Mesoscale transport phenomena and mechanisms

Mesoscale Transport Phenomena and Mechanisms in Gas-Liquid Reaction Systems... 

Mesoscale transport phenomena and mechanisms are essential to achieve a more fundamental understanding on the mass, momentum, and heat transfer in the classical... 

Despite these explorations and knowledge on mesoscales, mesoscale transport phenomena and mechanisms would continue to be a chaUenge for multiphase reaction systems. For example, there are currendy no general guidelines to identify the dominant mechanisms and formulate the stability... 

Ning Yang, Mesoscale Transport Phenomena and Mechanisms in Gas-Liquid Reaction Systems Harry E.A. Van den Akker, Mesoscale Flow Structures and Fluid—Particle Interactions... 

The use of local theories, incorporating parameters such as the eddy viscosity Km and eddy thermal conductivity Ke, has given reasonable descriptions of numerous important flow phenomena, notably large scale atmospheric circulations with small variations in topography and slowly varying surface temperatures. The main reason for this success is that the system dynamics are dominated primarily by inertial effects. In these circumstances it is not necessary that the model precisely describe the role of turbulent momentum and heat transport. By comparison, problems concerned with urban meso-meteorology will be much more sensitive to the assumed mode of the turbulent transport mechanism. The main features of interest for mesoscale calculations involve abrupt... 

The new mesoscale method for large systems takes account of chemical reaction, and transport should be estabHshed to examine the reaction mechanism quantitatively and the relationship with the changes of concentration of reactants and products. AFM study shows that the interfacial roughness of catalyst support has a significant impact for clusters on its chemical and physical adsorption stabdity this problem is in the nanometer and micrometer mesoscale traditional simulation also met the problem that studied system is too big to handle. A new medium-scale method is needed to be established to study effects of interfacial roughness on chemical and physical phenomena. 

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