Доступ предоставлен для: Guest
Портал Begell Электронная Бибилиотека e-Книги Журналы Справочники и Сборники статей Коллекции
Journal of Porous Media
Импакт фактор: 1.49 5-летний Импакт фактор: 1.159 SJR: 0.43 SNIP: 0.671 CiteScore™: 1.58

ISSN Печать: 1091-028X
ISSN Онлайн: 1934-0508

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

Journal of Porous Media

DOI: 10.1615/JPorMedia.v19.i6.10
pages 471-495

MIXED CONVECTION AND ENTROPY GENERATION IN A POROUS DEEP CAVITY: EFFECT OF UNIFORM AND NONUNIFORM HEATED WALLS

Anirban Chattopadhyay
viswa-bharati, santiniketan
Swapan K. Pandit
Integrated Science Education and Research Centre (ISERC), Visva-Bharati, Santiniketan, West Bengal-731 235, India

Краткое описание

Mixed convection flows in a lid-driven rectangular cavity having aspect ratios of 0.5,1.0,2.0, and 4.0 filled with porous medium are studied computationally using our recently proposed higher order compact scheme presented in Pandit et al. (2007) to investigate influence of uniformly and nonuniformly heated bottom and right walls. The top wall is adiabatic, which is allowed to move in its own plane at a constant speed, while the left vertical wall is maintained at constant cold temperature. We have used a stream function (ψ) - vorticity (ς) formulation of two-dimensional unsteady Navier-Stokes equations with the consideration of the Brinkman-extended Darcy model to simulate the momentum transfer in the porous medium. In addition, local entropy generation distributions are determined based on the obtained dimensionless velocity and temperature values. In order to obtain the results in terms of stream functions, isotherm contours, and Nusselt numbers we have varied the pertinent physical parameters, e.g., Reynolds number (Re), Darcy number (Da) and Prandtl number (Pr) over a wide range of 1 ≤ Re ≤ 103, 10-6 ≤ Da ≤ 10-3 and 0.7 ≤ Pr ≤ 10, respectively, with a fixed Grashof number (Gr) = 105.


Articles with similar content:

NON-DARCIAN AND ANISOTROPIC EFFECTS ON THE CONJUGATE HEAT TRANSFER IN A POROUS ENCLOSURE WITH FINITE THICKNESS WALLS
Journal of Porous Media, Vol.17, 2014, issue 4
Sameh Elsayed Ahmed, Abdelraheem M. Aly
NON-DARCY AND LOCALIZED HEATING EFFECTS ON BENARD CONVECTION IN POROUS ENCLOSURE
Journal of Porous Media, Vol.16, 2013, issue 1
Habibis Saleh, Ishak Hashim
BUOYANCY OPPOSED MIXED CONVECTION IN A TWO-SIDED LID-DRIVEN DIFFERENTIALLY HEATED SQUARE CAVITY FILLED WITH A POROUS MEDIUM
Journal of Porous Media, Vol.13, 2010, issue 12
Manab Kumar Das, Elaprolu Vishnuvardhanarao
CONJUGATE NATURAL CONVECTION IN AN OPEN-ENDED POROUS SQUARE CAVITY
Journal of Porous Media, Vol.16, 2013, issue 4
Habibis Saleh, Ishak Hashim
NUMERICAL SIMULATION OF DOUBLE-DIFFUSIVE MIXED CONVECTION IN A HORIZONTAL ANNULUS UNDER TANGENTIAL MAGNETIC FIELD, WITH A ROTATING OUTER CYLINDER
Heat Transfer Research, Vol.49, 2018, issue 14
Goodarz Ahmadi, Bengt Sunden, Mehdi Bidabadi, Alireza Khoeini Poorfar, Vahid Bordbar