reasons why the second zone occurs. In addition, larger diameter of the inlet and outlet tubes results in an increase of flow rate; when Young's modulus increases, the resonant frequency and the flow rate in the first zone increase, but the flow rate in the second zone decreases. At last, the results of the dual piezoelectric micropump are compared with those of the single piezoelectric micropump. It is found that the dual piezoelectric micropump has a significantly higher flow rate in the first zone and a lower flow rate in the second zone. | en |
dc.description.provenance | Made available in DSpace on 2021-06-16T09:53:12Z (GMT). No. of bitstreams: 1 ntu-105-R03543017-1.pdf: 5385773 bytes, checksum: 85d82fc5443e8e3678c6c79dac978201 (MD5) Previous issue date: 2016 | en |
dc.description.tableofcontents | 誌謝 i
摘要 ii ABSTRACT iii 目錄 iv 圖與表目錄 vii 符號說明 xvi 第一章 導論 1 1.1 前言 1 1.2 文獻回顧 2 1.2.1 驅動方式簡介 2 1.2.2 微閥門簡介 3 1.2.3 無閥式微幫浦之文獻回顧 5 1.2.4 無閥式微幫浦之數值模擬文獻回顧 6 1.3 研究動機 7 第二章理論基礎 8 2.1 無閥式微幫浦基本工作原理 8 2.2 壓電、結構、流體之相互耦合作用分析 10 2.2.1 壓電與結構 10 2.2.2 流場 11 第三章 數值方法與模擬設定 12 3.1 數值方法 12 3.1.1 有限體積法 12 3.1.2 收斂標準 15 3.2 實驗模型與模擬設定 15 3.2.1 流場與結構耦合 15 3.2.2 模擬模型設定依據 16 3.2.3 模擬尺寸設定 18 3.2.4 流體域和結構域及區塊定義 18 3.2.5 流體域和結構域之耦合區 20 3.2.6 邊界條件設定 22 3.2.7 單元選擇 23 3.2.8 模擬設定和假設 24 3.2.9 流量計算後處理 25 3.2.10 模擬狀況 25 第四章 模擬結果與討論 27 4.1 進出口腔半徑與振動腔半徑相同(R/Rch=1) 27 4.1.1 Model-1在第一、二流量區的振動表現 29 4.1.2 Model-1流量計算結果與討論 55 4.2 不同管徑的微幫浦 63 4.2.1 Model-2在第一、二流量區的振動表現 63 4.2.2 Model-2流量計算結果與討論 81 4.3 改變楊氏模數 89 4.3.1 Model-3在第一、二流量區的振動表現 89 4.3.2 Model-3流量計算結果與討論 106 4.4 剛性邊界 113 4.4.1 Model-4在第一、二流量區的振動表現 113 4.4.2 Model-4流量計算結果與討論 117 4.5 雙壓電片驅動 119 4.5.1 Model-5在第一、二流量區的振動表現 119 4.5.2 Model-5流量計算結果與討論 137 4.6 第一與第二流量區流場 138 4.7 誤差討論 149 第五章 結論與未來展望 150 5.1 結論 150 5.1.1 單壓電片微幫浦 150 5.1.2 雙壓電片微幫浦 151 5.1.3 流場 152 5.2 未來展望 152 參考文獻 154 附錄 159 | |
dc.language.iso | zh-TW | |
dc.title | 多共振壓電式無閥門微幫浦在不同管徑和彈性模數的行為研究 | zh_TW |
dc.title | Numerical Simulations on the Effect of Distinct Diameter of Tube and Elastic Moduli on the Performance of Multi-resonance Piezoelectric Valveless Micropumps | en |
dc.type | Thesis | |
dc.date.schoolyear | 105-1 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 吳光鐘(Kuang-Chong Wu),王安邦(An-Bang Wang),陳世豪(Chen-Shih Hao),黃冠榮(Huang-Kuan Jung) | |
dc.subject.keyword | 壓電無閥式微幫浦,雙向流固耦合分析,楊氏模數,ANSYS, | zh_TW |
dc.subject.keyword | valveless nozzle/diffuser-based micropump,two-way fluid-structure coupled,ANSYS, | en |
dc.relation.page | 159 | |
dc.identifier.doi | 10.6342/NTU201700044 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2017-01-11 | |
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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