Inscrição na biblioteca: Guest
Portal Digital Begell Biblioteca digital da Begell eBooks Diários Referências e Anais Coleções de pesquisa
Heat Transfer Research
Fator do impacto: 0.404 FI de cinco anos: 0.8 SJR: 0.264 SNIP: 0.504 CiteScore™: 0.88

ISSN Imprimir: 1064-2285
ISSN On-line: 2162-6561

Volumes:
Volume 51, 2020 Volume 50, 2019 Volume 49, 2018 Volume 48, 2017 Volume 47, 2016 Volume 46, 2015 Volume 45, 2014 Volume 44, 2013 Volume 43, 2012 Volume 42, 2011 Volume 41, 2010 Volume 40, 2009 Volume 39, 2008 Volume 38, 2007 Volume 37, 2006 Volume 36, 2005 Volume 35, 2004 Volume 34, 2003 Volume 33, 2002 Volume 32, 2001 Volume 31, 2000 Volume 30, 1999 Volume 29, 1998 Volume 28, 1997

Heat Transfer Research

DOI: 10.1615/HeatTransRes.2018019759
pages 787-802

NUMERICAL STUDY OF THE EFFECT OF SIDE-WALL INCLINATION ANGLES ON NATURAL CONVECTION IN A 3D TRAPEZOIDAL ENCLOSURE FILLED WITH TWO-LAYER NANOFLUID AND AIR

Mahmoud Salari
Department of Mechanical Engineering, Imam Hossein University, Tehran, Iran
Masoud Hasani Malekshah
Department of Mechanical Engineering, Imam Hossein University, Tehran, Iran
Emad Hasani Malekshah
Faculty of Engineering, Department of Mechanical Engineering, University of Isfahan, Hezar Jerib Avenue, Isfahan 81746-73441, Iran; Department of Mechanical Engineering, Imam Hossein University, Tehran, Iran

RESUMO

The influences of side-wall inclination angles of a trapezoidal enclosure filled with two-layer fluids (air and MWCNT–water nanofluid) heated partially from inclined walls on natural convection are investigated numerically. The inclination angles of the side walls varied in a small range of –4.3° ≤ Φ ≤ 4.3° which respectively corresponded to the aspect ratio variation of 0.4 < AR < 1.6 for a trapezoidal enclosure. The simulations were performed for the Rayleigh numbers 103Ra ≤ 106 and solid volume fractions φ = 0.004 and 0.001. The streamlines, isotherms, local and average Nusselt numbers, and dimensionless velocity in the 3D trapezoidal enclosure are presented. The results show that the aspect ratios or the inclination angles of side walls have considerable effects on the fluid flow and heat transfer characteristics. Also, the local and average Nusselt numbers are increased with increasing inclination angles of side walls, solid volume fractions, and Rayleigh numbers.


Articles with similar content:

SIMULATION OF NATURAL CONVECTION OF AN Al2O3/WATER NANOFLUID IN A COMPLEX WAVY-WALL CAVITY USING THE LATTICE BOLTZMANN METHOD
Heat Transfer Research, Vol.50, 2019, issue 15
Alireza Shahriari, Mohammad Rahnama, Ebrahim Jahanshahi Javaran
MIXED CONVECTION FLOW OF Al2O3–WATER NANOFLUID IN A TWO-SIDED LID-DRIVEN CAVITY WITH WAVY WALLS
Heat Transfer Research, Vol.49, 2018, issue 2
Hasan Karabay
HEAT TRANSFER ENHANCEMENT OF UNIFORMLY/LINEARLY HEATED SIDE WALL IN A SQUARE ENCLOSURE UTILIZING ALUMINA−WATER NANOFLUID
Computational Thermal Sciences: An International Journal, Vol.9, 2017, issue 3
Senthil Kumar Arumugam, Sathiyamoorthy Murugesan, Ali J. Chamkha, Saritha Natesan
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
CONJUGATE NATURAL CONVECTION IN AN OPEN-ENDED POROUS SQUARE CAVITY
Journal of Porous Media, Vol.16, 2013, issue 4
Habibis Saleh, Ishak Hashim