Topic
Hartmann number
About: Hartmann number is a research topic. Over the lifetime, 2593 publications have been published within this topic receiving 61342 citations.
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TL;DR: In this article, the coupled equations in velocity and magnetic field for unsteady magnetohydrodynamic (MHD) flow through a pipe of rectangular section are solved using combined finite volume method and spectral element technique, improved by means of Hermit interpolation.
76 citations
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TL;DR: In this article, the effects of magnetic field on convection in a trapezoidal enclosure were investigated using finite element method to solve the governing equations for different parameters such as Rayleigh number, Hartmann number and inclination angle of inclined wall of the enclosure.
75 citations
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TL;DR: In this paper, an experiment was described in which fully developed turbulent channel flow of mercury was investigated in the presence of a uniform transverse magnetic field and the channel test section was constructed from an electrical insulator and was rectangular in cross section.
Abstract: An experiment is described in which fully developed turbulent channel flow of mercury was investigated in the presence of a uniform transverse magnetic field. The channel test section was constructed from an electrical insulator and was rectangular in cross section. The flow was studied in the range of Reynolds numbers: 58 000–180 000, based on channel equivalent diameter. Hartmann number was varied between zero and values sufficiently high to change the flow from turbulent to laminar at the corresponding Reynolds number. Skin friction coefficients were deduced from static pressure measurements along the length of the channel. Velocity profiles were obtained from traversing probe total head measurements.
75 citations
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TL;DR: In this article, the second law analysis of thermodynamics is applied to viscoelastic magnetohydrodynamic flow over a stretching surface and the velocity and temperature profiles are obtained analytically using the Kummer's functions and used to compute the entropy generation number.
Abstract: This paper presents the application of the second law analysis of thermodynamics to viscoelastic magnetohydrodynamic flow over a stretching surface. The velocity and temperature profiles are obtained analytically using the Kummer's functions and used to compute the entropy generation number. The effects of the magnetic parameter, the Prandtl number, the heat source/heat sink parameter and the surface temperature parameter on velocity and temperature profiles are presented. The influences of the same parameters, the Hartmann number, the dimensionless group parameter and the Reynolds number on the entropy generation are also discussed.
75 citations
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TL;DR: In this article, the influence of external magnetic source on free convection of ferrofluid is reported and the obtaining systems have been solved through control volume based finite element method.
75 citations