Numerical Simulation of the Mass Transfer for Rare-Earth Concentrate in Leaching Process

2015 ◽  
pp. 135-144
Author(s):  
Tingyao Liu ◽  
Yong Sheng ◽  
Teng Yang ◽  
Bao Wang ◽  
Lihui Han ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Mass Transfer ◽  
Rare Earth ◽  
Leaching Process

Numerical Simulation of the Mass Transfer for Rare-Earth Concentrate in Leaching Process

2015 ◽  
pp. 135-144
Author(s):  
Tingyao Liu ◽  
Yong Sheng ◽  
Teng Yang ◽  
Bao Wang ◽  
Lihui Han ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Mass Transfer ◽  
Rare Earth ◽  
Leaching Process

NUMERICAL SIMULATION OF HEAT AND MASS TRANSFER IN A 2D LID-DRIVEN CAVITY

2016 ◽  
Author(s):  
Leonardo Carvalho de Jesus ◽  
Julio Tomás Aquije Chacaltana
Keyword(s):  
Numerical Simulation ◽  
Mass Transfer ◽  
Heat And Mass Transfer ◽  
Driven Cavity

Modeling of mass transfer in biofilms in oscillatory flow conditions using k-ɛ turbulence model

2003 ◽  
Vol 3 (1-2) ◽  
pp. 201-207
Author(s):  
H. Nagaoka ◽  
T. Nakano ◽  
D. Akimoto
Keyword(s):  
Numerical Simulation ◽  
Mass Transfer ◽  
Turbulence Model ◽  
Uptake Rate ◽  
Oscillatory Flow ◽  
Substrate Uptake ◽  
Flow Conditions ◽  
Mass Transfer Mechanism ◽  
Substrate Uptake Rate ◽  
Good Agreement

The objective of this research is to investigate mass transfer mechanism in biofilms under oscillatory flow conditions. Numerical simulation of turbulence near a biofilm was conducted using the low Reynold’s number k-ɛ turbulence model. Substrate transfer in biofilms under oscillatory flow conditions was assumed to be carried out by turbulent diffusion caused by fluid movement and substrate concentration profile in biofilm was calculated. An experiment was carried out to measure velocity profile near a biofilm under oscillatory flow conditions and the influence of the turbulence on substrate uptake rate by the biofilm was also measured. Measured turbulence was in good agreement with the calculated one and the influence of the turbulence on the substrate uptake rate was well explained by the simulation.

Numerical simulation of heat and mass transfer during sublimation drying of porcine aorta

2021 ◽  
pp. 1-14
Author(s):  
Chao Gui ◽  
Leren Tao ◽  
Weifang Yang ◽  
Yaqi Zhang ◽  
Shanshan Chen ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Mass Transfer ◽  
Heat And Mass Transfer

Effect of potassium chloride on leaching process of residual ammonium from weathered crust elution-deposited rare earth ore tailings

2021 ◽  
Vol 163 ◽  
pp. 106800
Author(s):  
Jian Feng ◽  
Junxia Yu ◽  
Shuxin Huang ◽  
Xiaoyan Wu ◽  
Fang Zhou ◽  
...  
Keyword(s):  
Rare Earth ◽  
Potassium Chloride ◽  
Leaching Process ◽  
Weathered Crust

scholarly journals A high accurate scheme for numerical simulation of two-dimensional mass transfer processes in food engineering

2021 ◽  
Vol 60 (2) ◽  
pp. 2629-2639
Author(s):  
Yin Yang ◽  
Grzegorz Rządkowski ◽  
Atena Pasban ◽  
Emran Tohidi ◽  
Stanford Shateyi
Keyword(s):  
Numerical Simulation ◽  
Mass Transfer ◽  
Two Dimensional ◽  
Food Engineering ◽  
Transfer Processes ◽  
Mass Transfer Processes ◽  
Accurate Scheme

Numerical simulation and experimental investigation of multiphase mass transfer process for industrial applications in China

2019 ◽  
Vol 36 (1) ◽  
pp. 187-214
Author(s):  
Chao Yang ◽  
Guangsheng Luo ◽  
Xigang Yuan ◽  
Jie Chen ◽  
Yangcheng Lu ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Mass Transfer ◽  
Transfer Process ◽  
Transport Phenomena ◽  
Measurement Techniques ◽  
Mass Transfer Process ◽  
Industrial Applications ◽  
Economic Benefits ◽  
Distillation Columns ◽  
Stirred Reactors

Abstract This paper presents a comprehensive review of the remarkable achievements by Chinese scientists and engineers who have contributed to the multiscale process design, with emphasis on the transport mechanisms in stirred reactors, extractors, and rectification columns. After a brief review of the classical theory of transport phenomena, this paper summarizes the domestic developments regarding the relevant experiments and numerical techniques for the interphase mass transfer on the drop/bubble scale and the micromixing in the single-phase or multiphase stirred tanks in China. To improve the design and scale-up of liquid-liquid extraction columns, new measurement techniques with the combination of both particle image velocimetry and computational fluid dynamics have been developed and advanced modeling methods have been used to determine the axial mixing and mass transfer performance in extraction columns. Detailed investigations on the mass transfer process in distillation columns are also summarized. The numerical and experimental approaches modeling transport phenomena at the vicinity of the vapor-liquid interface, the point efficiency for trays/packings regarding the mixing behavior of fluids, and the computational mass transfer approach for the simulation of distillation columns are thoroughly analyzed. Recent industrial applications of mathematical models, numerical simulation, and experimental methods for the design and analysis of multiphase stirred reactors/crystallizers, extractors, and distillation columns are seen to garnish economic benefits. The current problems and future prospects are pinpointed at last.

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