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Energies 2016, 9(8), 657; doi:10.3390/en9080657

Electromagnetohydrodynamic Effects on Steam Bubble Formation in Vertical Heated Upward Flow

1
Young Researchers and Elite Club, Omidiyeh Branch, Islamic Azad University, Omidiyeh 6373193719, Iran
2
Department of Mechanical Engineering, Sanandaj Branch, Islamic Azad University, Sanandaj 6616935391, Iran
3
Department of Energy Engineering, Faculty of Environment and Energy, Science and Research Branch, Islamic Azad University, Tehran 1477893855, Iran
4
Department of Mechanical Engineering, Izeh Branch, Islamic Azad University, Izeh 6391997699, Iran
5
Department of Mechanical Engineering, Shiraz Branch, Islamic Azad University, Shiraz 7473171987, Iran
6
Department of Mechanical, Robotics and Energy Engineering, Dongguk University-Seoul, 30 Pildong-ro 1gil, Jung-gu, Seoul 04620, Korea
*
Author to whom correspondence should be addressed.
Academic Editor: Enrico Sciubba
Received: 31 May 2016 / Revised: 2 July 2016 / Accepted: 2 August 2016 / Published: 18 August 2016
View Full-Text   |   Download PDF [354 KB, uploaded 18 August 2016]   |  

Abstract

In this paper, the modeling of a steady state two phase flow heated through a vertical upward flow under electro-magneto-hydro-dynamic forces is presented. The thermal non-equilibrium, non-homogeneous, two-phase flow model consisting of mass, momentum and energy conservation in each phase has been adjusted for subcooled inlet conditions close to saturation. The P-1 approximation, viscous dissipation and Joule heating are included in the energy equations. It was seen that the Lorentz force can decrease and postpone the bubble generation, as well as affect the slip velocity, flow forces, viscous dissipation and Joule heating. Furthermore, two correlations for the slip velocity under magnetohydrodynamic (MHD) forces are presented. As shown, skin friction and Joule heating increase with the magnetic field strength. View Full-Text
Keywords: electromagnetohydrodynamic; non-homogeneous; Joule heating; non-equilibrium two-phase flow; thermal radiation; P-1 approximation; Lorentz force; vertical tube electromagnetohydrodynamic; non-homogeneous; Joule heating; non-equilibrium two-phase flow; thermal radiation; P-1 approximation; Lorentz force; vertical tube
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Mirzaee, M.; Hooshmand, P.; Ahmadi, H.; Balotaki, H.K.; KhakRah, H.; Abdollahzadeh Jamalabadi, M.Y. Electromagnetohydrodynamic Effects on Steam Bubble Formation in Vertical Heated Upward Flow. Energies 2016, 9, 657.

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