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פותח על ידי קלירמאש פתרונות בע"מ -
Linear stability of a double diffusive layer with variable fluid properties
Year:
1995
Authors :
טנאי, יוסף
;
.
Volume :
38
Co-Authors:
Tanny, J., Center for Technological Education Holon, P.O.B. 305, Holon, 58102, Israel
Gotlib, V.A., Center for Technological Education Holon, P.O.B. 305, Holon, 58102, Israel
Facilitators :
From page:
1683
To page:
1691
(
Total pages:
9
)
Abstract:
The linear stability of an infinite horizontal double diffusive layer stratified vertically by temperature and solute concentration is analyzed numerically for the case of temperature-dependent viscosity and salt diffusivity. The one-dimensional steady basic state associated with the variable properties is characterized by zero fluid velocity, a linear temperature profile and a non-linear salinity distribution. The horizontal boundaries are shear-free and perfectly conducting. The eigenvalue problem for the linearized perturbation equations is resolved numerically by the Galerkin method. The results for the direct mode ('finger regime') show that, in contrast to the constant properties case, the critical wavenumber increases with the solute Rayleigh number (Ras) and the critical thermal Rayleigh number is reduced from its corresponding constant properties value. The behavior of the oscillatory mode ('diffusive regime') is more complex, and two different branches exist for Ras larger than some fixed value. The least stable branch is characterized by a high wavenumber while the second branch by a small wavenumber. © 1995.
Note:
Related Files :
Diffusion Models
Eigenvalues and eigenfunctions
Heat convection
thermal stratification
Variable fluid properties
עוד תגיות
תוכן קשור
More details
DOI :
10.1016/0017-9310(94)00288-7
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
26346
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:22
Scientific Publication
Linear stability of a double diffusive layer with variable fluid properties
38
Tanny, J., Center for Technological Education Holon, P.O.B. 305, Holon, 58102, Israel
Gotlib, V.A., Center for Technological Education Holon, P.O.B. 305, Holon, 58102, Israel
Linear stability of a double diffusive layer with variable fluid properties
The linear stability of an infinite horizontal double diffusive layer stratified vertically by temperature and solute concentration is analyzed numerically for the case of temperature-dependent viscosity and salt diffusivity. The one-dimensional steady basic state associated with the variable properties is characterized by zero fluid velocity, a linear temperature profile and a non-linear salinity distribution. The horizontal boundaries are shear-free and perfectly conducting. The eigenvalue problem for the linearized perturbation equations is resolved numerically by the Galerkin method. The results for the direct mode ('finger regime') show that, in contrast to the constant properties case, the critical wavenumber increases with the solute Rayleigh number (Ras) and the critical thermal Rayleigh number is reduced from its corresponding constant properties value. The behavior of the oscillatory mode ('diffusive regime') is more complex, and two different branches exist for Ras larger than some fixed value. The least stable branch is characterized by a high wavenumber while the second branch by a small wavenumber. © 1995.
Scientific Publication
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