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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.2016014504
pages 885-892

EXPERIMENTAL AND NUMERICAL ANALYSIS OF HEAT TRANSFER IN AN ATTIC-SHAPED ENCLOSURE

Francesco Corvaro
Dipartimento di Ingegneria Industriale e Scienze Matematiche (DIISM), Università Politecnica delle Marche, Ancona, Italy
Giorgia Nardini
DIISM, Dipartimento di Ingegneria Industriale e Scienze Matematiche, Università Politecnica delle Marche, Via Brecce Bianche - 60131 Ancona, ITALY
Massimo Paroncini
DIISM, Dipartimento di Ingegneria Industriale e Scienze Matematiche, Università Politecnica delle Marche, Via Brecce Bianche - 60131 Ancona, ITALY
Raffaella Vitali
DIISM, Dipartimento di Ingegneria Industriale e Scienze Matematiche, Università Politecnica delle Marche, Via Brecce Bianche - 60131 Ancona, ITALY

Краткое описание

An experimental and numerical investigation of natural convection in an attic-shaped triangular cavity in winter or nighttime conditions was carried out. The cavity had three isothermal, aluminum walls and a Plexiglas wall. The experimental method used was Particle Image Velocimetry and Fluent 12.1.4 was the numerical software employed. The range of Rayleigh numbers analyzed was from 5·105 to 1·107. The isotherms, velocity maps, and streamlines produced were examined and studied. The results show that for Ra < 6.0·106 two main vortices develop in the enclosure while for Ra > 6.0·106 a third vortex begins to form.


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