Unsteady Hartmann flow in a rotating channel with perfectly conducting walls

• Autorzy: Seth G. S. , Ansari Md. S. , Nandkeolyar R.
• Języki publikacji: EN

Abstrakty

EN

An unsteady Hartmann flow of a viscous incompressible electrically conducting fluid in a rotating channel with perfectly conducting walls under the action of a periodic pressure gradient is studied. An exact solution of the governing equations for the fully developed flow is obtained in a closed form. The expression for the shear stress at the upper plate is also derived. The solutions valid for vanishing and small finite magnetic Prandtl number are derived from the general solution. The asymptotic behavior of these solutions is analyzed, for large values of the frequency parameter […], to gain some physical insight into the flow pattern. It is found that a magnetic field tends to retard the fluid flow in both the primary and secondary flow directions whereas oscillations and rotation tend to accelerate it in both the directions. The magnetic field reduces primary and secondary induced magnetic fields whereas oscillations and rotation have reverse effect on it. The magnetic field reduces the primary as well as secondary shear stress at the upper plate […] whereas oscillations and rotation tend to increase it.

Słowa kluczowe

EN

Coriolis force; magnetic Prandtl number; Eckman number; magnetic interaction parameter; frequency parameter; hydromagnetic Stokes-Eckman layer region and magnetic diffusion region

PL

siła Coriolisa; liczba Prandtla; liczba Ekmana; parametry magnetyczne; parametr częstotliwości

• Wydawca: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
• Czasopismo: International Journal of Applied Mechanics and Engineering
• Rocznik: 2011
• Tom: Vol. 16, no 4
• Strony: 1129--1146
• Opis fizyczny: Bibliogr. 24 poz., tab., wykr.

Twórcy

autor

Seth G. S.

autor

Ansari Md. S.

autor

Nandkeolyar R.

• Department of Applied Mathematics Indian School of Mines, Dhanbad-826004, INDIA,

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