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  • 學位論文

無閥式微型幫浦數值模擬與效率分析

Valve-less Micropump Numerical Simulation and Efficiency Analysis

指導教授 : 顏瑞和

摘要


本研究是以計算流體力學套裝軟體Fluent,來對無閥式微型幫浦進行研究。模擬無閥式微型幫浦需設定移動邊界條件,因此網格需使用動態網格系統,本文會對Fluent的動態網格進行驗證,並找出簡化移動邊界條件的方法以避免使用複雜的動態網格系統;本文藉由假設幫浦進出口兩端流體速度會隨時間成三角函數sine的變化,進而推導出一個計算一個工作周期幫浦流量的積分式,藉由取得暫態幫浦中的漸擴管效率,該積分式可簡化為只有漸擴管效率的關係式,文中會對該關係式在各種雷諾數之下的準確性做驗證;本文亦會對漸擴管效率做研究,比較在不同雷諾數與張角之下,暫態與穩態的漸擴管效率會有何種差異;有了計算幫浦流量的多項式與暫態、穩態之間關於漸擴管效率的研究,對於日後幫浦設計上會有很大的幫助

並列摘要


The objective of study is to investigate valve-less micropump by CFD software Fluent.Simulating valve-less micropump has to use moving boundary condition, so the mesh has to use the dynamic mesh system.This text will prove the feasibility of dynamic mesh,and find out simplified boundary condition for avoiding the complicated dynamic mesh system.This article supposes that the importing and exporting velocity will be changed of trigonometric function sine with time, and then derives out integral formula of the flow rate per period.The integral formula can be simplified to diffuser efficiency formula by getting efficiency of diffuser .This article will prove the accuracy of diffuser efficiency formula in different Reynolds number, and compare the efficiency of diffuser for different Reynolds nurmber and diffuser angles in trainsient and steady process.This investigation will be very helpful for the design of micropump system.

參考文獻


[1] E.Stemme,G.Stemme,”A valve-less diffuser/nozzle-based fluid pump”, Sensors and Actuators A,39,pp.159-167,1993
[2] A.Ollson,G.Stemme,E.Stemme,”A valve-less planar fluid pump with two pump chambers”,Sensors and Actuators A,46-47,pp.549-556,1995
[3] T.Gerlach,H.Wurmus,”Working principle and performance of the dynamic micropump” Sensors and Actuators A,50,pp.135-140,1995
[5] A.Ollson,P.Enoksson,G.Stemme,E.Stemme,”Micromachined flat-walled valve-less diffure pumps”,Journal of microelectromechanical systems,Vol.6,No.2,June,pp.161-166,1997
”A valve-less diffuser micropump for microfluidc analytical systems”, Sensors and Actuators B,72,pp.259-265,2001

被引用紀錄


張祚昌(2009)。低壓縮比蠕動式微幫浦分析〔碩士論文,國立交通大學〕。華藝線上圖書館。https://doi.org/10.6842/NCTU.2009.00445
郭耀宗(2009)。壓電式質子交換膜燃料電池性能於陰極端之理論與實驗研究〔碩士論文,國立臺灣大學〕。華藝線上圖書館。https://doi.org/10.6342/NTU.2009.00164
黃育仁(2009)。陽極流道對於壓電式質子交換膜燃料電池性能之影響〔碩士論文,國立臺灣大學〕。華藝線上圖書館。https://doi.org/10.6342/NTU.2009.00158
蕭育政(2009)。單邊擺動壓電式無閥薄膜泵之數值模擬〔碩士論文,國立臺灣大學〕。華藝線上圖書館。https://doi.org/10.6342/NTU.2009.00157
林群傑(2008)。壓電可變式流道質子交換膜燃料電池之數值模擬分析〔碩士論文,國立臺灣大學〕。華藝線上圖書館。https://doi.org/10.6342/NTU.2008.00337

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