Temat: viscosity model - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Influence of viscosity on the shape of an air Taylor bubble in a stagnant liquid under turbulent condition in falling film
Autorzy:: Lertnuwat, B.
Powiązania:: https://bibliotekanauki.pl/articles/265385.pdf
Data publikacji:: 2019
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:: lepkość
metoda Taylora
turbulencja
Dumitrescu model
viscosity
Taylor bubble
turbulence
Opis:: This work aims to find the influence of the liquid viscosity on the shape of an air Taylor bubble, rising up in a pipe column which contains the liquid under conditions that the liquid is stagnant and the Froude number is approximately equal to 0.35. Five liquid viscosities (from 0.001 to 0.01 Pa · s) were selected for being computationally investigated. An appropriate shape of a Taylor bubble, corresponding to each selected viscosity, was obtained by considering a pressure distribution of the air inside the bubble. Simulation results showed that the Taylor bubble shape would be thicker if the liquid viscosity was decreased. This could be explained by using the theory of the log-law velocity profile.
Źródło:: International Journal of Applied Mechanics and Engineering; 2019, 24, 1; 67-77
1734-4492
2353-9003
Pojawia się w:: International Journal of Applied Mechanics and Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

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

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Skocz do pozycji: 3.

Tytuł:: Effect of soret and temperature dependent viscosity on thermohaline convection in a ferrofluid saturating a porous medium
Autorzy:: Sekar, R.
Raju, K.
Powiązania:: https://bibliotekanauki.pl/articles/955159.pdf
Data publikacji:: 2014
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:: porowatość
ciecz wieloskładnikowa
wymiana ciepła i masy
ferroconvection
porous medium
Soret effect
multi-component system
Brinkman model
temperature dependent viscosity
Galerkin technique
Opis:: Soret driven ferrothermoconvective instability in multi-component fluids has a wide range of applications in heat and mass transfer. This paper deals with the theoretical investigation of the effect of temperature dependent viscosity on a Soret driven ferrothermohaline convection heated from below and salted from above subjected to a transverse uniform magnetic field in the presence of a porous medium. The Brinkman model is used in the study. It is found that the stationary mode of instability is preferred. For a horizontal fluid layer contained between two free boundaries an exact solution is examined using the normal mode technique for a linear stability analysis. The effect of salinity has been included in magnetization and density of the fluid. The critical thermal magnetic Rayleigh number for the onset of instability is obtained numerically for sufficiently large values of the buoyancy magnetization parameter M1 using the method of numerical Galerkin technique. It is found that magnetization and permeability of the porous medium destabilize the system. The effect of temperature dependent viscosity stabilizes the system on the onset of convection.
Źródło:: International Journal of Applied Mechanics and Engineering; 2014, 19, 2; 321-336
1734-4492
2353-9003
Pojawia się w:: International Journal of Applied Mechanics and Engineering
Dostawca treści:: Biblioteka Nauki

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