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Analysis of magneto-hydrodynamic squeeze film characteristics between curved annular plates

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The analysis of squeeze-film performances between curved annular plates with an electrically conducting fluid in the presence of a transverse magnetic field is presented in this study. The magneto-hydrodynamic (MHD) Reynolds-type equation for squeezing-film curved annular disks is derived using the continuity equation and the MHD motion equations. A closed-form solution for the squeezing film pressure is obtained, and applied to predict the MHD squeeze-film characteristics. According to the results obtained, the presence of applied magnetic fields signifies an increase in the MHD squeeze-film pressure. Compared with the classical non-conducting-lubricant case, the magnetic-field effect characterized by the Hartmann number provides an enhancement to the MHD load-carrying capacity and the response time, especially for larger values of the curved shape parameter or smaller values of inner-outer radius ratio of the curved annular disks.
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Keywords: Electrical Conductivity; Fluid Mechanics; Magnetic Fields

Document Type: Research Article

Publication date: May 1, 2004

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