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Wyszukujesz frazę "model Darcy'ego" wg kryterium: Temat


Wyświetlanie 1-3 z 3
Tytuł:
Linear stability effect of densely distributed porous medium and Coriolis force on Soret driven ferrothermohaline convection
Autorzy:
Sekar, R.
Murugan, D.
Powiązania:
https://bibliotekanauki.pl/articles/264456.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
siła Coriolisa
model Darcy'ego
efekt Soreta
ferrofluid
Coriolis force
Darcy model
Soret effect
thermohaline convection
Opis:
The effect of Coriolis force on the Soret driven ferrothermohaline convection in a densely packed porous medium has been studied. A linear stability analysis is carried out using normal mode technique. It is found that stationary convection is favorable for the Darcy model, therefore oscillatory instability is studied. A small thermal perturbation is applied to the basic state and linear stability analysis is used for which the normal mode technique is applied. It is found that the presence of a porous medium favours the onset of convection. The porous medium is assumed to be variable and the effect of the permeable parameter is to destabilize the system. The present work has been carried out both for oscillatory as well as stationary instabilities. The results are depicted graphically.
Źródło:
International Journal of Applied Mechanics and Engineering; 2018, 23, 4; 911-928
1734-4492
2353-9003
Pojawia się w:
International Journal of Applied Mechanics and Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The onset of Soret driven ferrothermoconvective instability in the presence of darcy porous medium with anisotropy effect and MFD viscosity
Autorzy:
Murugan, D.
Sekar, R.
Powiązania:
https://bibliotekanauki.pl/articles/1839900.pdf
Data publikacji:
2021
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
anizotropia
lepkość
porowatość
model Darcy'ego
anisotropy effect
Darcy model
MFD viscosity
porous medium
Soret coefficient
Opis:
The effect of magnetic dependent (MFD) viscosity on Soret driven ferrothermohaline convection in a densely packed anisotropic porous medium has been studied. The Soret effect is focused on the system. A linear stability analysis is carried out using a normal mode technique and a perturbation method is applied. It is found that a stationary mode is favorable for the Darcy model. Vertical anisotropy tends to destabilize the system and the magnetization effect is found to stabilize the system. It is also found that the MFD viscosity delays the onset of convection. Numerical computations are made and illustrated graphically.
Źródło:
International Journal of Applied Mechanics and Engineering; 2021, 26, 1; 156-177
1734-4492
2353-9003
Pojawia się w:
International Journal of Applied Mechanics and Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Slow flow past a weakly permeable spheroidal particle in a hypothetical cell
Autorzy:
Bucha, Tina
Madasu, Krishna Prasad
Powiązania:
https://bibliotekanauki.pl/articles/1845038.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
permeable spheroid
cell model
Stokes law
Darcy’s law
BJSJ condition
sferoida przepuszczalna
model komórki
prawo Stokesa
prawo Darcy'ego
warunek BJSJ
Opis:
The perspective of the current analysis is to represent the incompressible viscous flow past a low permeable spheroid contained in a fictitious spheroidal cell. Stokes approximation and Darcy’s equation are adopted to govern the flow in the fluid and permeable zone, respectively. Happel’s and Kuwabara’s cell models are employed as the boundary conditions at the cell surface. At the fluid porous interface, we suppose the conditions of conservation of mass, balancing of pressure component at the permeable area with the normal stresses in the liquid area, and the slip condition, known as Beavers-Joseph-Saffman-Jones condition to be well suitable. A closed-form analytical expression for hydrodynamic drag on the bounded spheroidal particle is determined and therefore, mobility of the particle is also calculated, for both the case of a prolate as well as an oblate spheroid. Several graphs and tables are plotted to observe the dependence of normalized mobility on pertinent parameters including permeability, deformation, the volume fraction of the particle, slip parameter, and the aspect ratio. Significant results that influence the impact of the above parameters in the problem have been pointed out. Our work is validated by referring to previous results available in literature as reduction cases.
Źródło:
Archive of Mechanical Engineering; 2021, LXVIII, 2; 119-146
0004-0738
Pojawia się w:
Archive of Mechanical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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