On the Modeling and Simulation of Ion Drag Electrohydrodynamic Micropumps

Hasnain, Saquib; Bakshi, A.; Selvaganapathy, P. Ravi; Ching, C.Y.

doi:10.1115/1.4004024

Cited by 9 publications

(3 citation statements)

References 23 publications

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“…Mohammed Hasnain et al. developed a comprehensive numerical model for injection micropumps by solving Poisson and charge conservation equations to specify the electric body force within the flow domain [91]. The charge distribution at the electrode was assumed to be a function of the magnitude and gradient of the electric field at the electrode surface.…”

Section: Geometry and Arrangement Of Electrodementioning

confidence: 99%

A systematic overview of electrode configuration in electric‐driven micropumps

et al. 2022

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Accurate manipulation of fluids in microfluidic devices is an important factor affecting their functions. Since the emergence of microfluidic technology to transport fluids in microchannels, the electric field has been utilized as an effective dynamic pumping mechanism. This review attempts to provide a fundamental insight of the various electric-driven flows in microchannels and their working mechanisms as micropumps for microfluidic devices.Different electrokinetic mechanisms implemented in electrohydrodynamic-, electroosmosis-, electrothermal, and dielectrophoresis-based micropumps are discussed. A detailed description of different mechanisms is presented to provide a comprehensive overview on the key parameters used in electric micropumps. Furthermore, electrode configurations and their shapes in different micropumps are explored and categorized to provide conclusive information for the selection of efficient, simple, and affordable strategies to transport fluids in microfluidic devices. In this paper, recent theoretical, numerical and experimental investigations are covered to provide a better insight both on the operational mechanisms and strategies for lab-on-chip applications.

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Section: Geometry and Arrangement Of Electrodementioning

confidence: 99%

A systematic overview of electrode configuration in electric‐driven micropumps

et al. 2022

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“…Lee et al [11] employed commercial Finite Element package COMSOL Multiphysics to and conducted a parametric numerical studies on the 3D micropillar electrodes. Kazemi et al [9], [13] inspected the objective of testing the impact of asymmetry in the electrode geometry (3D and 2D) on the performance of micropump by using COMSOL Multiphysics under the analysis of numerical study. Their study revealed that asymmetric electrodes will outcome in meaningfully lower power consumption with higher pressure generation than conventional symmetric electrode designs.…”

Section: Introductionmentioning

confidence: 99%

3D Finite Difference Formulation and Simulation of EHD Ion-Drag Model

Kamboh,

Ghoto

et al. 2022

VFAST trans. math.

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This paper presents the simulation of electrohydrodynamically driven micropump obtained by using 3D ﬁnite difference method. EHD governing equations are discretized and then explicitly deﬁned for output parameters. A 3D prototype of ion-drag micropump with symmetric electrodes is modeled and simulated for the velocity, the pressure, electric potential and electric ﬁeld. The objective of this study was to evaluate the results obtained by ﬁnite difference method (FDM) with the results obtained by a ﬁnite element method (FEM) basedsimulation package COMSOL Multiphysics. The comparison reveals that the numerical simulation results obtained by both the methods are appreciably closeto each other. The simulation results are also compared with the existing ex- perimental data and it was found that there are not high discrepancies between simulation and experimental results. The paper concludes that in case of regular geometries of ion-drag micropump the FDM is easy to implement and provides more control on different parameters involved in the simulation as compared to built-in ﬁnite element method based package.

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“…In extending the application of ionic wind devices, several electrode geometries (e.g., needle-to-mesh, pin-to-plate, wire-rod, and wire-to-plate) have been proposed to increase ionic wind velocity and conversion efficiency [11,12]. Qiu et al [13] experimentally and theoretically analyzed the ionic wind velocity of serial-staged electrohydrodynamic (EHD) gas pumps using needle array-to-ring and needle array-to-mesh electrodes.…”

Section: Introductionmentioning

confidence: 99%

Parametric Study and Optimization of Flow Characteristics of Wire-Nonparallel Plate-Type Electrostatic Air Accelerators

Zhang

Wang

et al. 2018

Journal of Fluids Engineering

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Wire and nonparallel plate electrode-type electrostatic air accelerators have attracted significant interest. The physical process involved in using accelerators is complicated. Moreover, mechanisms are unclear, especially for accelerators with double- and multiwire electrodes. In this study, the two-dimensional (2D) model of a wire-nonparallel plate-type accelerator validated by experiments is established with a finite element method. Onset voltage, average current, and outlet average velocity are analyzed with respect to different parameters. Onset voltage is derived by the proposed quadratic regression extrapolation method. Moreover, current is affected by interference and discharge effects, while velocity is also influenced by the suction effect. For the single-wire electrode, high wind speed can be obtained by either increasing channel slope or placing the wire near the entry section. For the double-wire electrode, velocity can be further increased when one of the wires is placed near the inlet and the distance between the two wires is widened. Comparatively, the velocity of the three-wire electrode is higher with larger gaps between wires and stronger discharge effect. The highest velocity is obtained by the four-wire electrode. Comparisons indicate that higher velocity can be obtained with weaker interference effect, stronger suction effect, and intensified discharge effect. Optimum parameter combinations are considered by the Taguchi method. Consequently, velocity can be enhanced by more than 39% after optimization compared with the reference design.

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On the Modeling and Simulation of Ion Drag Electrohydrodynamic Micropumps

Cited by 9 publications

References 23 publications

A systematic overview of electrode configuration in electric‐driven micropumps

A systematic overview of electrode configuration in electric‐driven micropumps

3D Finite Difference Formulation and Simulation of EHD Ion-Drag Model

Parametric Study and Optimization of Flow Characteristics of Wire-Nonparallel Plate-Type Electrostatic Air Accelerators

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