Results 281 to 290 of about 1,497,791 (338)
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Axial and radial dispersion in fixed beds
Chemical Engineering Science, 1987Several different methods of describing dispersion in fixed beds are defined and compared with experiment by means of a number of criteria for model validity. The principal criteria are statistical adequacy of the model when compared with experiments, consistency of bed-independent parameters when estimated from bed response, and consistency of ...
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Axial dispersion in coiled tubular reactors
Analytica Chimica Acta, 1986Abstract A theoretical and experimental treatment of axial dispersion in coiled tubes is presented. The dispersion, δ, is related to the theoretical plate height divided by four times the radius of the tube (H/4r). This parameter, when plotted against the product of the Reynolds number and the Schmidt number (ReSc), accurately predicts maxima in ...
Denys F. Leclerc +2 more
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Axial dispersion in plate-pulsed columns
Bioprocess Engineering, 1987The residence time distribution (RTD) of the phase under continuous flow and dispersed flow was measured in a plate-pulsed column under countercurrent liquid-liquid flow, and modelled using (i) the axial dispersion model and (ii) the noninteger ideal stage cascade model. The axial mixing in the continuous phase was found to be significantly higher than
G. Srinikethan +2 more
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Strömungsungleichverteilung und axiale Dispersion in Festbetten
Chemie Ingenieur Technik, 1989Modelisation de l'ecoulement fluide solide dans un lit de particule. L'etude se fait aux echelles micro, meso et macroscopique a partir des donnees experimentales obtenues a l'aide d'un ...
Evangelos Tsotsas +1 more
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Axial Dispersion in an Apparatus with Mobile Packing
Collection of Czechoslovak Chemical Communications, 1993The paper deals with modelling of the flow of liquid on a plate with mobile packing. The results of measurements have been interpreted by means of a simple dispersion model whose two parameters were determined from the nonideal step-input of a tracer and its response.
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Axial dispersion through tube constrictions
AIChE Journal, 1980AbstractTracer gas dispersion was measured for laminar flow through three different tube constrictions, at orifice Reynolds numbers between 10 and 5000 and Schmidt numbers of 0.213 and 0.769. Each constriction generates a confined jet which significantly enhances axial dispersion at intermediate Reynolds numbers ranging from 100 to 1000.
David W. Weaver, James S. Ultman
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AXIAL DISPERSION IN THE ANNULAR BED REACTOR
Chemical Engineering Communications, 1984The objective of the present work was to study the effects of axial dispersion on the behavior of the annular bed reactor using the methanation of carbon monoxide as the test reaction.
MARK E. DAVIS, JOHN YAMANIS
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Axial dispersion in a rectangular bubble column
The Canadian Journal of Chemical Engineering, 1977AbstractThis paper presents the results of an experimental study on the gas holdup and the liquid phase axial dispersion coefficient in a narrow packed and unpacked rectangular bubble column. In both cases the gas and liquid flow rates were varied and the data were obtained by employing standard tracer technique. The gas holdup and the axial dispersion
G. J. Stiegel, Y. T. Shah
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A numerical analysis of axial dispersion in electrolyzers
Electrochimica Acta, 1987Abstract An efficient approximate numerical method based on the principle of orthogonal collocation is presented for the computation of steady-state and transient active-ion concentration profiles in electrolyzers with axial dispersion.
R.W. Yeo, T.Z. Fahidy
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