scholarly journals Mathematical modelling of mass transfer rates between solid and liquid in high-temperature gas-stirred melts

1992 ◽  
Vol 16 (5) ◽  
pp. 255-262 ◽  
Author(s):  
Dipak Mazumdar ◽  
Tanuj Narayan ◽  
Paramjit Bansal
Keyword(s):  
Mass Transfer ◽  
High Temperature ◽  
Mathematical Modelling ◽  
Transfer Rates ◽  
High Temperature Gas

Conditions of Intensive Evaporation of Heterogeneous Water Droplet in High Temperature Gas Environment

2015 ◽  
Vol 32 (3) ◽  
pp. 349-355 ◽  
Author(s):  
O. V. Vysokomornaya ◽  
G. V. Kuznetsov ◽  
P. A. Strizhak
Keyword(s):  
Numerical Simulation ◽  
Mass Transfer ◽  
High Temperature ◽  
Water Droplet ◽  
Sufficient Conditions ◽  
Solid Inclusion ◽  
Necessary And Sufficient ◽  
Heating Up ◽  
System Water ◽  
High Temperature Gas

AbstractThe results of a numerical simulation of heat and mass transfer during evaporation of a water droplet with solid inclusion in air at temperature as high as 1000K are presented. Typical heating steps of droplet until it reaches the conditions of intensive evaporation (i.e.the interface “solid inclusion – liquid” reaches the boiling temperature) are described. The roles played by the external air temperature and by the main properties of inclusion are detailed. The droplet size, the relation between the sizes of inclusion and a liquid layer during the heating up is determined. The necessary and sufficient conditions of intensive evaporation in the system “water droplet with solid inclusion in high-temperature air” are pointed out.

scholarly journals Conjugate model for heat and mass transfer of porous wall in the high temperature gas flow

2001 ◽  
Vol 17 (3) ◽  
pp. 245-250 ◽  
Author(s):  
A. F. Polyakov ◽  
D. L. Reviznikov ◽  
Shen Qing ◽  
Tang Jinrong ◽  
Wei Shuru
Keyword(s):  
Mass Transfer ◽  
High Temperature ◽  
Heat And Mass Transfer ◽  
Gas Flow ◽  
Porous Wall ◽  
Conjugate Model ◽  
High Temperature Gas

An Environmental Wet Cell For High Voltage Electron Microscopy

1973 ◽  
Vol 31 ◽  
pp. 18-19
Author(s):  
N.J. Tighe ◽  
H.M. Flower ◽  
P.R. Swann
Keyword(s):  
Electron Microscopy ◽  
High Temperature ◽  
Image Quality ◽  
Inelastic Scattering ◽  
High Voltage ◽  
High Voltage Electron Microscopy ◽  
Voltage Electron ◽  
Environmental Cell ◽  
Water Saturated ◽  
High Temperature Gas

A differentially pumped environmental cell has been developed for use in the AEI EM7 million volt microscope. In the initial version the column of gas traversed by the beam was 5.5mm. This permited inclusion of a tilting hot stage in the cell for investigating high temperature gas-specimen reactions. In order to examine specimens in the wet state it was found that a pressure of approximately 400 torr of water saturated helium was needed around the specimen to prevent dehydration. Inelastic scattering by the water resulted in a sharp loss of image quality. Therefore a modified cell with an ‘airgap’ of only 1.5mm has been constructed. The shorter electron path through the gas permits examination of specimens at the necessary pressure of moist helium; the specimen can still be tilted about the side entry rod axis by ±7°C to obtain stereopairs.

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