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פותח על ידי קלירמאש פתרונות בע"מ -
On a stable solute gradient heated from below with prescribed temperature
Year:
1991
Source of publication :
Journal of Fluid Mechanics
Authors :
טנאי, יוסף
;
.
Volume :
223
Co-Authors:
Kerpel, J., Department of Fluid Mechanics and Heat Transfer, Faculty of Engineering, Tel-Aviv University, Tel-Aviv, Israel
Tsinober, A., Department of Fluid Mechanics and Heat Transfer, Faculty of Engineering, Tel-Aviv University, Tel-Aviv, Israel
Tanny, J., Holon Center for Technological Education, P.O. Box 305, Holon, Israel
Facilitators :
From page:
83
To page:
91
(
Total pages:
9
)
Abstract:
The splitting of a smooth gradient into mixed layers separated by thin interfaces is studied in a constant stable solute gradient heated uniformly from below by raising the temperature at its bottom to a prescribed value above the ambient. The phenomenon under study is characterized by the development of a first mixed layer from the bottom up to a certain height; it is shown that its instantaneous thickness is proportional to the thermal expansion coefficient and the instantaneous temperature difference between the bottom heated plate and the undisturbed far fluid and is inversely proportional to the solute gradient. A second layer starts its formation during the growth of the first one and persists above the bottom layer notwithstanding the advancing interface below. Further layer formation occurs, depending on the prescribed Rayleigh number of the system (which is based on the vertical temperature difference and the initial solute gradient). The secondary layers grow with time and the final thickness of all the layers (except the bottom one) is almost equal. Their average final thickness is found to depend mostly on the solute gradient and the fluid properties. A final quasi-steady state is reached in which the depth of the whole convective region is proportional to the expansion coefficient and the vertical temperature difference and is inversely proportional to the initial solute gradient. © 1991, Cambridge University Press. All rights reserved.
Note:
Related Files :
Flow of Fluids--Mixing
Fluid Mechanics
Fluids--Solutions
Heat Transfer--Fluids
Mixed Layers
Solute Gradients
עוד תגיות
תוכן קשור
More details
DOI :
10.1017/S0022112091001349
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
26561
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:23
Scientific Publication
On a stable solute gradient heated from below with prescribed temperature
223
Kerpel, J., Department of Fluid Mechanics and Heat Transfer, Faculty of Engineering, Tel-Aviv University, Tel-Aviv, Israel
Tsinober, A., Department of Fluid Mechanics and Heat Transfer, Faculty of Engineering, Tel-Aviv University, Tel-Aviv, Israel
Tanny, J., Holon Center for Technological Education, P.O. Box 305, Holon, Israel
On a stable solute gradient heated from below with prescribed temperature
The splitting of a smooth gradient into mixed layers separated by thin interfaces is studied in a constant stable solute gradient heated uniformly from below by raising the temperature at its bottom to a prescribed value above the ambient. The phenomenon under study is characterized by the development of a first mixed layer from the bottom up to a certain height; it is shown that its instantaneous thickness is proportional to the thermal expansion coefficient and the instantaneous temperature difference between the bottom heated plate and the undisturbed far fluid and is inversely proportional to the solute gradient. A second layer starts its formation during the growth of the first one and persists above the bottom layer notwithstanding the advancing interface below. Further layer formation occurs, depending on the prescribed Rayleigh number of the system (which is based on the vertical temperature difference and the initial solute gradient). The secondary layers grow with time and the final thickness of all the layers (except the bottom one) is almost equal. Their average final thickness is found to depend mostly on the solute gradient and the fluid properties. A final quasi-steady state is reached in which the depth of the whole convective region is proportional to the expansion coefficient and the vertical temperature difference and is inversely proportional to the initial solute gradient. © 1991, Cambridge University Press. All rights reserved.
Scientific Publication
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