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Портал Begell Электронная Бибилиотека e-Книги Журналы Справочники и Сборники статей Коллекции
International Journal of Fluid Mechanics Research
ESCI SJR: 0.206 SNIP: 0.446 CiteScore™: 0.5

ISSN Печать: 2152-5102
ISSN Онлайн: 2152-5110

Выпуски:
Том 46, 2019 Том 45, 2018 Том 44, 2017 Том 43, 2016 Том 42, 2015 Том 41, 2014 Том 40, 2013 Том 39, 2012 Том 38, 2011 Том 37, 2010 Том 36, 2009 Том 35, 2008 Том 34, 2007 Том 33, 2006 Том 32, 2005 Том 31, 2004 Том 30, 2003 Том 29, 2002 Том 28, 2001 Том 27, 2000 Том 26, 1999 Том 25, 1998 Том 24, 1997 Том 23, 1996 Том 22, 1995

International Journal of Fluid Mechanics Research

DOI: 10.1615/InterJFluidMechRes.2018018422
pages 199-209

FLOW AND HEAT TRANSFER DUE TO IMPINGING ANNULAR JET

Tarun Kanti Pal
Department of Mechanical Engineering, College of Engineering and Management, Kolaghat 721171, India
Himadri Chattopadhyay
Department of Mechanical Engineering, Jadavpur University, Kolkata − 700032, West Bengal, India
Dipak Kumar Mandal
Deptartment of Mechanical Engineering, College of Engineering & Management, Kolaghat, P.O: K.T.P.P. Township, Midnapore (E) - 721171, West Bengal, India

Краткое описание

It is well known that significant numbers of investigations have studied impinging circular jets; relatively fewer studies have dealt with annular jets. In this work, numerical investigations predict the transport phenomena and Nusselt number distribution of laminar-turbulent annular jets on a surface due to impingement. For analysis purposes, the annular jet characteristics are compared with a circular jet at the nozzle exit with the same Reynolds number and the same amount of mass and momentum efflux. The Reynolds number is defined on the basis of the width of the annular part of the jet. It was found that heat transfer from the annular jet was 20%–30% less than for the circular jet. The peak heat transfer zone is observed downstream of the annular ring. This location moves downstream as the Reynolds number increases. The skin friction pattern shows a similar trend. The nature of distribution of the Nusselt number over the impinging surface scales with Re0.54 for the laminar region and with Re0.66 for the turbulent region.

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