ライブラリ登録: Guest
Begell Digital Portal Begellデジタルライブラリー 電子書籍 ジャーナル 参考文献と会報 リサーチ集
Journal of Porous Media
インパクトファクター: 1.49 5年インパクトファクター: 1.159 SJR: 0.43 SNIP: 0.671 CiteScore™: 1.58

ISSN 印刷: 1091-028X
ISSN オンライン: 1934-0508

巻:
巻 22, 2019 巻 21, 2018 巻 20, 2017 巻 19, 2016 巻 18, 2015 巻 17, 2014 巻 16, 2013 巻 15, 2012 巻 14, 2011 巻 13, 2010 巻 12, 2009 巻 11, 2008 巻 10, 2007 巻 9, 2006 巻 8, 2005 巻 7, 2004 巻 6, 2003 巻 5, 2002 巻 4, 2001 巻 3, 2000 巻 2, 1999 巻 1, 1998

Journal of Porous Media

DOI: 10.1615/JPorMedia.v21.i4.40
pages 343-362

DOUBLE-DIFFUSIVE MIXED CONVECTION IN A COMPOSITE POROUS ENCLOSURE WITH ARC-SHAPED MOVING WALL: TORTUOSITY EFFECT

Muneer A. Ismael
Mechanical Engineering Department, Engineering College, University of Basrah, Basrah 61004, Iraq

要約

A double-diffusive mixed convection in a lid-driven partially layered porous enclosure is addressed numerically in this paper. The mass diffusivity coefficient of the porous medium is determined based on the tortuosity and porosity model. The left wall is kept at constant hot temperature and high concentration. The right wall is arc shaped, being driven, and kept at constant cold temperature and low concentration. The horizontal walls are thermally insulated. The studied pertinent parameters are the Lewis number (0.5 ≤ Le ≤ 5), buoyancy ratio (–7 ≤ N ≤ 7), arc-shaped wall speed (–100 ≤ ω ≤ 100), and thermal Rayleigh number (103 ≤ Ra ≤ 106). The other fixed parameters are the Prandtl number, Pr = 0.71 (air), Darcy number, Da = 10-3, and porous layer thickness Xp = 0.5. The results show that for Ra ≥ 105, there is a significant effect of considering the real coefficient of mass diffusivity on both heat and mass transfer. Interesting competitions among the buoyancy ratio, direction of the arc-shaped wall speed, and Lewis number are recorded and discussed in detail.


Articles with similar content:

NUMERICAL STUDY ON THE EFFECT OF MAGNETIC FIELD IN A POROUS ENCLOSURE USING NANOFLUID WITH MID-HORIZONTAL MOVING LID: BRINKMAN-FORCHHEIMER EXTENDED DARCY MODEL
Journal of Porous Media, Vol.21, 2018, issue 5
N. Nithyadevi, A. Shamadhani Begum
Radon-222 Exhalation Rates from Phosphogypsum-Bearing Embankment Subjected to Constant Temperature and Fixed Activity Concentration
Journal of Porous Media, Vol.8, 2005, issue 2
J. A. Rabi
CONJUGATE NATURAL CONVECTION IN AN OPEN-ENDED POROUS SQUARE CAVITY
Journal of Porous Media, Vol.16, 2013, issue 4
Habibis Saleh, Ishak Hashim
NUMERICAL STUDY OF A MIXED CONVECTION OF NANOFLUID IN A CAVITY FILLED WITH A POROUS MEDIUM FOR DIFFERENT LOCATIONS OF THE HEAT SOURCES
Second Thermal and Fluids Engineering Conference, Vol.41, 2017, issue
Ali Al-Zamily
MAGNETO CONVECTION HEAT TRANSFER IN A POROUS SQUARE CAVITY USING LOCAL THERMAL NON-EQUILIBRIUM APPROACH
Special Topics & Reviews in Porous Media: An International Journal, Vol.10, 2019, issue 2
N. Nithyadevi, Muthu Rajarathinam