An experimental study of melting of binary mixtures with double-diffusive convection in the liquid

1989 ◽  
Vol 2 (1) ◽  
pp. 17-26 ◽  
Author(s):  
C. Beckermann ◽  
R. Viskanta
Keyword(s):  
Experimental Study ◽  
Binary Mixtures ◽  
Double Diffusive Convection ◽  
Diffusive Convection ◽  
Double Diffusive

Experimental Study on Double-Diffusive Convection During Solidification of NH4Cl-H2O Hypereutectic Solution in Cylinder Cavity

2008 ◽  
Author(s):  
Bofeng Bai ◽  
Jun Lu ◽  
Lei Zhang ◽  
Heng Li
Keyword(s):  
Experimental Study ◽  
Cylindrical Cavity ◽  
Particle Image ◽  
Solidification Process ◽  
Double Diffusive Convection ◽  
Diffusive Convection ◽  
Image Velocimetry ◽  
Diffusive Interface ◽  
Contrary Direction ◽  
Double Diffusive

In order to reveal the law of double-diffusive convection of multi-compound solution in cylindrical cavity, experimental study on solidification of NH4Cl-H2O hypereutectic solution has been performed by using particle image velocimetry (PIV). The influencing factors of flow patterns and intensity are also analyzed. The results show that: 1) There are two approximately symmetric main convection cells in the liquid which are down along the sidewall and up along the center of the cylindrical cavity. Meanwhile, there are also two secondary cells on the bottom corner of cylindrical cavity, which flow in contrary direction to that of the main ones; 2) Due to the release of water during the solidification process, solute layers and diffusive interface are developed in the liquid and will be disappeared in the end; 3) The cooling temperature and the initial concentration have significantly effects on the flow velocity, solute layers and diffusive interface.

DOUBLE-DIFFUSIVE CONVECTION IN LIQUID FREON

1998 ◽  
Author(s):  
Pierre Dupont ◽  
O. Gorieu ◽  
Hassan Peerhossaini ◽  
M. Kestoras
Keyword(s):  
Double Diffusive Convection ◽  
Diffusive Convection ◽  
Double Diffusive
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