ISSN:0001-1541    

DOI:10.1002/aic.690110302

出版商:American Institute of Chemical Engineers    

年代:1965

数据来源: WILEY

ISSN:0001-1541    

DOI:10.1002/aic.690110304

出版商:American Institute of Chemical Engineers    

年代:1965

数据来源: WILEY

摘要:

AbstractThe method for predicting the viscosity of binary nonpolar gaseous mixtures from pure component Lennard‐Jones force parameters and composition has been extended to multicomponent mixtures. The 136 mixtures examined contained from three to seven components from sixteen different gases in the temperature range from 5° to 1,014°C. The predicted gaseous viscosities should fall between −0.3 and −6.7° of the actual viscosities 95% of the time. With a slight modification of the constant in the viscosity expression, the viscosity can be predicted to within ±3.2% of the experimental viscosity 95% of the time for mixtures containing three or more c

ISSN:0001-1541    

DOI:10.1002/aic.690110305

出版商:American Institute of Chemical Engineers    

年代:1965

数据来源: WILEY

摘要:

AbstractThe mechanism whereby surface‐active agents cause stagnation in a fluid interface has been extensively studied for water flowing in a horizontal channel. Known surface‐active contaminants exhibiting varied surface behavior were added to the water. Distinctly different phenomena were observed with compressible and incompressible fi

ISSN:0001-1541    

DOI:10.1002/aic.690110306

出版商:American Institute of Chemical Engineers    

年代:1965

数据来源: WILEY

摘要:

AbstractExperimental measurements have been performed for pulsed perforated‐plate columns of different sizes and geometry to obtain longitudinal dispersion coefficients for continuous and dispersed phases and size and holdup of liquid droplets dispersed in the columns. These quantities are correlated with operating conditions and column design, including the data published by different authors. Longitudinal dispersion coefficients for the continuous phase are shown to follow the backflow model. A superficial number of stages in series in each compartment is shown to come from inherent instability of fluid motion in the compartment. The longitudinal dispersion coefficient of the dispersed phase approaches that of the continuous phase with increasing pulse velocity. Holdup and mean size of droplets are correlated mainly on the basis of the rate of energy dissipation in the column fluid. Inclusion of dispersed‐phase viscosity is shown to correlate the holdup data successfully for different liquid‐liquid sy

ISSN:0001-1541    

DOI:10.1002/aic.690110307

出版商:American Institute of Chemical Engineers    

年代:1965

数据来源: WILEY

摘要:

AbstractThis paper presents a study of flux, film thickness, and velocity profiles in the drainage and withdrawal processes of non‐Newtonian fluids on flat plates. The flow equations for the drainage from a vertical plate are solved for a three‐constant or Ellis model fluid. The solution is compared with that of the Newtonian fluid.The withdrawal case is solved for the power law fluid. The solution consists of matching of the equation of capillary statics in the liquid bath to the flow equation in the entrained film. Experimental data of coating of an endless belt with a film of a non‐Newtonian fluid are presented and discussed in view of the theory deve

ISSN:0001-1541    

DOI:10.1002/aic.690110308

出版商:American Institute of Chemical Engineers    

年代:1965

数据来源: WILEY

摘要:

AbstractExperimental coalescence time and time distribution studies of the coalescence of a single droplet at a plane interface are presented for four two‐component–two‐phase systems. The results have been analyzed by dimensional analysis and statistical analysis, and a correlation of coalescence time and coalescence time distribution with the physical properties of the system is pro

ISSN:0001-1541    

DOI:10.1002/aic.690110309

出版商:American Institute of Chemical Engineers    

年代:1965

数据来源: WILEY

摘要:

AbstractTheoretical models for the drainage of the liquid film between a droplet and the interface have been presented in which the thickness of the film is assumed to vary. The models have been used to derive expressions for the film drainage time and the pressure drop through the film. The experimental results presented in Part I of this paper, when inserted into the equations, show that the drainage film is thinnest at its periphery. These conclusions have been supported by high‐speed photography and have been used to explain the distribution of coalescence times reported by all investigators in this fiel

ISSN:0001-1541    

DOI:10.1002/aic.690110310

出版商:American Institute of Chemical Engineers    

年代:1965

数据来源: WILEY

摘要:

AbstractSimultaneous population and mass balances have been solved together with a generalized form of nucleation‐growth rate kinetics to obtain the form of crystal size distribution (CSD) for several idealized modes of crystallizer operation, including seed crystal removal, product classification, arbitrary solids concentration, and staged vessels. The effect of holding time and feed supersaturation on crystal size in a mixed suspension, mixed product removal (MSMPR) crystallizer was also studied. A representative CSD from an MSMPR crystallizer plus the relative kinetic order of nucleation to growth rate can be used to predict CSD from any of the above modes of operatio

ISSN:0001-1541    

DOI:10.1002/aic.690110311

出版商:American Institute of Chemical Engineers    

年代:1965

数据来源: WILEY

摘要:

AbstractThe technique of bounding, that is of constructing general solutions for all ranges of the variables and parameters from solutions for a few limiting and special cases, is outlined and illustrated for problems in conduction and convection. The technique of patching, that is of constructing approximate solutions for multiphase media by the combination of pseudo solutions for the different regions, is also outlined and illustrated for problems in conduction and freezing. The shortcomings and possible inaccuracies of these two techniques are indicated as well.

ISSN:0001-1541    

DOI:10.1002/aic.690110312

出版商:American Institute of Chemical Engineers    

年代:1965

数据来源: WILEY