Results 231 to 240 of about 12,368 (258)
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Revue Générale de Thermique, 1997
Residence time measurements are introduced as a transient measurement technique for the fast and convenient determination of axial dispersion coefficients in plate heat exchangers. In front of the exchanger inlet a salt solution pulse is injected into the steady flow stream and propagates with dispersion to the exit of the exchanger.
Wilfried Roetzel, Frank Balzereit
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Residence time measurements are introduced as a transient measurement technique for the fast and convenient determination of axial dispersion coefficients in plate heat exchangers. In front of the exchanger inlet a salt solution pulse is injected into the steady flow stream and propagates with dispersion to the exit of the exchanger.
Wilfried Roetzel, Frank Balzereit
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Gas Holdup and Axial Dispersion Coefficient in Gas-Liquid Cocurrent Spout-Fluid Beds
Separation Science and Technology, 1996Abstract An experimental investigation was carried out to determine the effect of gas velocity, liquid velocity, and column diameter on the gas holdup and axial dispersion coefficients in cocurrent spout-fluid beds in three columns with diameters of 74, 114, and 144 mm, all with a height of 1.20 m, at superficial gas and liquid velocities of 0.001–0 ...
Mohammed Zohdi Anabtawi +2 more
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Industrial & Engineering Chemistry Research, 1997
Independent determinations of the coefficients of axial dispersion and of the mass-transfer kinetics have been found to be concentration dependent in protein chromatography. The consequences of this observation are studied on a theoretical basis. Numerical calculations of breakthrough curves were carried out, assuming a linear dependence of these ...
Guoming Zhong +2 more
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Independent determinations of the coefficients of axial dispersion and of the mass-transfer kinetics have been found to be concentration dependent in protein chromatography. The consequences of this observation are studied on a theoretical basis. Numerical calculations of breakthrough curves were carried out, assuming a linear dependence of these ...
Guoming Zhong +2 more
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Identification of axial dispersion coefficients by model method in gas/liquid/solid fluidised beds
Chemical Engineering and Processing: Process Intensification, 2001The axial dispersion coefficient, representative of the hydrodynamic behaviour of a fluidised bed, is determined by the model method. This method must be able to simulate the model. Therefore, a discretisation by orthogonal collocation is performed. Then, this determination is carried out in a fluidised bed, which tries to simulate an anaerobic biogas ...
B. Giojelli +4 more
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Principal Axes and Values of the Dispersion Coefficient in the 2D Axially Symmetric Porous Medium
2010We perform the diagonalization of the 2nd rank dispersion tensor D ij in the 2-dim anisotropic porous medium with two mirror lines, which are perpendicular to each other. We derive the eigenvalues of the matrix and calculate an angular measure of anisotropy.
Leonid G. Fel, Jacob Bear
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Axial dispersion coefficients in bubble columns
The Chemical Engineering Journal, 1976B.F. Alexander, Y.T. Shah
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Axial dispersion coefficient measurement in two‐phase flow
AIChE Journal, 1968A. Gomezplata, R. W. Brown
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Axial dispersion coefficients of the continuous phase in liquid-liquid spray towers
Industrial & Engineering Chemistry Fundamentals, 1982C. J. Geankoplis +3 more
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Axial dispersion of granular material in horizontal rotating cylinders
Powder Technology, 2010D M Scott, S A Scott
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