Fluid Mechanics & Transport Phenomena: My PhD journey
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I have generated this podcast through NotebookLM to explain my PhD journey to a general audience. The content has been simplified for accessibility and may not be completely accurate, as it is produced with the help of AI. For more information, see https://doi.org/10.1016/j.elstat.2021.103630.
PhD_reviewPaper.wavHighlights:
The mechanism of liquid surface evaporation enhancement due to EHD is detailed.
Models, numerical methods, and results of related numerical studies have been discussed.
EHD can effectively increase liquid surface evaporation with energy and cost benefits.
Source: N. Zehtabiyan-Rezaie, A. Adamiak, and M. Saffar-Avval, “Enhancement of evaporation from liquid surfaces due to electrohydrodynamic flow: A review”, Journal of Electrostatics, vol. 114, p. 103630, 2021. https://doi.org/10.1016/j.elstat.2021.103630.
Highlights:
An OpenFOAM solver is developed for modeling three-phase EHD-enhanced evaporation.
Productivity and energy consumption of an EHD desalination unit are examined.
Effect of ambient humidity, applied voltage, and number of wires are studied.
EHD-enhanced evaporation descends by increasing the number of wires.
Production per energy for EHD desalination is higher than that of the solar still.
Source: N. Zehtabiyan-Rezaie, M. Saffar-Avval, and K. Adamiak, “Electrohydrodynamic water desalination: Evaluating the productivity and energy consumption”, Desalination, vol. 497, p. 114768, 2021. https://doi.org/10.1016/j.desal.2020.114768.
Highlights:
The study investigates the augmentation of evaporation from saline water using corona discharge-generated electrohydrodynamic (EHD) flow.
Both numerical and experimental methods are employed to analyze the effects of applied voltage and ambient air's relative humidity.
Findings reveal a significant enhancement in evaporation rates, with a 600% increase at 12 kV and 90% relative humidity.
Source: N. Zehtabiyan-Rezaie, M. Saffar-Avval, and K. Adamiak, “On the evaporation enhancement from saline water due to corona discharge generated EHD flow: A numerical and experimental study”, International Communications in Heat and Mass Transfer, vol. 119, p. 104988, 2020. https://doi.org/10.1016/j.icheatmasstransfer.2020.104988.
Highlights:
Heat transfer enhancement by a novel coaxial wire-tube system is examined.
Effects of the Reynolds number, wire length and applied voltage are considered.
Velocity profile, flow pattern and temperature distribution are analyzed.
A maximum heat transfer enhancement of 100% is obtained.
Code: https://github.com/nzhtbyn/buoyantBoussinesqPimpleEHDFoam
Source: N. Zehtabiyan-Rezaie, M. Saffar-Avval, and K. Adamiak, “Forced convection heat transfer enhancement using a coaxial wire-tube corona system”, Journal of Electrostatics, vol. 103, p. 103415, 2020. https://doi.org/10.1016/j.elstat.2019.103415.
Highlights:
Simulation of water surface deformation caused by corona discharge is performed.
An OpenFOAM solver capable of modeling two-phase EHD flow is developed.
Recommendations for equivalent electrical properties of water phase are given.
Velocity distributions and streamlines in the needle-water gap are analyzed.
Average ionic velocity in the tip-water region is calculated.
Source: N. Zehtabiyan-Rezaie, M. Saffar-Avval, and K. Adamiak, “Numerical investigation of water surface deformation due to corona discharge”, Journal of Electrostatics, vol. 96, p. 151-159, 2018. https://doi.org/10.1016/j.elstat.2018.10.015.
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