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Wyszukujesz frazę "Walters' fluid" wg kryterium: Temat


Wyświetlanie 1-7 z 7
Tytuł:
Triple-diffusive convection in Walters' (Model B') fluid with varying gravity field saturating a porous medium
Autorzy:
Kango, S. K.
Rana, G. C.
Chand, R.
Powiązania:
https://bibliotekanauki.pl/articles/178886.pdf
Data publikacji:
2013
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
lepkosprężyste ciecze Walters B
ciecz Waltersa
ośrodek porowaty
konwekcja
Walters' (model B') fluid
Walters' B liquid model
Walters' B' fluid
porous media
convection
Opis:
The Triple-Diffusive convection in Walters’ (Model B') fluid with varying gravity field is considered in the presence of uniform vertical magnetic field in porous medium. For the case of stationary convection, the magnetic field, varying gravity field and the stable solute gradients have stabilizing effects whereas the medium permeability has destabilizing (or stabilizing) effect on the system under certain conditions. A linear stability analysis theory and normal mode analysis method have been carried out to study the onset convection. The kinematic viscoelasticity has no effect on the stationary convection. The solute gradients, magnetic field, varying gravity field, porosity and kinematic viscoelasticity introduce oscillatory modes in the system, which were non-existent in their absence. The sufficient conditions for the non-existence of overstability are also obtained. The results are also shown graphically.
Źródło:
Studia Geotechnica et Mechanica; 2013, 35, 3; 45-56
0137-6365
2083-831X
Pojawia się w:
Studia Geotechnica et Mechanica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of rotation on the onset of electrohydrodynamic instability of an elastico-viscous dielectric fluid layer
Autorzy:
Rana, G. C.
Chand, R.
Sharma, V.
Powiązania:
https://bibliotekanauki.pl/articles/199843.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Walters' fluid
(model B’ fluid
rotation
AC electric field
electrohydrodynamics
viscosity
viscoelasticity
rotacja
pole elektryczne
elektrohydrodynamika
lepkość
lepkosprężystość
płyn Waltersa
elasto-lepki płyn Waltersa
Opis:
In this paper the combined effect of uniform rotation and AC electric field on the onset of instability in a horizontal layer of an elastico-viscous fluid stimulated by the dielectrophoretic force due to the variation of dielectric constant with temperature is studied. Walters’ (model B’) fluid model is used to describe rheological behaviour of an elastico-viscous fluid. The onset criterions for stationary and oscillatory convection are derived for the case of free-free boundaries. It is observed that Walters’ (model B’) fluid behaves like an ordinary Newtonian fluid and rotation has stabilizing influence whereas AC electric field has destabilizing influence on the stability of the system. The necessary condition for the occurrence of oscillatory convection is also obtained. The present results are in good agreement with the earlier published results.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2016, 64, 1; 143-149
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hydromagnetic thermal instability of compressible Walters' (Model B') rotating fluid permeated with suspended particles in porous medium
Autorzy:
Rana, G. C.
Jamwal, H. S.
Powiązania:
https://bibliotekanauki.pl/articles/178884.pdf
Data publikacji:
2013
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
lepkosprężyste ciecze Walters B
cząstki zawieszone
ośrodek porowaty
niestabilność termiczna
Walters B' viscoelastic fluid
suspended particles
porous medium
thermal instability
Opis:
In this paper, the thermal instability of compressible Walters’ (Model B′) rotating fluid permeated with suspended particles (fine dust) in porous medium in hydromagnetics is considered. By applying normal mode analysis method, the dispersion relation has been derived and solved analytically. It is observed that the rotation, magnetic field, suspended particles and viscoelasticity introduce oscillatory modes. For stationary convection, Walters’ (Model B′) elastico-viscous fluid behaves like an ordinary Newtonian fluid and it is observed that rotation has stabilizing effect, suspended particles are found to have destabilizing effect on the system, whereas the medium permeability has stabilizing or destabilizing effect on the system under certain conditions. The magnetic field has destabilizing effect in the absence of rotation, whereas in the presence of rotation, magnetic field has stabilizing or destabilizing effect under certain conditions.
Źródło:
Studia Geotechnica et Mechanica; 2013, 35, 4; 75-88
0137-6365
2083-831X
Pojawia się w:
Studia Geotechnica et Mechanica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rayleigh-Bénard convection in an elastico-viscous Walters’ (model B’) nanofluid layer
Autorzy:
Rana, G. C.
Chand, R.
