Numerical Investigation of Transcritical-T Heat-and-Mass-Transfer Dynamics in Compressible Turbulent Channel Flow

2017 ◽  
Author(s):  
Kukjin Kim ◽  
Jean-Pierre Hickey ◽  
Carlo Scalo
Keyword(s):  
Mass Transfer ◽  
Numerical Investigation ◽  
Heat And Mass Transfer ◽  
Channel Flow ◽  
Turbulent Channel Flow

scholarly journals Numerical investigation of a single intermediate-sized bubble in horizontal turbulent channel flow

2020 ◽  
Vol 15 (3) ◽  
pp. JFST0020-JFST0020
Author(s):  
Sangwon KIM ◽  
Nobuyuki OSHIMA ◽  
Yuichi MURAI ◽  
Hyun Jin PARK
Keyword(s):  
Numerical Investigation ◽  
Channel Flow ◽  
Turbulent Channel Flow

Water droplet condensation and evaporation in turbulent channel flow

2014 ◽  
Vol 749 ◽  
pp. 666-700 ◽  
Author(s):  
E. Russo ◽  
J. G. M. Kuerten ◽  
C. W. M. van der Geld ◽  
B. J. Geurts
Keyword(s):  
Mass Transfer ◽  
Nusselt Number ◽  
Size Distribution ◽  
Water Vapour ◽  
Channel Flow ◽  
Droplet Size ◽  
Droplet Size Distribution ◽  
Turbulent Channel Flow ◽  
Phase Changes ◽  
Cold Wall

AbstractWe propose a point-particle model for two-way coupling of water droplets dispersed in the turbulent flow of a carrier gas consisting of air and water vapour. We adopt an Euler–Lagrangian formulation based on conservation laws for the mass, momentum and energy of the continuous phase and on empirical correlations describing momentum, heat and mass transfer between the droplet phase and the carrier gas phase. An incompressible flow formulation is applied for direct numerical simulation of differentially heated turbulent channel flow. The two-way coupling is investigated in terms of its effects on mass and heat transfer characteristics and the resulting droplet size distribution. Compared to simulations without droplets or those with solid particles with the same size and specific heat as the water droplets, a significant increase in Nusselt number is found, arising from the additional phase changes. The Nusselt number increases with increasing ambient temperature and is almost independent of the heat flux applied to the walls of the channel. The time-averaged droplet size distribution displays a characteristic dependence on position expressing the combined effect of turbophoresis and phase changes in turbulent wall-bounded flow. In the statistically steady state that is reached after a long time, the resulting flow exhibits a mean motion of water vapour from the warm wall to the cold wall, where it condenses on average, followed by a net mean mass transfer of droplets from the cold wall to the warm wall.

Numerical investigation of heat and mass transfer in a metal hydride bed

2004 ◽  
Vol 150 (1) ◽  
pp. 169-180 ◽  
Author(s):  
Abdulkadir Dogan ◽  
Yuksel Kaplan ◽  
T.Nejat Veziroglu
Keyword(s):  
Mass Transfer ◽  
Numerical Investigation ◽  
Heat And Mass Transfer ◽  
Metal Hydride

scholarly journals Numerical investigation of droplet-droplet collisions in a water and milk spray with coupled heat and mass transfer

2019 ◽  
Vol 38 (12) ◽  
pp. 1597-1619 ◽  
Author(s):  
Giulia Finotello ◽  
Johan T. Padding ◽  
Kay A. Buist ◽  
Annelien Schijve ◽  
Alfred Jongsma ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Numerical Investigation ◽  
Heat And Mass Transfer ◽  
Droplet Collisions
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