Gotowe bibliografie tematyczne / Electrohydrodynamic (EHD) instability

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Gotowa bibliografia na temat „Electrohydrodynamic (EHD) instability”

Autor: Grafiati
Data publikacji: 6 września 2023

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Artykuły w czasopismach na temat "Electrohydrodynamic (EHD) instability"

1

Feng, Y., and J. Seyed-Yagoobi. "Linear Instability Analysis of a Horizontal Two-Phase Flow in the Presence of Electrohydrodynamic Extraction Force." Journal of Heat Transfer 124, no. 1 (2001): 102–10. http://dx.doi.org/10.1115/1.1414132.

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The flow regimes associated with a horizontal internal two-phase (liquid-vapor) flow in the presence and absence of the electric field are investigated with the linear stability analysis. The momentum interchange due to the entrainment between the two phases is included in the analysis. The presence of the electric field promotes instability by providing the electrohydrodynamic (EHD) extraction force. Qualitative stability maps for the annular two-phase flow are provided with and without the electric field presence. Onset of the instability is compared with the experimental data and it is show
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Almasi, Fatemeh, Manuel Hopp-Hirschler, Abdellah Hadjadj, Ulrich Nieken, and Mostafa Safdari Shadloo. "Coupled Electrohydrodynamic and Thermocapillary Instability of Multi-Phase Flows Using an Incompressible Smoothed Particle Hydrodynamics Method." Energies 15, no. 7 (2022): 2576. http://dx.doi.org/10.3390/en15072576.

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This paper concerns the study of coupled effects of electrohydrodynamic (EHD) and thermocapillary (TC) on the dynamic behaviour of a single liquid droplet. An incompressible Smoothed Particle Hydrodynamic (ISPH) multiphase model is used to simulate EHD-TC driven flows. The complex hydrodynamic interactions are modeled using the continuum surface force (CSF) method, in which the gradient of the interfacial tension and the Marangoni forces are calculated with an approximated error or 0.014% in the calculation of Marangoni force compared to the analytical solutions which is a significant improvem
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Li, Fang, Bo-Fu Wang, Zhen-Hua Wan, Jian Wu, and Mengqi Zhang. "Absolute and convective instabilities in electrohydrodynamic flow subjected to a Poiseuille flow: a linear analysis." Journal of Fluid Mechanics 862 (January 16, 2019): 816–44. http://dx.doi.org/10.1017/jfm.2018.958.

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We present a study of absolute and convective instabilities in electrohydrodynamic flow subjected to a Poiseuille flow (EHD-Poiseuille). The electric field is imposed on two infinite flat plates filled with a non-conducting dielectric fluid with unipolar ion injection. Mathematically, the dispersion relation of the linearised problem is studied based on the asymptotic response of an impulse disturbance imposed on the base EHD-Poiseuille flow. Transverse, longitudinal and oblique rolls are investigated to identify the saddle point satisfying the pinching condition in the corresponding complex w
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Dutta, Satarupa, Abir Ghosh, Partho Sarathi Gooh Pattader, and Dipankar Bandyopadhyay. "Electric field mediated von Kármán vortices in stratified microflows: transition from linear instabilities to coherent mixing." Journal of Fluid Mechanics 865 (February 18, 2019): 169–211. http://dx.doi.org/10.1017/jfm.2018.1023.

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Application of an electric field across the pressure-driven stratified flow of a pair of miscible fluids inside a microchannel manifests interesting electrohydrodynamic (EHD) instabilities. Experiments uncover distinctive instability regimes with an increase in electric field Rayleigh number ($Ra^{\unicode[STIX]{x1D713}}$) – a linear-onset regime, a time-periodic nonlinear regime analogous to the von Kármán vortex street in the downstream and a regime with coherent flow patterns. The experiments also reveal that such linear and nonlinear instabilities can be stimulated non-invasively in a micr
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Moatimid, Galal M., and Mohamed A. Hassan. "The Instability of an Electrohydrodynamic Viscous Liquid Micro-Cylinder Buried in a Porous Medium: Effect of Thermosolutal Marangoni Convection." Mathematical Problems in Engineering 2013 (2013): 1–14. http://dx.doi.org/10.1155/2013/416562.

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The electrohydrodynamic (EHD) thermosolutal Marangoni convection of viscous liquid, in the presence of an axial electric field through a micro cylindrical porous flow, is considered. It is assumed that the surface tension varies linearly with both temperature and concentration. The instability of the interface is investigated for the free surface of the fluid. The expression of the free surface function is derived taking into account the independence of the surface tension of the heat and mass transfer. The transcendental dispersion relation is obtained considering the dependence of the surfac
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He, Xuerao, Pedro A. Vázquez, and Mengqi Zhang. "Numerical analyses of wire-plate electrohydrodynamic flows." Journal of Fluid Mechanics 966 (June 27, 2023). http://dx.doi.org/10.1017/jfm.2023.419.

