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研究生:丹尼爾加拉塔
研究生(外文):GALATA-CHALA DANIEL
論文名稱:合成噴流通過一平板的流動行為
論文名稱(外文):Flow Behavior of Synthetic Jet Flowing over a Flat Plat
指導教授:黃榮芳黃榮芳引用關係
指導教授(外文):Rong-Fang Huang
口試委員:黃榮芳許清閔林怡均
口試委員(外文):Rong-Fang HuangChing-Min HsuYi-jiun Lin
口試日期:2019-07-26
學位類別:碩士
校院名稱:國立臺灣科技大學
系所名稱:機械工程系
學門:工程學門
學類:機械工程學類
論文種類:學術論文
論文出版年:2019
畢業學年度:107
語文別:英文
論文頁數:145
中文關鍵詞:噴流合成噴流平板振盪頻率擾動頻率
外文關鍵詞:flow jetjetsyntheticexcitation frequencysynthetic jet
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CONTENTS
ABSTRACT i
摘要 ii
ACKNOWLEDGMENTS iii
CONTENTS iv
NOMENCLATURE vi
ABBREVIATIONS vi
TABLE CAPTIONS vii
FIGURE CAPTIONS vii
CHAPTER 1 1
Introduction 1
1.1 Background 1
1.2 Literature review 2
1.3 Scope of study 4
CHAPTER 2 6
Experimental setup and methods 6
2.1 Experimental set up 6
2.1.1 Synthetic jet device 6
2.1.2 Motor and control valve 7
2.1.3 Frequency controlling system 7
2.1.4 Smoke generator 8
2.2 Experimental methods 10
2.2.1 Oscillating jet velocity measurement 10
2.2.2 Flow visualization 11
2.2.3 PIV measurement 11
CHAPTER 3 14
Velocity pulsation 14
3.1 Jet exit velocity near orifice 14
3.2 Velocity property of synthetic jet 15
3.3 Stroke length 19
CHAPTER 4 20
Flow behavior of Synthetic jet flow 20
4.1 Flow behavior of synthetic jet flow on vertical plane 21
4.2 Flow behavior of synthetic jet flow on horizontal plane 24
4.3 Leading Vortex length 28
CHAPTER 5 30
Velocity fields 30
5.1 Time-averaged velocity vectors and streamlines 30
5.1.1 Time-average velocity vectors and streamlines along vertical plane 30
5.1.2 Time-averaged velocity vectors and streamlines along horizontal plane 32
5.2 Phase–resolved ensemble averaged absolute velocity vectors 35
5.2.1 Phase–resolved ensemble averaged velocity vectors along vertical plane 35
5.2.2 Phase–resolved ensemble averaged velocity vectors along horizontal plane 37
CHAPTER 6 40
Conclusions and Recommendations 40
6.1 Conclusions 40
6.2 Recommendations 43
References 44
References
[1] Cater, J.E. and J. Soria, The evolution of round zero-net-mass-flux jets. Journal of Fluid Mechanics, 2002. 472.
[2] Lee, C., et al., A piezoelectrically actuated micro synthetic jet for active flow control. Sensors and Actuators A: Physical, 2003. 108(1-3): p. 168-174.
[3] Mangate, L., et al., Experimental investigation on thermal and flow characteristics of synthetic jet with multiple-orifice of different shapes. International Journal of Thermal Sciences, 2019. 140: p. 344-357.
[4] Li, Z.-Y., et al., Synthetic jet vortex rings impinging onto a porous wall: Reynolds number effect. International Journal of Heat and Mass Transfer, 2019. 137: p. 951-967.
[5] Greco, C.S., et al., Effects of the stroke length and nozzle-to-plate distance on synthetic jet impingement heat transfer. International Journal of Heat and Mass Transfer, 2018. 117: p. 1019-1031.
[6] Xu, J.-l., et al., Piv Experimental Research of Instantaneous Flow Characteristics of Circular Orifice Synthetic Jet. Journal of Hydrodynamics, 2007. 19(4): p. 453-458.
[7] Gil, P., Synthetic jet Reynolds number based on reaction force measurement. Journal of Fluids and Structures, 2018. 81: p. 466-478.
[8] Smith, B.L. and A. Glezer, The formation and evolution of synthetic jets. Physics of Fluids, 1998. 10(9): p. 2281-2297.
[9] Chaudhari, M., et al., Frequency response of a synthetic jet cavity. Experimental Thermal and Fluid Science, 2009. 33(3): p. 439-448.
[10] Jabbal, M. and S. Zhong, The near wall effect of synthetic jets in a boundary layer. International Journal of Heat and Fluid Flow, 2008. 29(1): p. 119-130.
[11] Krishnan, G. and K. Mohseni, An Experimental and Analytical Investigation of Rectangular Synthetic Jets. Journal of Fluids Engineering, 2009. 131(12): p. 121101.
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