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Journal of Enhanced Heat Transfer
Импакт фактор: 0.562 5-летний Импакт фактор: 0.605 SJR: 0.175 SNIP: 0.361 CiteScore™: 0.33

ISSN Печать: 1065-5131
ISSN Онлайн: 1026-5511

Выпуски:
Том 26, 2019 Том 25, 2018 Том 24, 2017 Том 23, 2016 Том 22, 2015 Том 21, 2014 Том 20, 2013 Том 19, 2012 Том 18, 2011 Том 17, 2010 Том 16, 2009 Том 15, 2008 Том 14, 2007 Том 13, 2006 Том 12, 2005 Том 11, 2004 Том 10, 2003 Том 9, 2002 Том 8, 2001 Том 7, 2000 Том 6, 1999 Том 5, 1998 Том 4, 1997 Том 3, 1996 Том 2, 1995 Том 1, 1994

Journal of Enhanced Heat Transfer

DOI: 10.1615/JEnhHeatTransf.v2.i1-2.80
pages 71-77

Local Flow Structure for Non-Newtonian Fluids in a Periodically Corrugated Wall Channel

D. Bereiziat
LEMTA - CNRS URA 875 - Université de Nancy I - 2, Av. de la Foret de Haye - B.P. 160 - 54504, Vandoeuvre-les-Nancy Cedex - France
R. Devienne
LEMTA CNRS 875 et Université Henri Poincaré, Vandoeuvre-les-Nancy, France
Michel Lebouche
Laboratoire d'Energetique et de Mecanique Theorique et Appliquee Institut National Polytechnique de Lorraine, Universite Henri Poincare - Nancy I 2, Avenue de la Foret de Haye BP 160, F-54504 Vandoeuvre-les-Nancy Cedex France

Краткое описание

Experiments were carried out to characterize the local shear flow inside a periodically corrugated wall channel by use of electrochemical method giving the wall shear rate S and laser-Doppler velocimetry (LDV) for the axial velocity profiles. Both Newtonian fluids and shear-thinning viscous fluids (carboxymethyl-cellulose sodium salt (CMC) additive) are considered, flowing in a range of Reynolds numbers and generalized Reynolds numbers for non-Newtonian fluids determining the following regimes: laminar, transitional and low-Reynolds-number turbulent. Laminar flow, steady motion with a recirculating zone, transition to turbulence with unsteady vortex and three-dimensional instabilities with reducing by the onset of a developed turbulence have been detected.


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