全部 标题 作者
关键词 摘要


On the Study of Magneto-Hydrodynamic Non-Newtonian Fluid Flow throughout Curvilinear Channel with Corrugated Walls

DOI: 10.4236/ojmsi.2014.24014, PP. 127-137

Keywords: Newtonian Fluid, Power-Law Non-Newtonian Fluid, Shear-Thickening, Shear-Thinning

Full-Text   Cite this paper   Add to My Lib

Abstract:

This article aims to numerically investigate the flow pattern for Newtonian and power law non-Newtonian fluid in a semi-half circular channel with corrugated walls under the influence of a magnetic field. The results indicate that, presence of a magnetic field affects the flow field in several aspects, especially in the vortex creation and dissipation. In addition, the analysis is carried out for different Reynolds numbers to ascertain the influence of magnetic field on each flow regime. Eventually, the analysis is carried out for a range of power indices including pseudo plastic (shear-thinning) to dilatants (shear-thickening) fluids. The results show that by increasing the power-index, the vortices begin to form and grow gradually so that in the shear-thickening fluid an extra vortex is formed and created nearby the corrugated part of the channel.

References

[1]  Metwally, H.E.M.H. (2002) A Computational Study of Enhanced Laminar Forced Convection Heat Transfer to Newtonian and Non-Newtonian Fluid Flows in Sinusoidal Corrugated-Plate Channels. Ph.D. Dissertation, University of Cincinnati, Cincinnati.
[2]  Phan-Thien, N. and Khan, M.M.K. (1987) Flow of an Oldroyd-Type Fluid through a Sinusoidally Corrugated Tube. Journal of Non-Newtonian Fluid Mechanics, 24, 203-220.
http://dx.doi.org/10.1016/0377-0257(87)85010-3
[3]  Yalamanchili, R.C. (1993) Flow of Non-Newtonian Fluids in Corrugated Channels. International Journal of Non- Linear Mechanics, 28, 535-548. http://dx.doi.org/10.1016/0020-7462(93)90046-N
[4]  Manglik, R.M. and Ding, J. (1997) Laminar Flow Heat Transfer to Viscous Power-Law Fluids in Double-Sine Ducts. International Journal of Heat and Mass Transfer, 40, 1379-1390.
http://dx.doi.org/10.1016/S0017-9310(96)00185-8
[5]  Zhang, J.H., Kundu, J. and Manglik, R.M. (2004) Effect of Fin Waviness and Spacing on the Lateral Vortex Structure and Laminar Heat Transfer in Wavy-Plate-Fin Cores. International Journal of Heat and Mass Transfer, 47, 1719-1730. http://dx.doi.org/10.1016/j.ijheatmasstransfer.2003.10.006
[6]  Fernandes, C.S., Dias, R.P., Nóbrega, J.M. and Maia, J.M. (2007) Laminar Flow in Chevron-Type Plate Heat Exchangers: CFD Analysis of Tortuosity, Shape Factor and Friction Factor. Chemical Engineering and Processing: Process Intensification, 46, 825-833. http://dx.doi.org/10.1016/j.cep.2007.05.011
[7]  Cramer, K.R. and Pai, S.I. (1973) Magnetofluid Dynamics for Engineers and Physicists. McGraw-Hill, New York.

Full-Text

comments powered by Disqus