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Essence of thermal convection for physical vapor transport of mercurous chloride in regionsof high vapor pressures

이경환|최정길|김극태
한국결정성장학회 (The Korea Association Of Crystal Growth, Inc.)|2007.12|한국결정성장학회지 (Journal of the Korean Crystal Growth and Crystal Technology)|제17권 제6호|pp. 231-237

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초록

Abstract

For an aspect ratio (transport length-to-width) of 5, Pr = 3.34, Le = 0.078, Pe = 4.16, Cv = 1.01, PB = 50 Torr, only thermally buoyancy-driven convection (Gr = 4.83 × 10 5 ) is considered in this study in spite of the disparity in the molecular weights of the component A (Hg2Cl2) and B which would cause thermally and/or solutally buoyancy-driven convection. The crystal growth rate and the maximum velocity vector magnitude are decreased exponentially for 3 ≤ Ar ≤ 5, for (1) adiabatic walls and (2) the linear temperature profile, with a fixed source temperature. This is related to the finding that the effects of side walls tend to stabilize convection in the growth reactor. The rate for the linear temperature profiles walls is slightly greater than for the adiabatic walls for varied temperature differences and aspect ratios. With the imposed thermal profile, a fixed source region, both the rate and the maximum velocity vector magnitude increase linearly with increasing the temperature difference for 10 ≤ ΔT ≤ 50 K.e

참고문헌 (15)

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관련 논문AI추천

Parametric studies on convection during the physical vapor transport of mercurous chloride (Hg2Cl2)김극태, 이경환한국결정성장학회 · 한국결정성장학회지2004 · 제14권 제6호Convective-diffusive transport in mercurous chloride (Hg2Cl2) crystal growthGeug-Tae Kim청정에너지연구소 · Journal of Ceramic Processing Research2005 · 제6권 제2호Ground-based model study for spaceflight experiments under microgravity environmentson thermo-solutal convection during physical vapor transport of mercurous chloride김극태, 이경환, 최정길한국결정성장학회 · 한국결정성장학회지2007 · 제17권 제6호Generic studies on thermo-solutal convection of mercurous chloride system of Hg2Cl2 and Ne during physical vapor transport김극태, 이경환, 최정길한국결정성장학회 · 한국결정성장학회지2009 · 제19권 제1호Effects of convection on physical vapor transport of Hg2Cl2 in the presence of Kr - Part I: under microgravity environments김극태, 이용근한국결정성장학회 · 한국결정성장학회지2013 · 제23권 제1호Effects of total pressure and gravity level on the physical vapor transport of Hg2Cl2-Cl2 system권무현, 김극태, 최정길한국결정성장학회 · 한국결정성장학회지2009 · 제19권 제3호

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