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: 1.752 5年インパクトファクター: 1.487 SJR: 0.43 SNIP: 0.762 CiteScore™: 2.3

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

巻:
巻 23, 2020 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.v19.i10.20
pages 853-870

IRREVERSIBILITY ANALYSIS IN MIXED CONVECTION FLOW IN A POROUS CHANNEL WITH VISCOUS DISSIPATION

Amel Tayari
Chemical and Process Engineering Department, Engineers National School of Gabes, Gabes University, Applied Thermodynamics Unit, Omar Ibn El Khattab St., 6029 Gabes, Tunisia
Rahma Bouabda
Chemical and Process Engineering Department, Engineers National School of Gabes, Gabes University, Applied Thermodynamics Unit, Omar Ibn El Khattab St., 6029 Gabes, Tunisia
Mourad Magherbi
Gabès University, Civil Engineering Department, Higher Institute of Applied Sciences and Technology, Omar Ibn El Khattab Street, 6029 Gabès, Tunisia

要約

Various constraints acting on a flow, such as heat transfer, viscous fluid friction, and chemical reaction, are sources of irreversibility and therefore responsible for entropy generation. In this paper, the mixed convection with viscous dissipation effect in an inclined channel filled with a saturated porous medium is investigated numerically, by using the Darcy-Brinkman model. The Navier-Stokes and energy equations are solved by classic Boussinesq approximation. First, the effect of the Darcy number on the total entropy generation in the horizontal porous channel is investigated in the absence and in the presence of viscous the dissipation term. In this case, the Prandtl number and the Brinkman number are considered as parameters. The contribution of the different irreversibility causes on the total entropy generation is analyzed by the investigation of the Bejan number versus Darcy number, with the Prandtl number as parameter. Next, the fluctuations of the transient total entropy generation were investigated when the inclination angle varies from 0 deg to 180 deg. Moreover, the effect of the channel inclination angle on both the entropy generation and the Bejan number was investigated. It was found that the total entropy generation is maximum at inclination angle close to 70 deg and minimum at 0 deg and 180 deg.


Articles with similar content:

NATURAL CONVECTION HEAT TRANSFER IN A POROUS CAVITY IN THE PRESENCE OF A BIOCHEMICAL HEAT SOURCE WHICH IS DEPENDENT ON SOLUTE CONCENTRATION GENERATION RATE
Journal of Porous Media, Vol.15, 2012, issue 4
Mohammad Hassan Kayhani, E. Shakeri, Mohsen Nazari
FLOW SUBJECTED TO A POROUS BLOCK: INFLUENCE OF BODY ASPECT RATIO ON ENTROPY GENERATION RATE
Journal of Porous Media, Vol.15, 2012, issue 2
Bekir S. Yilbas, S. Z. Shuja
ENTROPY ANALYSIS OF UNSTEADY MAGNETIC FLOW THROUGH A POROUS PIPE WITH BUOYANCY EFFECTS
Journal of Porous Media, Vol.16, 2013, issue 9
Adetayo S. Eegunjobi, Oluwole Daniel Makinde, Tirivanhu Chinyoka
NUMERICAL STUDY OF PHASE CHANGE CHARACTERISTICS IN A VERTICAL AND INCLINED POROUS CHANNEL USING THERMAL NONEQUILIBRIUM MODEL
Journal of Porous Media, Vol.19, 2016, issue 12
Mohammed Nima
NUMERICAL STUDY ON TRANSIENT MIXED CONVECTION AND ENTROPY GENERATION IN AN SKEWED VENTILATED ENCLOSURE
3rd Thermal and Fluids Engineering Conference (TFEC), Vol.22, 2018, issue
Neha Gupta, A. K. Nayak