When solid materials and devices scale down in size, heat transfer from the active region to the gas environment becomes increasingly significant. We show that the heat transfer coefficient across the solid-gas interface behaves very differently when the size of the solid is reduced to the nanoscale, such as that of a single nanowire. Unlike for macroscopic solids, the coefficient is strongly p...

Two-phase continuum models have been used to describe the multiphase flow properties of solid-gas and solid-liquid mixtures. The approach is limited in that it requires many fitting functions and parameters to be determined empirically, and it does not provide natural explanations for some of the qualitative behavior of solid-fluid flow. In this report, we explore a more recent single-phase con...

Fluidized beds are suspensions of grains by ascending fluids in tubes, and commonly used industry given their high rates mass heat transfers between the solids fluid. Although usually employed large scales (tube diameter order meter), fluidized have a great potential much smaller (order millimeter) for processes involving powder fluids. Of particular interest is pharmaceutical industry, which c...

In this study, we first suggest a simple approach to characterize configuration of gas-aqueous liquid two-phase flow based on discrete solid-liquid contact electrification, which is a newly defined concept as a sequential process of solid-liquid contact and successive detachment of the contact liquid from the solid surface. This approach exhibits several advantages such as simple operation, pre...

The application of Gas-Liquid-solid circulating fluidized beds (GLSCBE) has increased recently in chemical, petrochemical and biochemical industries. Electrical Resistance Tomography (ERT) and optical fibre probe were applied to investigate local phase holdups distribution. Since ERT is applicable only to conductive phase(s), e.g. liquid phase in this study, optical fibre probe was employed sim...

This paper considers the problem associated with numerical simulation of interaction between cocurrent stream occurring near a monoblock moving in gas medium and solid fuel combustion products flowing from rocket engine (SFRE). The peculiarity approach used is description gas-dynamic processes inside chamber, nozzle block, down jet based on single calculation methodology. In formulated methodol...

Experimental methods allow the shape 1, 2 and chemical composition 3 of solid surfaces to be controlled at a mesoscopic level. Exposing such structured substrates to a gas close to coexistence with its liquid can produce quite distinct adsorption characteristics compared to that occuring for planar systems 4 , which may well play an important role in developing technologies such as super-repell...