Entransy dissipation analysis of interfacial convection enhancing gas–liquid mass transfer process based on field synergy principle

2019 ◽  
Vol 27 (8) ◽  
pp. 1777-1788 ◽  
Author(s):  
Dong Li ◽  
Aiwu Zeng
Keyword(s):  
Mass Transfer ◽  
Transfer Process ◽  
Mass Transfer Process ◽  
Field Synergy ◽  
Entransy Dissipation ◽  
Field Synergy Principle ◽  
Liquid Mass ◽  
Liquid Mass Transfer ◽  
Interfacial Convection

CFD modeling of gas–liquid mass transfer process in a rotating packed bed

2016 ◽  
Vol 294 ◽  
pp. 111-121 ◽  
Author(s):  
Yucheng Yang ◽  
Yang Xiang ◽  
Guangwen Chu ◽  
Haikui Zou ◽  
Baochang Sun ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Transfer Process ◽  
Mass Transfer Process ◽  
Packed Bed ◽  
Cfd Modeling ◽  
Liquid Mass ◽  
Rotating Packed Bed ◽  
Liquid Mass Transfer

scholarly journals Interactions between gas–liquid mass transfer and bubble behaviours

2019 ◽  
Vol 6 (5) ◽  
pp. 190136 ◽  
Author(s):  
Xin Li ◽  
Weiwen Wang ◽  
Pan Zhang ◽  
Jianlong Li ◽  
Guanghui Chen
Keyword(s):  
Mass Transfer ◽  
Bubble Diameter ◽  
Water System ◽  
Mass Transfer Process ◽  
Liquid Mass ◽  
Fluid Field ◽  
Vof Model ◽  
Liquid Mass Transfer ◽  
The Relationship ◽  
Two Sides

Interactions between gas–liquid mass transfer and bubble behaviours were investigated to improve the understanding of the relationship between the two sides. The CO 2 /N 2 -water system was applied to study the bubble behaviours based on the volume-of-fluid (VOF) model. The mass transfer conditions were taken into consideration when the fluid field was analysed. The bubble behaviours were compared with and without mass transfer. The results show that the absolute slopes of the curves for mass fraction inside the single rising bubbles, with diameters from 3 to 6 mm, decrease from 0.09325 to 0.02818. It means that small single bubbles have higher mass transfer efficiency. The daughter bubbles of cutting behaviour and initial side-by-side bubbles of coalescence behaviour also perform better than the initial large bubbles and coalesced bubbles, respectively. The bubble behaviours affect the mass transfer process. However, the latter also reacts upon the former. The critical intervals between the side-by-side bubbles decrease from 2.0 to 0.9 mm when the bubble diameter changes from 3 to 7 mm. For the coalescence behaviour without mass transfer, the critical intervals are larger because there is no influence of concentration around the bubbles on the bubble motion. The coalescence of cut daughter bubbles is also influenced by the concentration. It was suggested that the interaction between the gas–liquid mass transfer and bubble behaviours cannot be ignored.

scholarly journals Analysis of Nonlinear Dynamics for Abrupt Change of Interphase Structure in Liquid-Liquid Mass Transfer

2009 ◽  
Vol 2009 ◽  
pp. 1-13
Author(s):  
DongXiang Zhang ◽  
Min Sun ◽  
Jing Li
Keyword(s):  
Mass Transfer ◽  
Molecular Diffusion ◽  
Abrupt Change ◽  
Mass Transfer Rate ◽  
Mass Transfer Process ◽  
Liquid System ◽  
Phase Portraits ◽  
Liquid Mass ◽  
Liquid Mass Transfer ◽  
Parameter Ranges

As a liquid-liquid system is far from equilibrium state, the phase thickness is variable when mass transfer process with chemical reaction occurs in interphase zone, and a dispersible transitional layer called the interphase dispersed zone (IDZ) is formed. The IZD model composed of thermodynamically instable O/W or W/O microemulsion has reasonably explained enormous experimental phenomena in nonlinear mass transfer. To forecast the possible parameter ranges of IDZ process and abrupt change of liquid-liquid mass transfer rate, the dynamic characteristics of a molecular diffusion model are considered in this paper. We applied the bifurcation theory of planar dynamical system, Laplace transform, and maple software to investigate the model, and obtain different phase portraits of the system in different regions. The results obtained will play an important directive role in the study of IDZ model.

Simulation of volumetric heating of a moist medium with allowance for fluid mobility

2012 ◽  
Vol 9 (1) ◽  
pp. 91-93
Author(s):  
U.R. Ilyasov ◽  
A.V. Dolgushev
Keyword(s):  
Mass Transfer ◽  
Porous Medium ◽  
Numerical Solution ◽  
Heat And Mass Transfer ◽  
Transfer Process ◽  
Thermal Action ◽  
Mass Transfer Process ◽  
Low Permeability ◽  
Volumetric Heating ◽  
Drying Regime

The problem of volumetric thermal action on a moist porous medium is considered. Numerical solution, the influence of fluid mobility on the dynamics of the heat and mass transfer process is analyzed. It is established that fluid mobility leads to a softer drying regime. It is shown that in low-permeability media, the fluid can be assumed to be stationary.

Sign in / Sign up

Export Citation Format

Share Document