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Osobennosti raboty centrobeznyh nasosv pri vnutripromyslovoj transportirovke nefti

Bagmanov A., Abziparov R.

Zeszyty Naukowe Politechniki Świętokrzyskiej. Nauki Techniczne

2008

Z. 10, Vol. 2

303-310

The centrifugal pumps, used for the intra-trade oil transportation are works on the gas saturated oil-water emulsions. The construction of pumps influences physical-chemistry and rheological properties of the transported emulsion, in flow area structural changes occur, dispersiveness and viscosity rise. The properties of emulsion, in turn influence pump specification, is reduced efficiency, increase the required power. New method of the analysis of pump specifications is proposed, solutions by increase of effectiveness in the work of pumps on emulsion given.

Transient free convection MHD flow through a porous medium between two vertical plates

Kalita B., Borkakati A. K.

International Journal of Applied Mechanics and Engineering

2005

Vol. 10, no 1

87-94

An analysis is presented to investigate the flow and heat transfer characteristic of a viscous incompressible and electrically conducting fluid through a porous medium bounded by two long vertical parallel plates in the presence of a uniform magnetic field applied transversely to the flow. The governing momentum and energy equations are solved by the Laplace transform technique and the solutions are presented for velocity and temperature distributions and shear stress. The effects of the four parameters, namely, the Darcy number, viscosity ratio parameter, magnetic Hartmann number, and Prandtl number on temperature and velocity distributions are shown in graphs and presented through the results and discussion. Also, the effects of these four parameters on skin friction are given.