Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Experimental simulation of the salt gradient solar pond stability
In order to design and analyse natural or artificial system, where instable stratified layer occurs (such as solar pound and storage tanks), understanding of double diffusive behaviour is necessary. When an initially isothermal, salt stratified-system is heated uniformly from below, a convecting, growing layer is first formed whose sizes depend on the stabilizing salinity distribution. A quantitative description of such problem showed that a convective motion first produces layer at the bottom. This layer, separated by an oscillatory interface, continues to deepen with time until achieving a critical depth. The mechanisms responsible for the growth of the first mixed layer are poorly understood until now. A laboratory study is made to well understand the mechanism of transfer in an instable stratified system. A transparent cavity with free surface is filled with stratified-salt water and it is heated from below at constant temperature. The convective motion is visualized by (a) shadowgraph to obtain more information on density exchange through the interface and (b) particle image velocimetry to measure the time evolution of speed fields.
Experimental simulation of the salt gradient solar pond stability
In order to design and analyse natural or artificial system, where instable stratified layer occurs (such as solar pound and storage tanks), understanding of double diffusive behaviour is necessary. When an initially isothermal, salt stratified-system is heated uniformly from below, a convecting, growing layer is first formed whose sizes depend on the stabilizing salinity distribution. A quantitative description of such problem showed that a convective motion first produces layer at the bottom. This layer, separated by an oscillatory interface, continues to deepen with time until achieving a critical depth. The mechanisms responsible for the growth of the first mixed layer are poorly understood until now. A laboratory study is made to well understand the mechanism of transfer in an instable stratified system. A transparent cavity with free surface is filled with stratified-salt water and it is heated from below at constant temperature. The convective motion is visualized by (a) shadowgraph to obtain more information on density exchange through the interface and (b) particle image velocimetry to measure the time evolution of speed fields.
Experimental simulation of the salt gradient solar pond stability
Karim, Choubani (Autor:in) / Mohamed Jomaˆa, Safi (Autor:in)
Journal of Renewable and Sustainable Energy ; 4 ; 063143-
01.11.2012
11 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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