Доступ предоставлен для: Guest
Портал Begell Электронная Бибилиотека e-Книги Журналы Справочники и Сборники статей Коллекции
International Journal of Fluid Mechanics Research
ESCI SJR: 0.206 SNIP: 0.446 CiteScore™: 0.5

ISSN Печать: 2152-5102
ISSN Онлайн: 2152-5110

Выпуски:
Том 46, 2019 Том 45, 2018 Том 44, 2017 Том 43, 2016 Том 42, 2015 Том 41, 2014 Том 40, 2013 Том 39, 2012 Том 38, 2011 Том 37, 2010 Том 36, 2009 Том 35, 2008 Том 34, 2007 Том 33, 2006 Том 32, 2005 Том 31, 2004 Том 30, 2003 Том 29, 2002 Том 28, 2001 Том 27, 2000 Том 26, 1999 Том 25, 1998 Том 24, 1997 Том 23, 1996 Том 22, 1995

International Journal of Fluid Mechanics Research

DOI: 10.1615/InterJFluidMechRes.v25.i1-3.170
pages 202-211

Effect of the Buoyancy Ratio on the Number of Double-Diffusive Cells in a Rectangular Enclosure

Hwataik Han
Department of Mechanics and Design, Kook Min University Seoul, Korea

Краткое описание

Double diffusive multi-cells are formed in a rectangular enclosure when horizontal temperature and concentration gradients are present in a certain range of parameters. The system parameters are thermal Grashof number, solutal Grashof number, Prandtl number, and Schmidt number for an enclosure with a given aspect ratio. Depending on the ratio of thermal and solutal Grashof numbers flow patterns due to double diffusive natural convection change, as the number of cells change. The flow structure determines the heat and mass transfer characteristics from the vertical surfaces of the cavity. It is the objective of the present study to investigate the effect of the ratio of thermal and solutal buoyant forces on the number of double diffusive cells formed in a vertical rectangular enclosure. An electrochemical copper deposition system is utilized with the vertical electrode maintained at different temperatures. Temperature distribution is measured using a thermocouple probe along the vertical centerline. The concentration distribution of cupric ion in the enclosure is determined by measuring the attenuation of light through the test cell. In well developed cells, concentration is nearly uniform in each cell, and there are large concentration gradients across the interfaces. The temperature distribution shows a stable stratification in each cell and temperature inversion across the cell interfaces. The interfaces are not quite clear in case the cell does not have appreciable size. The number of cells in a cavity is investigated as a function of the buoyancy ratio.


Articles with similar content:

HYDROTHERMAL WAVE CONTROL IN A STEADY STATE EVAPORATING DROPLET
International Heat Transfer Conference 16, Vol.4, 2018, issue
Fei Duan, Xin Zhong
ENHANCING HYPERTHERMIC TREATMENT BY INCORPORATION OF SOME MOLECULAR DYNAMICS (MDS) ASPECTS OF THE PROPAGATION OF A PHASE CHANGE FRONT IN A POLYMERIC FLUID
ICHMT DIGITAL LIBRARY ONLINE, Vol.13, 2008, issue
Steve Hansen, Vojislav Ilic, Rashad Aouf
EXPERIMENTS ON DOUBLE DIFFUSIVE CONVECTION DUE TO HEATING FROM BELOW IN A ROTATING CYLINDRICAL CAVITY
Transport Phenomena in Thermal Engineering. Volume 2, Vol.0, 1993, issue
Shin-Hyung Kang, Jinho Lee, Kwang Min Chun
TRANSIENT RAYLEIGH-BENARD CONVECTION IN A CYLINDER WITH AN ASPECT RATIO OF 4
ICHMT DIGITAL LIBRARY ONLINE, Vol.11, 2004, issue
Seng S. Leong
PROBING MIGRATION OF IONS AT THE OIL-WATER INTERFACE
International Heat Transfer Conference 16, Vol.17, 2018, issue
Boyao Wen, Bo-Feng Bai