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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.v43.i2.50
pages 161-181

Investigation on Influences of Bubble Location and Momentum Transfer Direction on Liquid Turbulence Modification for the Dilute Bubbly Flow

Ming Jun Pang
School of Mechanical Engineering, Changzhou University, Changzhou 213164, Jiangsu Province, China
Jin-Jia Wei
School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, P.R. China; Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong Uniersity, Xi'an, 710049, P.R.China
Bo Yu
Beijing Key Laboratory of Urban Oil and Gas Distribution Technology, China University of Petroleum Beijing 102249, China

Краткое описание

It is very significant for the effective design and operation of bubbly equipments to understand deeply the liquid turbulence modulation mechanism by bubbles. In the present paper, detailed investigations on modulation of bubbles on the liquid turbulence, for the dilute bubbly flow with a low liquid-phase Reynolds number, were carried out with the developed Euler-Lagrange numerical method when bubbles always stayed in different turbulence layers for the horizontal and vertical channels, respectively. The velocity field of the liquid phase was solved with direct numerical simulation (DNS), and the bubble motion was followed with Newtonian motion equations. The present studies show that the liquid-phase turbulence modulation is tightly related to the bubble location and the momentum transfer direction between bubbles and liquid (i. e., the gravity direction); it should be noted that when bubbles are located in the turbulence buffer layer, the opposite phenomena happen to the liquid turbulence modulation by bubbles for the horizontal and vertical channels.


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