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The appearance of gas bubbles in a valve-less micropump is generally undesirable as they can lead to performance deterioration, life reduction and even complete failure of the micropump. In order to predict influence of gas bubbles in valve-less micropump chamber on periodic driving pressure, the mathematical models, including volume change of chamber, continuity equation, effective bulk modulus and resistance coefficients of the nozzle and diffuser, are given to describe dynamic characteristics of piezoelectric valve-less nozzle/diffuser micropump. The influence of different gas bubble volume in chamber on the valve-less micropump periodic driving pressure is analyzed. Pressure pulsations with two gas bubbles into the valve-less micropump chamber are simulated and tested. Simulation and experimental results are given. Comparison of the results shows that the mathematical model and simulation method can handle the prediction of pressure pulsations accompanying gas bubble in the valve-less micropump.
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Keywords:
- valve-less micropump /
- gas bubble /
- pressure pulsations
[1] Woias P 2005 Sens. Actuators B 105 28
[2] Izzo I, Accoto D, Menciassi A, Schmitt L, Dario P 2007 Sen. Actuators A 133 128
[3] Kan J W, Yang Z G, Peng T J, Cheng G M, Wu B D 2005 Sens. Actuators A 121 156
[4] Andersson H, van der Wijngaart W, Nilsson P, Enoksson P, Stemme G 2001 Sens. Actuators B 72 259
[5] Jiang D, Li S J, Bao G 2008 Acta Phys. Sin. 57 5072 (in Chinese) [蒋丹, 李松晶, 包钢 2008 物理学报 57 5072]
[6] Zengerle R, Geiger W, Richter M, Ulrich J, Kluge S, Richter A 1995 Sens. Actuators A 47 557
[7] Bourouina T, Grandchamp J 1996 J. Micromech. Microeng. 6 398
[8] van de Pol F C M, Breeveld P C, Fluitman J H J 1990 Proceeding. Technical Digest MME Berlin, Germany, November 26–27, 1990 p19
[9] Richter M, Linnemann R, Woias P 1998 Sens. Actuators A 68 480
[10] Xie H B, Fu X, Yang H Y 2002 Chin. J. Mech. Eng. 38 54 (in Chinese) [谢海波, 傅新, 杨华勇 2002 机械工程学报 38 54]
[11] Zhao Y J 2003 M. S. Disserfation (Jilin: Jilin University) (in Chinese) [赵永军 2003 硕士学位论文(吉林: 吉林大学)]
[12] Cai Y G 1989 Dynamics of Fluid Transmission Pipeline (Hangzhou: Zhejiang University Press) p8 (in Chinese) [蔡亦钢 1989 流体传输管道动力学(杭州: 浙江大学出版社)第8页]
[13] Li S J, Yang C F, Jiang D 2008 J. Appl. Mech. 75 0410121
[14] Olsson A, Stemme G, Stemme E 2000 Sens. Actuators A 84 165
[15] Jiang D, Li S J, Yang P 2011 Eng. Mech. 28 218 (in Chinese) [蒋丹, 李松晶, 杨平 2011 工程力学 28 218]
[16] Jiang D, Li S J 2012 Chin. Phys. B 21 074701
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[1] Woias P 2005 Sens. Actuators B 105 28
[2] Izzo I, Accoto D, Menciassi A, Schmitt L, Dario P 2007 Sen. Actuators A 133 128
[3] Kan J W, Yang Z G, Peng T J, Cheng G M, Wu B D 2005 Sens. Actuators A 121 156
[4] Andersson H, van der Wijngaart W, Nilsson P, Enoksson P, Stemme G 2001 Sens. Actuators B 72 259
[5] Jiang D, Li S J, Bao G 2008 Acta Phys. Sin. 57 5072 (in Chinese) [蒋丹, 李松晶, 包钢 2008 物理学报 57 5072]
[6] Zengerle R, Geiger W, Richter M, Ulrich J, Kluge S, Richter A 1995 Sens. Actuators A 47 557
[7] Bourouina T, Grandchamp J 1996 J. Micromech. Microeng. 6 398
[8] van de Pol F C M, Breeveld P C, Fluitman J H J 1990 Proceeding. Technical Digest MME Berlin, Germany, November 26–27, 1990 p19
[9] Richter M, Linnemann R, Woias P 1998 Sens. Actuators A 68 480
[10] Xie H B, Fu X, Yang H Y 2002 Chin. J. Mech. Eng. 38 54 (in Chinese) [谢海波, 傅新, 杨华勇 2002 机械工程学报 38 54]
[11] Zhao Y J 2003 M. S. Disserfation (Jilin: Jilin University) (in Chinese) [赵永军 2003 硕士学位论文(吉林: 吉林大学)]
[12] Cai Y G 1989 Dynamics of Fluid Transmission Pipeline (Hangzhou: Zhejiang University Press) p8 (in Chinese) [蔡亦钢 1989 流体传输管道动力学(杭州: 浙江大学出版社)第8页]
[13] Li S J, Yang C F, Jiang D 2008 J. Appl. Mech. 75 0410121
[14] Olsson A, Stemme G, Stemme E 2000 Sens. Actuators A 84 165
[15] Jiang D, Li S J, Yang P 2011 Eng. Mech. 28 218 (in Chinese) [蒋丹, 李松晶, 杨平 2011 工程力学 28 218]
[16] Jiang D, Li S J 2012 Chin. Phys. B 21 074701
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