Powiązania:
https://bibliotekanauki.pl/articles/202036.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
nanofluid
oscillatory convection
Rayleigh-Benard convection
viscoelasticity
Walters' (model B') fluid
oscylacyjna konwekcyjna
komórki Bénarda
lepkosprężystość
Opis:
In this study, the onset of convection in an elastico-viscous Walters’ (model B’) nanofluid horizontal layer heated from below is considered. The Walters’ (model B’) fluid model is employed to describe the rheological behavior of the nanofluid. By applying the linear stability theory and a normal mode analysis method, the dispersion relation has been derived. For the case of stationary convection, it is observed that the Walters’ (model B’) elastico-viscous nanofluid behaves like an ordinary Newtonian nanofluid. The effects of the various physical parameters of the system, namely, the concentration Rayleigh number, Prandtl number, capacity ratio, Lewis number and kinematics visco-elasticity coefficient on the stability of the system has been numerically investigated. In addition, sufficient conditions for the non-existence of oscillatory convection are also derived.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2015, 63, 1; 235-244
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hydrodynamic and hydromagnetic stability of two superposed elastico – viscous fluids of different permeability with dust in porous medium
Autorzy:
Singh, M.
Mehta, C. B.
Powiązania:
https://bibliotekanauki.pl/articles/266188.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
Rayleigh-Taylor instability
magnetic field
suspended particles
Walters' B fluid
different permeability and porous medium
pole magnetyczne
materiały porowate
lepkość płynu
Opis:
Rayleigh-Taylor instability of two superposed Walters’ B has elastico-viscous fluids in a uniform magnetic field through a porous medium with different permeability been studied to include the suspended (dust) particles effect. Using normal mode technique a dispersion relation has been derived. The stability analysis has been carried out. The magnetic field stabilizes the unstable configuration for the wave number band K > K* in chich the system is unstable in the absence of the magnetic field. It is also found that for a potential stable arrangement for Walters B’ elastico-viscous fluids of different permeabilities in the presence of suspended particles through a porous medium the system is stable, whereas in the potentially unstable case instability of the system occurs.
Źródło:
International Journal of Applied Mechanics and Engineering; 2015, 20, 2; 407-416
1734-4492
2353-9003
Pojawia się w:
International Journal of Applied Mechanics and Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thermosolutal instability in compressible viscoelastic dusty fluid through porous medium
Autorzy:
Kumar, P.
Mohan, H.
Powiązania:
https://bibliotekanauki.pl/articles/265807.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
płyn lepkosprężysty
cząstki zawieszone
materiały porowate
thermosolutal instability
compressible Walters B’ viscoelastic fluid
suspended particles
porous medium
Opis:
Thermosolutal instability in a compressible Walters B’ viscoelastic fluid with suspended particles through a porous medium is considered. Following the linearized stability theory and normal mode analysis, the dispersion relation is obtained. For stationary convection, the Walters B’ viscoelastic fluid behaves like a Newtonian fluid and it is found that suspended particles and medium permeability have a destabilizing effect whereas the stable solute gradient and compressibility have a stabilizing effect on the system. Graphs have been plotted by giving numerical values to the parameters to depict the stability characteristics. The stable solute gradient and viscoelasticity are found to introduce oscillatory modes in the system which are non-existent in their absence.
Źródło:
International Journal of Applied Mechanics and Engineering; 2013, 18, 1; 99-112
1734-4492
2353-9003
Pojawia się w:
International Journal of Applied Mechanics and Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Elastic deformation and inclined magnetic field on entropy generation forwalter’s liquid B fluid over a stretching sheet
Autorzy:
Ragavan, C.
Munirathinam, S.
Govindaraju, M.
Abdul-Hakeem, A. K.
Ganga, B.
Powiązania:
https://bibliotekanauki.pl/articles/122377.pdf
Data publikacji:
2019
Wydawca:
Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej
Tematy:
entropy
inclined magnetic field
elastic deformation
Walter’s liquid B fluid
entropia
odkształcenie sprężyste
pole magnetyczne
deformacja
Opis:
An analytical solution is presented for entropy generation on MHD Walter’s liquid B fluid over a stretching sheet with elastic deformation. The governing expressions of PDEs are converted into ODEs by suitable transformation which is solved by a hypergeometric function. Plots for velocity, heat transfer, entropy generation and a Bejan number are examined and their behavior is deliberated for several physical parameters. It is noticed that the entropy generation is minimized for an Eckert number and enhanced for an elastic deformation parameter. Moreover, these two parameters on the Bejan number profile have reverse effects.
Źródło:
Journal of Applied Mathematics and Computational Mechanics; 2019, 18, 2; 85-98
2299-9965
Pojawia się w:
Journal of Applied Mathematics and Computational Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-7 z 7

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