Results 71 to 80 of about 109 (96)
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Simulation of a piezoelectrically actuated valveless micropump
Smart Materials and Structures, 2004This paper numerically studies the performance of a piezoelectrically actuated valveless micropump with consideration of the three-way electro–mechanical–fluid couplings. Simulation of the piezoelectrically actuated valveless micropump (PVAM) indicates that both the pumping rate and the membrane deflection amplitude increase with the increase of the ...
Bin Fan, Gangbing Song, Fazle Hussain
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Fluid–structure coupling in valveless micropumps
Journal of Micromechanics and Microengineering, 2011Valveless micropumps work on the principle that the reciprocal forcing of fluid by an actuator through diffuser/nozzle elements generates a rectified mean flow. The pump characteristics depend on the coupling between the fluid and structure. We analyze the characteristics of valveless micropumps by developing a coupled model for the area-averaged ...
A Azarbadegan, I Eames, A Wojcik
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Unveiling the missing transport mechanism inside the valveless micropump
Lab on a Chip, 2012It has long been held, misleadingly, that the rectifier is the only decisive element for the design of fluid transportation in a valveless micropump. We have shown here that pump performance is also critically dependent on the design of the vibration chamber, a neglected element in micropump design that has drawn almost no attention in the past ...
An-Bang, Wang, Ming-Che, Hsieh
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Analysis of double-chamber parallel valveless micropumps
Microfluidics and Nanofluidics, 2009The characteristics of a double-chamber valveless parallel micropump are analysed using a one-dimensional non-linear model. The relationships between the mean volume flux, pressure difference and (measurable) characteristics of the pump are derived in a closed-form expression which are validated against the numerical solutions.
A. Azarbadegan +3 more
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A dynamic model for studying valveless electromagnetic micropumps
Journal of Micromechanics and Microengineering, 2011In this paper, a fluid–diaphragm coupling model is proposed for studying the dynamic performance of a valveless micropump. In the model, fluid inertia is included and fluid pressure is obtained by solving the coupling equation simultaneously with Navier–Stokes equations through a transient dynamic mesh simulation.
T X Dinh, N T M Le, V T Dau, Y Ogami
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The Characteristic Analysis of a Piezoelectric Actuator for Valveless Micropumps
Key Engineering Materials, 2006The behavior of a circular piezoelectric actuator for volumetric micropump has been investigated by using theoretical and finite element analyses. A modified theoretical model was developed to predict the behavior of a piezoelectric actuator induced by the applied voltage. The theoretical results for the diaphragm deflection were in good agreement with
Sung Hyuk Lee +3 more
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Study on the valveless micropumps with saw-tooth microchannels
11th IEEE International Conference on Control & Automation (ICCA), 2014Yinghua Xu +3 more
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Development of Valveless Resonant Micropumps for Liquid Applications
2018 AIAA Aerospace Sciences Meeting, 2018Mohamed, Ahmed +2 more
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An integrated study of parallel valveless micropumps
2012This study is supported by the Dorothy Hodgkin Postgraduate Award (DHPA) of the Engineering and Physical Sciences Research Council (EPSRC) of United Kingdom and Ebara Research Co. Ltd of Japan.
Azarbadegan, A +3 more
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A Valveless Piezoelectric Micropump With a Coanda Jet Element
Sensors and Actuators A: Physical, 2015Shouqi Yuan, Xiuhua He, Zhidan Deng
exaly