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 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.2016011658
pages 319-345

NUMERICAL INVESTIGATION OF FLUID FLOW AND HEAT TRANSFER IN A C-SHAPED GEOMETRY OF RECTANGULAR CROSS SECTION

Yahia Lasbet
LDMM, Ziane Achour University, Djelfa, Algeria
Ahcène Loubar
Nuclear Research Center of Birine, Djelfa, Algeria
Khaled Loubar
Ecole des Mines de Nantes, 44307 Nantes Cedex 3, France

RESUMO

Three-dimensional simulations are carried out to investigate heat transfer and fluid flow characteristics of a chaotic geometry using a computational fluid dynamics (CFD) soft ware. Heat transfer and pressure drop are investigated for Reynolds numbers ranging from 50 to 1500. The model geometry is created and meshed using the Gambit soft ware. Preliminary simulations using a laminar flow model are carried out to identify the transition Reynolds number. Fluid flow and heat transfer are simulated and the results were compared using both laminar and turbulent flow models (standard k–ε model). Steady-state solvers are adopted to calculate pressure drop, flow and temperature fields. Model validation is carried out by comparing the simulation results for Nusselt and Poiseuille numbers against data from the literature. The simulations clearly highlighted the contribution of secondary flows (vortices) to the enhancement of heat transfer compared to a straight pipe, as well as the earlier occurrence of a transitional flow regime. The increase in the pressure drop remains the main drawback of the chaotic geometries. This disadvantage is avoidable through an optimization of the geometrical arrangement and an adequate choice of the operating conditions.


Articles with similar content:

THREE-DIMENSIONAL NUMERICAL STUDY OF THE PERFORMANCE OF THE INTERCOOLER EQUIPPED WITH VORTEX GENERATORS
Heat Transfer Research, Vol.48, 2017, issue 8
Mohamed Mseddi, Mounir Baccar, Mongi Ben Salem, Hassene Djemel
NUMERICAL INVESTIGATION OF ROUND TURBULENT SWIRLING JET IMPINGEMENT HEAT TRANSFER FROM A HOT SURFACE
Computational Thermal Sciences: An International Journal, Vol.8, 2016, issue 6
Muhammad Ali Rob Sharif
Pareto optimization of heat transfer enhancement of finned-tube heat exchangers with delta-winglet vortex generators
ICHMT DIGITAL LIBRARY ONLINE, Vol.0, 2009, issue
M. Breuer, E. Franz, A. Lemouedda
COMPUTATIONAL ANALYSIS OF FLOW PATTERNS IN ELLIPTICAL DIESEL NOZZLES AT HIGH INJECTION PRESSURES
Atomization and Sprays, Vol.28, 2018, issue 11
Bifeng Yin, Bin Xu, Shenghao Yu, Ze Ye, Huaping Xu, Hekun Jia, Weixin Deng
SLOT JET IMPINGEMENT HEAT TRANSFER ON FLAT AND RIBBED SURFACES FOR HIGH NOZZLE TO PLATE SPACING
Proceedings of the 24th National and 2nd International ISHMT-ASTFE Heat and Mass Transfer Conference (IHMTC-2017), Vol.0, 2017, issue
Anupam Dewan, Anuj Kumar Shukla