지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2007.1
- 수록면
- 256 - 263 (8page)
이용수
초록· 키워드
오류제보하기
For PB = 50 Torr, PT = 5401Torr, TS = 450
o
C, ΔT = 20 K, Ar = 5, Pr = 3.34, Le = 0.01, Pe = 4.16, Cv = 1.05, adiabatic
and linear thermal profiles at walls, the intensity of solutal convection (solutal Grashof number Grs = 7.86 × 10
6
) is greater
than that of thermal convection (thermal Grashof number Grt = 4.83 × 10
5
) by one order of magnitude, which is based on
the solutally buoyancy-driven convection due to the disparity in the molecular weights of the component A (Hg2Cl2) and B
(He). With increasing the partial pressure of component B from 20 up to 800 Torr, the rate is decreased exponentially. It is
also interesting that as the partial pressure of component B is increased by a factor of 2, the rate is approximately reduced
by a half. For systems under consideration, the rate increases linearly and directly with the dimensionless Peclet number
which reflects the intensity of condensation and sublimation at the crystal and source region. The convective transport
decreases with lower g level and is changed to the diffusive mode at 0.1 g0. In other words, for regions in which the g
level is 0.1 g0 or less, the diffusion-driven convection results in a parabolic velocity profile and a recirculating cell is not
likely to occur. Therefore a gravitational acceleration level of less than 0.1 g0 can be adequate to ensure purely diffusive
transport.p
목차
등록된 정보가 없습니다.
참고문헌 (10)
참고문헌 신청
/ / Parametric studies on con-
/ 1970 / Purification and growth of mercurous chloride sin-gle crystals : 173 ~
/ 1981 / Numerical modeling of difusive-convective physicalvapor transport in cylindrical vertical ampoules : 426 ~
/ 1989 / Evalua-tion of transport conditions during PVT : 41 ~
/ 1992 / Efectsof buoyancy-driven flow and thermal boundary condi-tions on physical vapor transport : 49 ~
/ 1970 / Purification and growth of mercurous chloride sin-gle crystals : 173 ~
/ 1981 / Numerical modeling of difusive-convective physicalvapor transport in cylindrical vertical ampoules : 426 ~
/ 1989 / Evalua-tion of transport conditions during PVT : 41 ~
/ 1992 / Efectsof buoyancy-driven flow and thermal boundary condi-tions on physical vapor transport : 49 ~
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