Flow characteristics of the diffuser/nozzle micropump—A state space approach

This paper reviews the development of valveless piezoelectric pump with cone-shaped tube chronologically, which have widely potential application in biomedicine and micro-electro-mechanical systems because of its novel principles and deduces the research direction in the future. Firstly, the history of valveless piezoelectric pumps with cone-shaped tubes is reviewed and these pumps are classified into the following types: single pump with solid structure or plane structure, and combined pump with parallel structure or series structure. Furthermore, the function of each type of cone-shaped tubes and pump structures are analyzed, and new directions of potential expansion of valveless piezoelectric pumps with cone-shaped tubes are summarized and deduced. The historical argument, which is provided by the literatures, that for a valveless piezoelectric pump with cone-shaped tubes, cone angle determines the flow resistance and the flow resistance determines the flow direction. The argument is discussed in the reviewed pumps one by one, and proved to be convincing. Finally, it is deduced that bionics is pivotal in the development of valveless piezoelectric pump with cone-shaped tubes from the perspective of evolution of biological structure. This paper summarizes the current valveless piezoelectric pumps with cone-shaped tubes and points out the future development, which may provide guidance for the research of piezoelectric actuators.

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“…In 2012, Chandika, et al [32], developed a valveless piezoelectric pump with cone-shaped tubes. This pump had cone angle of 10°(see Fig.…”

Section: Plane Structurementioning

confidence: 99%

Advances in Valveless Piezoelectric Pump with Cone-shaped Tubes

Zhang

Wang

Huang

2017

Chin. J. Mech. Eng.

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“…Special interest has been devoted to developing micropumps technologies for applications in drug delivery, thermal management, fuel injection, and chemical analysis [1,[3][4][5][6]. In developing micropumps several types have been introduced including piezoelectric, electrostatic, thermopneumatic, phasechange, shape memory alloy, electromagnetic, electrowetting, electro-osmotic, and evaporative types [2,[5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

“…In addition to experimental investigation of micropumps' performance, mathematical modeling has been used to predict the performance and interpret the experimental data of micropumps [3,[10][11][12][13][14][15][16][17]. For example, Chandika et al [3] developed a mathematical model of a piezoelectric-driven diffuser-nozzle type micropump.…”

Section: Introductionmentioning

confidence: 99%

“…For example, Chandika et al [3] developed a mathematical model of a piezoelectric-driven diffuser-nozzle type micropump. The model used the state space approach to investigate the micropump flow characteristics.…”

Section: Introductionmentioning

confidence: 99%

“…The results obtained from the finite element method compared well with experimental data reported for different diffuser-nozzle geometries and angles. Although several techniques have been developed and used to model different types of micropumps, nonetheless, there is a lack of understanding of the frequency response and dynamic behavior of micropumps in relation to their structural elements and working fluids [3]. That is, different types of micropumps usually consist of complex structural elements, which show strong interaction with one another.…”

Section: Introductionmentioning

confidence: 99%

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Understanding frequency response of thermal micropumps using electrical network analogy

Bardaweel

2014

Can. J. Phys.

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In this article the frequency response of a thermal micropump is investigated using electrical network analogy modeling technique. This technique is based on dividing the micropump into subsystems and representing each subsystem using the equivalent network analogy. Obtained mathematical models of subsystems are then represented using transfer functions and block diagrams. As an example, thermopneumatic micropump is considered. Model simulation suggests an increase in the net flow rates of the micropump as the operating frequencies increased, until a first cut-off frequency is reached. A second cut-off frequency is observed with further increase in operating frequencies. Model simulations are consistent with qualitative experimental trends reported in the literature. The model is used to obtain a relationship between cut-off frequencies and design properties of the micropump. Model simulations show that lower cut-off frequency is related to mechanical properties of the thermopneumatic micropump, including stiffness and damping. Upper cut-off frequency is related to thermal properties of the thermopneumatic micropump, including thermal conductivity, heat capacity, and working fluid density.Résumé : Nous étudions ici la réponse en fréquence d'une micro-pompe thermique en utilisant une technique de modélisation par réseau électrique analogue. Selon cette technique, nous divisons la micro-pompe en sous-systèmes et chaque sous-système est représenté par un réseau analogue. La modélisation mathématique fait alors appel à des fonctions de transfert et à des schémas fonctionnels. Pour fin d'exemple, nous étudions une micro-pompe thermo-pneumatique. La modélisation suggère une augmentation du débit avec la fréquence jusqu'à une première fréquence de coupure. Une augmentation subséquente de la fréquence nous amène à une seconde fréquence de coupure. Ces simulations sont cohérentes avec les tendances qualitatives expérimentales rapportées dans la littérature. Nous utilisons le modèle pour obtenir la relation entre les fréquences de coupure et le design de la micro-pompe. Les simulations montrent que la fréquence de coupure la plus basse est reliée aux propriétés mécaniques de la micro-pompe thermo-pneumatique, incluant la rigidité et l'amortissement. La fréquence supérieure est reliée aux propriétés thermiques de la micro-pompe, incluant la conductivité thermique, la capacité calorifique et la densité du fluide pompé. [Traduit par la Rédaction]

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Research on output performance of valve-less piezoelectric pump with multi-cone-shaped tubes

et al. 2020

Microsyst Technol

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Flow characteristics of the diffuser/nozzle micropump—A state space approach

Cited by 17 publications

References 22 publications

Advances in Valveless Piezoelectric Pump with Cone-shaped Tubes

Advances in Valveless Piezoelectric Pump with Cone-shaped Tubes

Understanding frequency response of thermal micropumps using electrical network analogy

Research on output performance of valve-less piezoelectric pump with multi-cone-shaped tubes

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