Abonnement à la biblothèque: Guest
Portail numérique Bibliothèque numérique eBooks Revues Références et comptes rendus Collections
International Journal of Fluid Mechanics Research
ESCI SJR: 0.206 SNIP: 0.446 CiteScore™: 0.9

ISSN Imprimer: 2152-5102
ISSN En ligne: 2152-5110

Volumes:
Volume 47, 2020 Volume 46, 2019 Volume 45, 2018 Volume 44, 2017 Volume 43, 2016 Volume 42, 2015 Volume 41, 2014 Volume 40, 2013 Volume 39, 2012 Volume 38, 2011 Volume 37, 2010 Volume 36, 2009 Volume 35, 2008 Volume 34, 2007 Volume 33, 2006 Volume 32, 2005 Volume 31, 2004 Volume 30, 2003 Volume 29, 2002 Volume 28, 2001 Volume 27, 2000 Volume 26, 1999 Volume 25, 1998 Volume 24, 1997 Volume 23, 1996 Volume 22, 1995

International Journal of Fluid Mechanics Research

DOI: 10.1615/InterJFluidMechRes.v36.i1.20
pages 30-42

Unsteady Boundary Layer Flow Induced by Accelerating Motion Near the Rear Stagnation Point in a Micropolar Fluid

Y. Y. Lok
Faculty of Manufacturing Engineering, Universiti Teknikal Malaysia Melaka 75450 Ayer Keroh, Melaka, Malaysia
Norsarahaida Saidina Amin
Department of Mathematics, Faculty of Science, University Technology Malaysia, 81300 Skudai, Johor, Malaysia
Ioan Pop
Department of Applied Mathematics, Babes-Bolyai University, 400084 Cluj-Napoca, Romania

RÉSUMÉ

The unsteady boundary layer flow of a micropolar fluid induced by a two-dimensional body, which is started impulsively from rest, is studied in this paper. The variation with time t of the external stream V(t) is assumed to be of the form V(t) = 1 − exp(−αtm), where α ≥ 0 means a coefficient of acceleration and m is an arbitrary integral value. The problem is formulated for the flow at the rear stagnation point on an infinite plane wall. Numerical solutions of the unsteady boundary layer equations are obtained using an implicit finite-difference scheme known as the Keller's box method. Results are given for the velocity and microrotation profiles, as well as for the dimensionless time elapsed before the boundary layer begins to separate from the wall. It is found that the dimensionless time elapsed before separation takes place is lower for a micropolar fluid (K ≠ 0) than for a Newtonian fluid (K = 0), where K denotes the micropolar or material parameter.


Articles with similar content:

Magnetohydrodynamic Free Convection of a Large Prandtl Number Liquid Over a Nonisothermal Two-Dimensional Body
International Journal of Fluid Mechanics Research, Vol.33, 2006, issue 2
Mohamed F. El-Amin, M. A. EL-Hakiem, Rama Subba Reddy Gorla
FLOW AND HEAT TRANSFER DUE TO STRETCHING SURFACE IN AN ANISOTROPIC POROUS MEDIUM FILLED WITH A VISCOELASTIC FLUID
Journal of Porous Media, Vol.14, 2011, issue 6
Ioan Pop, Saleem Obaidat, M. Mustafa, Tasawar Hayat
Transient Boundary Layer in Stagnation-Point Flow of a Micropolar Fluid Over a Stretching Sheet
International Journal of Fluid Mechanics Research, Vol.33, 2006, issue 4
Ioan Pop, Mahesh Kumari, D. Cimpean
HEAT AND MASS TRANSFER IN TRANSIENT FLOW BY MIXED CONVECTION BOUNDARY LAYER OVER A STRETCHING SHEET EMBEDDED IN A POROUS MEDIUM WITH CHEMICALLY REACTIVE SPECIES
Journal of Porous Media, Vol.13, 2010, issue 1
S.M.M. EL-Kabeir, Ahmed M. Rashad
Free convection boundary layer on an isothermal horizontal circular cylinder in a micropolar fluid
International Heat Transfer Conference 12, Vol.18, 2002, issue
Ioan Pop, Norsarahaida Saidina Amin, Roslinda Nazar