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Numerical Simulation and Holographic Visualization of Double Diffusive Convection in a Horizontal Concentric Annulus

Dosch, J. and Beer, Hans (1992):
Numerical Simulation and Holographic Visualization of Double Diffusive Convection in a Horizontal Concentric Annulus.
In: International Journal of Heat and Mass Transfer, 35 (7), pp. 1811-1821. ISSN 00179310,
[Article]

Abstract

The time-dependent double diffusive convection in a horizontal concentric annulus is investigated both by numerical analysis and by holographic interferometry. In order to calculate stream functions, temperature-, concentration- and density-fields, the finite difference technique is utilized. Inner and outer cylinders of the annulus are kept isotherm, with the inner cylinder heated. The annulus is filled with an H2O-NaCl solution, which is isothermal initially and submitted to a linear and stable stratification of the solution. The results reveal a considerable decrease in heat transfer as compared to natural convection without a stabilizing salt gradient. In addition experiments are performed on double diffusive convection about a vertical cylinder in a square container.

Item Type: Article
Erschienen: 1992
Creators: Dosch, J. and Beer, Hans
Title: Numerical Simulation and Holographic Visualization of Double Diffusive Convection in a Horizontal Concentric Annulus
Language: English
Abstract:

The time-dependent double diffusive convection in a horizontal concentric annulus is investigated both by numerical analysis and by holographic interferometry. In order to calculate stream functions, temperature-, concentration- and density-fields, the finite difference technique is utilized. Inner and outer cylinders of the annulus are kept isotherm, with the inner cylinder heated. The annulus is filled with an H2O-NaCl solution, which is isothermal initially and submitted to a linear and stable stratification of the solution. The results reveal a considerable decrease in heat transfer as compared to natural convection without a stabilizing salt gradient. In addition experiments are performed on double diffusive convection about a vertical cylinder in a square container.

Journal or Publication Title: International Journal of Heat and Mass Transfer
Journal volume: 35
Number: 7
Divisions: 16 Department of Mechanical Engineering
16 Department of Mechanical Engineering > Institute for Technical Thermodynamics (TTD)
Date Deposited: 26 Feb 2015 16:26
Official URL: http://dx.doi.org/10.1016/0017-9310(92)90152-I
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