Unsteady hydromagnetic Couette flow due to ramped motion of one of the porous plates

• Autorzy: Jha B. K. , Jibril H. M.

Identyfikatory

DOI

10.2478/ijame-2013-0065

• Języki publikacji: EN

Abstrakty

EN

An unsteady flow formation in Couette motion of an electrically conducting fluid subject to transverse magnetic field has been analyzed in the presence of suction/injection through the porous plates when one of the porous plates is in ramped motion. It is assumed that the porous plates are uniformly permeable and the fluid is entering the flow region through one of the porous plates at same rate as it is leaving through the other porous plate. The resulting boundary value problem has been solved exactly under the assumption of a negligible induced magnetic field, external electric field and pressure gradient. Unified closed form expressions for the velocity field and skin-friction corresponding to the case of a magnetic field fixed relative to the fluid or to the moving porous plate have been presented. In order to highlight the impact of the ramp motion of the porous plate on the fluid flow, it has also been compared with Couette flow between porous plates when one of the porous plates has been set into an impulsive motion.

Słowa kluczowe

EN

Couette flow; transverse magnetic field; suction/injection; MHD; ramp motion; Hartmann number; porous plates

PL

przepływ Couette'a; pole magnetyczne poprzeczne; magnetohydrodynamika

• Wydawca: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
• Czasopismo: International Journal of Applied Mechanics and Engineering
• Rocznik: 2013
• Tom: Vol. 18, no. 4
• Strony: 1039--1056
• Opis fizyczny: Bibliogr. 16 poz., wykr.

Twórcy

autor

Jha B. K.

• Department of Mathematics, Faculty of Science Ahmadu Bello University, Zaria, NIGERIA

autor

Jibril H. M.

• Department of Mathematics, Faculty of Science Ahmadu Bello University, Zaria, NIGERIA

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