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We present numerical analyses of two-dimensional electrohydrodynamic (EHD) flows of a dielectric liquid between a wire electrode and two plate electrodes with a Poiseuille flow, using direct numerical simulation and global stability analysis. Both conduction and injection mechanisms for charge generation are considered. In this work we focused on the intensity of the cross-flow and studied the EHD flows without a cross-flow, with a weak cross-flow and with a strong cross-flow. (1) In the case without a cross-flow, we investigated its nonlinear flow structures and linear dynamics. We found that
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Kano, Ichiro. "Effect of Electric Field Distribution Generated in a Microspace on Pool Boiling Heat Transfer." Journal of Heat Transfer 136, no. 10 (2014). http://dx.doi.org/10.1115/1.4027881.

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This study describes the effect of an electric field on nucleate boiling and critical heat flux (CHF) in pool boiling. A dielectric liquid of AE-3000 was used as the working fluid. A heating surface was polished to a surface roughness of 0.05 μm. A microsized electrode, in which slits were provided, was designed to generate a nonuniform electric field and produce electrohydrodynamic (EHD) effects with the application of high dc voltages. The obtained results confirmed CHF enhancement as the EHD effects increased CHF to 86.2 W/cm2 with a voltage of −3000 V, which was four times greater than poo
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Kano, Ichiro, Yuta Higuchi, and Tadashi Chika. "Development of Boiling Type Cooling System Using Electrohydrodynamics Effect." Journal of Heat Transfer 135, no. 9 (2013). http://dx.doi.org/10.1115/1.4024390.

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This paper describes results from an experimental study of the effect of an electric field on nucleate boiling and the critical heat flux (CHF) in pool boiling at atmospheric pressure. A dielectric liquid of HFE-7100 (3 M Co.) was used as working fluid. A heating surface was polished with the surface roughness (Ra) of 0.05 μm. A microsized electrode, in which the slits were provided, was designed in order to generate non uniform high electric fields and to produce electrohydrodynamic (EHD) effects with the application of high voltages. The obtained results confirmed the enhancement of CHF sinc
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Wang, Zhentao, Qian Kong, Bin Li, Jiameng Tian, Kai Yu, and Junfeng Wang. "Electrohydrodynamic instability and disintegration of low viscous liquid jet." Physics of Fluids, November 7, 2022. http://dx.doi.org/10.1063/5.0130381.

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The simple-jet mode can be developed from dripping, dripping faucet (transition), and jetting when subjected to a sufficient strong electric field caused by needle-plated electrode. In present work, the instability and disintegration of an electrified jet of anhydrous ethanol in the electrohydrodynamic (EHD) simple-jet mode are visualized by high-speed camera. A systematic analysis and description on the evolution of the breakup morphology of the charged jet in the simple-jet mode was carried out. In dripping mode at low Weber number, the unstable simple-jet occurs, while the stable simple-jet
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Kano, Ichiro, and Naoki Okamoto. "Experimental Verification of a Prediction Model for Pool Boiling Enhanced by the Electrohydrodynamic Effect and Surface Wettability." Journal of Heat Transfer 139, no. 8 (2017). http://dx.doi.org/10.1115/1.4036040.

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Enhancing of boiling heat transfer by combining the electrohydrodynamic (EHD) effect and surface wettability has been shown to remove the high heat fluxes from electrical devices such as laser diodes, light emitting diodes, and central processing units. However, this phenomenon is not well understood. Our previous studies on the critical heat flux (CHF) of pool boiling have shown that CHF greatly increases with the application of an electric field and that the wall temperature can be decreased to a level with the safe operation of the electrical devices by using a low contact angle with the bo
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Rozprawy doktorskie na temat "Electrohydrodynamic (EHD) instability"

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Rath, Pranaya Kishore. "Experimental Investigation of Electrons In and Above Liquid Helium." Thesis, 2022. https://etd.iisc.ac.in/handle/2005/5838.

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Electrons on the surface of liquid helium form a nearly ideal 2-dimensional electron system (2DES). An electron density up to 2 × 10^9 cm-2, known as the critical electron density, can be achieved on the liquid helium surface, above which an electro-hydrodynamic (EHD) instability sets in, which results in the formation of MEBs. Due to this limitation in maximum possible density, only the classical liquid and solid phases of the 2DES can be accessed in this system. But at the same time, on the surface of thin liquid helium film and with the multi-electron bubbles (MEBs), it may be possible to
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2

Thenkarai, Narayanan Venkat raman. "Numerical modeling of microfluidic two-phase electrohydrodynamic instability." 2010. http://hdl.rutgers.edu/1782.2/rucore10001600001.ETD.000052156.

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Streszczenia konferencji na temat "Electrohydrodynamic (EHD) instability"

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Reddy, Varun, and Jeffrey D. Zahn. "Two Phase Electrohydrodynamic Instability Micromixing." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-80493.

