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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 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.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

Краткое описание

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.


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