scispace - formally typeset
Search or ask a question
Topic

Hartmann number

About: Hartmann number is a research topic. Over the lifetime, 2593 publications have been published within this topic receiving 61342 citations.


Papers
More filters
Journal ArticleDOI
TL;DR: In this paper, the effect of transverse magnetic field on the squeeze film behaviors between two parallel annular disks lubricated within an electrically conducting fluid is studied, and the modified Reynolds equation governing the squeeze-film pressure is derived by using the continuity equation and the magneto-hydrodynamic (MHD) motion equations.
Abstract: The effect of a transverse magnetic field on the squeeze film behaviors between two parallel annular disks lubricated within an electrically conducting fluid is studied. The modified Reynolds equation governing the squeeze film pressure is derived by using the continuity equation and the magneto‐hydrodynamic (MHD) motion equations. According to the results obtained, the influence of magnetic fields signifies an enhancement in the squeeze film pressure. On the whole, the magnetic field effect characterized by the Hartmann number provides an increase in value of the load‐carrying capacity and the response time as compared to the classical non‐conducting lubricant case. It improves the MHD squeeze film characteristics of the system.

33 citations

Journal ArticleDOI
TL;DR: In this article, the influence of viscous and Joule heating (Ohmic dissipation) in the magnetohydrodynamic squeezing flow, heat and mass transfer between two Riga plates was investigated.
Abstract: A Riga plate is an electromagnetic actuator which comprises permanent magnets and alternating electrodes placed on a plane surface. The present article investigates the influence of viscous and Joule heating (Ohmic dissipation) in the magnetohydrodynamic squeezing flow, heat and mass transfer between two Riga plates. A non-Fourier (Cattaneo–Christov) heat flux model is employed which generalizes the classical Fourier law to incorporate thermal relaxation time. Via suitable transformations, the governing partial differential conservation equations and boundary conditions are non-dimensionalized. The resulting nonlinear ordinary differential boundary value problem is well posed and is solved analytically by the variational parameter method (VPM). Validation of the solutions is included for the special case of non-dissipative flow. Extensive graphical illustrations are presented for the effects of squeeze parameter, magnetic field parameter, modified Hartmann number, radiative parameter, thermal Biot number, concentration Biot number, Eckert number, length parameter, Schmidt number and chemical reaction parameter on the velocity, temperature and concentration distributions. Additionally, the influence of selected parameters on reduced skin friction, Nusselt number and Sherwood number are tabulated. An error analysis is also included for the VPM solutions. Detailed interpretation of the results is provided. The study is relevant to smart lubrication systems in biomechanical engineering and sensor design.

33 citations

Journal ArticleDOI
TL;DR: An exact solution for the magnetohydrodynamics (MHD) flow of a conducting, incompressible Oldroyd-B fluid between two infinite, parallel, insulated disks rotating about non-coincident axes normal to the disks in the presence of a uniform transverse magnetic field was obtained in this article.

33 citations

Journal ArticleDOI
TL;DR: In this paper, the authors studied the viscous nanofluid flow over a non-isothermal wedge with thermal radiation and found that the Reynolds number and thermal radiation contribute significantly to entropy generation.

33 citations

Journal ArticleDOI
Goutam Saha1
TL;DR: In this paper, a numerical investigation of the steady magnetoconvection in a sinusoidal corrugated enclosure has been performed, where the penalty finite element method has been used to solve the governing Navier-Stokes and energy conservation equation of the fluid medium in the enclosure in order to investigate the effect of discrete heat source sizes on heat transfer for different values of Grashof number and Hartmann number.

33 citations


Network Information
Related Topics (5)
Heat transfer
181.7K papers, 2.9M citations
86% related
Reynolds number
68.4K papers, 1.6M citations
85% related
Turbulence
112.1K papers, 2.7M citations
80% related
Boundary layer
64.9K papers, 1.4M citations
80% related
Partial differential equation
70.8K papers, 1.6M citations
79% related
Performance
Metrics
No. of papers in the topic in previous years
YearPapers
2023122
2022234
2021236
2020219
2019231
2018176