Effect of electric field on dispersion of a solute in an MHD flow through a vertical channel with and without chemical reaction

• Autorzy: Umavathi J. C. , Kumar J. P. , Gorla R. S. R. , Gireesha B. J.

Identyfikatory

DOI

10.1515/ijame-2016-0041

• Języki publikacji: EN

Abstrakty

EN

The longitudinal dispersion of a solute between two parallel plates filled with two immiscible electrically conducting fluids is analyzed using Taylor’s model. The fluids in both the regions are incompressible and the transport properties are assumed to be constant. The channel walls are assumed to be electrically insulating. Separate solutions are matched at the interface using suitable matching conditions. The flow is accompanied by an irreversible first-order chemical reaction. The effects of the viscosity ratio, pressure gradient and Hartman number on the effective Taylor dispersion coefficient and volumetric flow rate for an open and short circuit are drawn in the absence and in the presence of chemical reactions. As the Hartman number increases the effective Taylor diffusion coefficient decreases for both open and short circuits. When the magnetic field remains constant, the numerical results show that for homogeneous and heterogeneous reactions, the effective Taylor diffusion coefficient decreases with an increase in the reaction rate constant for both open and short circuits.

Słowa kluczowe

EN

Taylor dispersion; immiscible fluids; conducting fluid; MHD; chemical reaction

PL

dyspersja Taylora; magnetohydrodynamika; reakcja chemiczna

• Wydawca: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
• Czasopismo: International Journal of Applied Mechanics and Engineering
• Rocznik: 2016
• Tom: Vol. 21, no. 3
• Strony: 683--711
• Opis fizyczny: Bibliogr. 45 poz., tab., wykr.

Twórcy

autor

Umavathi J. C.

• Department of Mathematics, Gulbarga University Gulbarga, Karnataka, INDIA

autor

Kumar J. P.

• Department of Mathematics, Gulbarga University Gulbarga, Karnataka, INDIA

autor

Gorla R. S. R.

• Department of Mechanical Engineering Cleveland State University Cleveland-44115, OHIO, USA
• Department of Studies and Research in Mathematics Kuvempu University Shankaraghatta-577 451, Shimoga, Karnataka, INDIA

autor

Gireesha B. J.

• Department of Mechanical Engineering Cleveland State University Cleveland-44115, OHIO, USA
• Department of Studies and Research in Mathematics Kuvempu University Shankaraghatta-577 451, Shimoga, Karnataka, INDIA

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Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę