Global stability for double-diffusive convection in a couple-stress fluid saturating a porous medium

• Autorzy: Choudhary Shalu , Sunil

Identyfikatory

DOI

10.2478/sgem-2018-0044

• Języki publikacji: EN

Abstrakty

EN

We show that the global non-linear stability threshold for convection in a double-diffusive couple-stress fluid saturating a porous medium is exactly the same as the linear instability boundary. The optimal result is important because it shows that linearized instability theory has captured completely the physics of the onset of convection. It is also found that couple-stress fluid saturating a porous medium is thermally more stable than the ordinary viscous fluid, and the effects of couple-stress parameter (F) , solute gradient (S _f) and Brinkman number (D_a) on the onset of convection is also analyzed.

Słowa kluczowe

EN

couple-stress parameter; solute gradient; Brinkman number

• Wydawca: De Gruyter
• Czasopismo: Studia Geotechnica et Mechanica
• Rocznik: 2019
• Tom: Vol. 41, nr 1
• Strony: 13--20
• Opis fizyczny: Bibliogr. 42 poz., rys.

Twórcy

autor

Choudhary Shalu

• Department of Mathematics, Uttaranchal University, Dehradun, Uttarakhand 248007, India

autor

Sunil

• Department of Mathematics, National Institute of Technology, Hamirpur, Himachal Pradesh 177005, India

Bibliografia

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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).