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This work characterizes two phase electrohydrodynamic (EHD) instability micromixing of two immiscible organic and aqueous fluid phases. EHD mixing of the two phase microflow is promoted by creating an unstable flow profile by electrically inducing motion of the phase boundary. The aqueous phase is assumed to be infinitely conducting due to dissolved salt ions, while the organic phase is assumed to be non-conducting. As electrodes are biased, charges accumulate at the aqueous/organic interface. At a critical voltage the interface becomes unstable so that the aqueous and organic layers will mix.
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Narayanan, Venkat R. T., Jianbo Li, Jeffrey D. Zahn, and Hao Lin. "Numerical Modeling of Microfluidic Two-Phase Electrohydrodynamic Instability." In ASME 2008 International Mechanical Engineering Congress and Exposition. ASMEDC, 2008. http://dx.doi.org/10.1115/imece2008-67757.

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Organic-aqueous liquid (phenol) extraction is one of many standard techniques to efficiently purify DNA directly from cells. Effective dispersion of one fluid phase in the other increases the surface area over which biological component partitioning may occur, and hence enhances DNA extraction efficiency. Electrohydrodynamic (EHD) instability can be harnessed to achieve this goal and has been experimentally demonstrated by one of the co-authors (JDZ). In this work, analysis and simulation are combined to study two-phase EHD instability. In the problem configuration, the organic (phenol) phase
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Kano, Ichiro, and Kyohei Sato. "Effect of Electric Field Distribution Generated in a Micro Space on Pool Boiling Heat Transfer." In ASME 2013 11th International Conference on Nanochannels, Microchannels, and Minichannels. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/icnmm2013-73118.

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This paper describes results from an experimental study of the effect of an electric field on nucleate boiling and the critical heat flux (CHF) in pool boiling. A dielectric liquid of AE-3000 (AGC Co. Ltd) was used as working fluid. A heating surface was polished with the surface roughness (Ra) of 0.05 μm. A micro sized electrode, in which the slits were provided, was designed in order to generate non uniform electric field and to produce electrohydrodynamic (EHD) effects with the application of high dc voltages. The obtained results confirmed the enhancement of CHF since the EHD effects incre
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4

Yajima, Takeshi, Akira Yabe, and Hiroshi Maki. "Theoretical Model of Electric Field Effects on the Enhancement of Critical Heat Flux." In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-60080.

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Critical heat flux enhancement by the electrohydrodynamic (EHD) effect has been analyzed quantitatively based on the increased frequency of liquid-vapor interface oscillations around the edge of the bubble. The majority of heat transfer occurs when the liquid film thickness becomes less than 50 μ m, which only occurs once per period. The main mechanism of heat flux enhancement induced by the EHD effect would be a result of an increase in surface tension due to the effect of electric lines of force. By representing the terms of the forces for a change in curvature and the surface tension result
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Cândido, Sílvio, and José C. Páscoa. "Numerical Analysis on the Stability Conditions of an Electrohydrodynamic Jet." In ASME 2020 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/imece2020-24101.

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Abstract The Taylor cone jet is a well-known electrohydrodynamic flow (EHD), usually produced by applying an external electric field to a capillary liquid. The generation of this kind of flow involves a multi-phase and a multi-physics process and its stability has a specific operation window. This operating window is intrinsically dependent on the flow rate and magnitude of the applied electric voltage. In case high voltages are applied to the jet it can atomize and produce an electrospray. Our work presents a numerical study of the process of atomization of a Taylor cone jet using computation
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Morales, Mercedes C., and Jeffrey D. Zahn. "Development of a Diffusion Limited Microfluidic Module for DNA Purification via Phenol Extraction." In ASME 2008 International Mechanical Engineering Congress and Exposition. ASMEDC, 2008. http://dx.doi.org/10.1115/imece2008-68086.

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Purification of Deoxyribonucleic acid (DNA) by organic-aqueous liquid extraction, also called phenol extraction, is a standard technique commonly utilized in biology laboratories. In order to minimize interaction energies, membrane components and proteins naturally partition to the organic (phenol) phase while the DNA stays in the aqueous phase, where it can be easily removed. In recent years, microfluidics has become a driving force toward more efficient and autonomous platforms for fluid based diagnostics, chemical reaction chambers, separation and preparation of biological materials. In thi
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Kano, Ichiro, Yuta Higuchi, and Tadashi Chika. "Development of Boiling Type Cooling System Using Electrostatic and Electroconvection Force." In ASME 2012 Third International Conference on Micro/Nanoscale Heat and Mass Transfer. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/mnhmt2012-75038.

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The paper describes results from an experimental study of the effect of an electric field on nucleate boiling and the critical heat flux (CHF) in pool boiling at atmospheric pressure with polished smooth boiling surface. A micro scaled electrode with slits for bubbles to come out was designed in order to create non uniform high electric field strength and to produce electrohydrodynamics (EHD) convection with the application of dc voltage. The application of high electric field strongly enhanced the heat flux and the heat transfer coefficient. From observations of the behavior of bubbles over t
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