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Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received November 16, 2013
Accepted January 2, 2014

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Effects of Solutally Dominant Convection on Physical Vapor Transport for a Mixture of Hg2Br2 and Br2 under Microgravity Environments

Geug-Tae Kim^† Moo Hyun Kwon¹

Department of Chemical Engineering, Hannam University, 1646 Yuseong-daero, Yuseong-gu, Daejeon 305-811, Korea ¹Department of Applied Chemistry, Woosuk University, 443 Samnye-ro, Samnye-eup, Wanju-gun, Jeonbuk 565-701, Korea

geugtaekim@gmail.com

Korean Chemical Engineering Research, February 2014, 52(1), 75-80(6), 10.9713/kcer.2014.52.1.75 Epub 3 February 2014

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Abstract

The convective flow structures in the vapor phase on earth are shown to be single unicellular, indicating the solutally dominant convection is important. These findings reflect that the total molar fluxes show asymmetrical patterns in a viewpoint of interfacial distributions. With decreasing the gravitational level form 1 g0 down to 1.0 × 10^(-4) g0, the total molar fluxes decay first order exponentially. It is also found that the total molar fluxes decay first order exponentially_x000D_ with increasing the partial pressure of component B, PB (Torr) form 5 Torr up to 400 Torr. Under microgravity environments less than 1 g0, a diffusive-convection mode is dominant and, results in much uniformity in front of the crystal regions in comparisons with a normal gravity acceleration of 1 g0.

Keywords

Solutally Dominant Convection Microgravity Environment

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