Доступ предоставлен для: Guest
Портал Begell Электронная Бибилиотека e-Книги Журналы Справочники и Сборники статей Коллекции
Heat Transfer Research
Импакт фактор: 0.404 5-летний Импакт фактор: 0.8 SJR: 0.264 SNIP: 0.504 CiteScore™: 0.88

ISSN Печать: 1064-2285
ISSN Онлайн: 2162-6561

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

Heat Transfer Research

DOI: 10.1615/HeatTransRes.2014003782
pages 63-89

INFLUENCE OF AN ADIABATIC SQUARE CYLINDER ON HYDRODYNAMIC AND THERMAL CHARACTERISTICS IN A TWO-DIMENSIONAL BACKWARD-FACING STEP CHANNEL

Dipankar Chatterjee
Academy of Scientific and Innovative Research (AcSIR), CSIR-Central Mechanical Engineering Research Institute, Durgapur-713209, India; Advanced Design and Analysis Group, CSIR-Central Mechanical Engineering Research Institute Durgapur-713209, India
Amrita Sengupta
Department of Mechanical Engineering, National Institute of Technology Durgapur, Durgapur-713209, India
Nandini Debnath
Department of Mechanical Engineering, National Institute of Technology Durgapur, Durgapur-713209, India
Sudipta De
Simulation & Modeling Laboratory, CSIR-Central Mechanical Engineering Research Institute, Durgapur-713209, India

Краткое описание

The work demonstrates numerically the influence of an adiabatic cylinder of square cross section on the flow and heat transfer characteristics within a two-dimensional backward-facing step channel. The study was conducted for a Reynolds number range of 1−200 (in the steady laminar regime) with a fixed Prandtl number of 0.71 (air). Additionally, simulations are also conducted for Reynolds numbers of 104 and 2·104 (unsteady turbulent regime). The numerical simulation is performed by deploying a finite volume-based commercial solver FLUENT. Different cross stream positions of the cylinder are considered to show the positional effect of an obstacle on the overall flow and heat transfer pattern. The flow and thermal fields are demonstrated through the streamlines and isotherm profiles for different Reynolds numbers and cylinder positions. The global flow and heat transfer quantities such as the reattachment length, drag coefficient, local and average Nusselt numbers are computed and presented. A significant heat transfer augmentation due to the presence of the cylinder is observed as compared to the unobstructed case (without a cylinder). Furthermore, it is observed that the heat transfer augmentation is stronger for the case of a square cylinder in comparison with a circular one introduced into the same channel. Finally, correlations are devised for the drag coefficient and Nusselt number for the above range of conditions.


Articles with similar content:

Numerical Study on Entropy Generation for Mixed Convection in Square Enclosures for IsoThermally and Non-IsoThermally Hot Bottom Wall
International Heat Transfer Conference 15, Vol.26, 2014, issue
Tanmay Basak, Monisha Roy, Satyajit Roy
EFFECTS OF BLOCKAGE RATIO AND PRANDTL NUMBER ON STEADY FLOW AND HEAT TRANSFER AROUND AN INCLINED SQUARE CYLINDER
Heat Transfer Research, Vol.46, 2015, issue 6
Amin Behzadmehr, Alireza Hossein Nezhad, Jaber Aboueian-Jahromi
HEAT TRANSFER AND FLUID FLOW ANALYSIS FOR AN ARRAY OF INTERRUPTED PLATES, POSITIONED OBLIQUELY TO THE FLOW DIRECTION
International Heat Transfer Conference 8, Vol.2, 1986, issue
Mohammed Faghri, Yutaka Asako
Experimental Determination of Convective Heat Losses Inside an Isothermal Cubic Cavity Opened on One Face
ICHMT DIGITAL LIBRARY ONLINE, Vol.0, 1985, issue
Milos Pavlovic, Franqois Penot
NUMERICAL STUDY OF NATURAL CONVECTION FOR Cu AND TiO2 NANOFLUIDS INSIDE DIFFERENT ENCLOSURES
ICHMT DIGITAL LIBRARY ONLINE, Vol.0, 2017, issue
Bengt Sunden, Jin Wang, Sahar A. Abbood, Zan Wu