Results 241 to 250 of about 833,436 (305)
Axial diffusion effect on concentration dispersion
International Journal of Heat and Mass Transfer, 2015 Abstract This work presents an analytical attempt to illustrate the effect of axial diffusion on concentration dispersion in packed tube flows. The concentration moment method is applied to derive the analytical solution for time-dependent Taylor dispersion coefficient.
Zi Wu, G Q Chen
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A new numerical method for axial dispersion characterization in microreactors [PDF]
Chemical Engineering Science, 2017 Axial dispersion is a key phenomenon in reactor engineering that can affect yield and selectivity when reactions are carried out. Therefore its characterization is necessary for an adequate modelling of the reactor. The development of compact reactors to
Christophe Gourdon, Michel Cabassud
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Effect of microchannel aspect ratio on residence time distributions and the axial dispersion coefficient [PDF]
Chemical Engineering and Processing: Process Intensification, 2009 The effect of microchannel aspect ratio (channel depth/channel width) on residence time distributions and the axial dispersion coefficient have been investigated for Newtonian and shear thinning non-Newtonian flow using computational fluid dynamics.
Joelle Aubin, Laurent Prat, C Xuereb
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Axial dispersion in biofilters
Biochemical Engineering Journal, 1998Abstract Biological destruction of toluene vapor from air streams was studied in a laboratory scale biofilter. The packing material (peat) used in the reactor was immobilized with acclimatized bacterial suspension. The original microbial consortium was obtained as an activated sludge suspension from a local waste water treatment plant.
S.M. Zarook, A.A. Shaikh, S.M. Azam
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DEM investigation of the axial dispersion behavior of a binary mixture in the rotating drum
Powder Technology, 2018 The granular motion of binary-size mixture in a three-dimensional rotating drum operating in the rolling regime is numerically tracked via the discrete element method (DEM), with a focus on the axial dispersion behavior of the different particle types in
Kun Luo, Jia Wei Chew, Liangqi Zhang
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Axial and radial dispersion in rolling mode rotating drums
Powder Technology, 2005 Single particle trajectories, obtained using the Positron Emission Particle Tracking (PEPT) technique, have been used to characterise axial and radial dispersion of granular media in the rolling drum operated in batch and continuous mode.
Xianfeng Fan, D J Parker, J P K Seville
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Axial dispersion in packed beds
Chemical Engineering Science, 1975Abstract Behaviour of axial dispersion in packed beds is made clear from the properties of the equation of continuity. New dispersion data are added to relate liquid data with gas data in the Stokes flow regime. A special device to send a plane impulse of tracer liquor was developed.
Terukatsu Miyauchi, Tatsuji Kikuchi
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Axial dispersion in aeration tanks
Water Quality Research Journal, 1966Abstract The primary function of an aeration tank is to provide sufficient time, and a suitable environment for the assimilation of organics by micro-organisms. Initally assimilation occurs by a rapid absorption or adsorption process. After this initial contact-phenomena between the waste and micro-organisms, the biochemical reactions ...
Peter L. Timpany, Keith L. Murphy
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The correlation of axial dispersion data
The Canadian Journal of Chemical Engineering, 1970AbstractThe axial dispersion which occurs when a binary gas mixture flows through a bed of inert, non‐porous particles is well understood when the dispersion is dominated by either molecular diffusion or by turbulent mixing. In this paper consideration is given to the dispersion which occurs in the transition region between these two extremes of ...
M. F. Edwards, J. F. Richardson
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1992
Abstract The treatment in the previous chapter relates specifically to pure plug flow, which in practice occurs only in extractors such as discrete-stage mixer-settlers and perforated plate columns where phase separation is virtually complete between stages.
H R C Pratt, G W Stevens
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Abstract The treatment in the previous chapter relates specifically to pure plug flow, which in practice occurs only in extractors such as discrete-stage mixer-settlers and perforated plate columns where phase separation is virtually complete between stages.
H R C Pratt, G W Stevens
openaire +1 more source