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Chemical and Biochemical Engineering Faculty Research & Creative Works
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Full-Text Articles in Chemical Engineering
Transition Boiling Of Normal Pentane From A Horizontal Flat Gold Surface At One Atmosphere Pressure, R. M. Canon, Efton Park
Transition Boiling Of Normal Pentane From A Horizontal Flat Gold Surface At One Atmosphere Pressure, R. M. Canon, Efton Park
Chemical and Biochemical Engineering Faculty Research & Creative Works
No abstract provided.
Mass Transfer To Drops Moving Through Power Law Fluids In The Intermediate Reynolds Number Region, Robert M. Wellek, Türker Gürkan
Mass Transfer To Drops Moving Through Power Law Fluids In The Intermediate Reynolds Number Region, Robert M. Wellek, Türker Gürkan
Chemical and Biochemical Engineering Faculty Research & Creative Works
The mass transfer rate to fluid spheres is calculated for power law and Newtonian fluids by using the intermediate Reynolds number stream functions of Nakano and Tien (1970) and Yamaguchi et al. (1974), respectively. The Sh increases with increases in Re and Pe and decreases in n. Better results are obtained with Nakano and Tien's functions when Re > 10 and with Yamaguchi's functions when Re < 10. Copyright © 1976 American Institute of Chemical Engineers
An Examination Of The Adaptive Random Search Technique, M. W. Heuckroth, J. L. Gaddy, L. D. Gaines
An Examination Of The Adaptive Random Search Technique, M. W. Heuckroth, J. L. Gaddy, L. D. Gaines
Chemical and Biochemical Engineering Faculty Research & Creative Works
Random search procedures have recently been successfully applied to the optimization of a variety of chemical engineering problems, including optimization of chemical processes by flow sheet simulation. These procedures represent the independent variables as random variables described by probability distributions. The adaptive random search procedure centers the distribution for each variable about the best search point found and examines this region for a better point. Thus, this technique has the ability of continuously moving the search region toward the optimum, which is particularly advantageous in following constraints. This study examines the efficiency of the adaptive random search technique as applied …
Generalized Correlations For Molecular Weight And Concentration Dependence Of Zero-Shear Viscosity Of High Polymer Solutions., J. L. Zakin, R. Wu, H. Luh, Kenneth G. Mayhan
Generalized Correlations For Molecular Weight And Concentration Dependence Of Zero-Shear Viscosity Of High Polymer Solutions., J. L. Zakin, R. Wu, H. Luh, Kenneth G. Mayhan
Chemical and Biochemical Engineering Faculty Research & Creative Works
Results of a study are presented which show that two correlations of viscosity-concentration data are useful representations for data over wide ranges of mol. wt and up to at least moderately high concentrations for both good and fair solvents. Low mol. wt polymer solutions (below the critical entanglement mol. wt M//c) generally have higher viscosities than predicted by the correlations. One correlation is eta //s//p/c left bracket eta right bracket versus k prime left bracket eta right bracket c, where eta //s//p is specific viscosity, c is polymer concentration, left bracket eta right bracket is intrinsic viscosity, and k prime …
Process Optimization By Flow Sheet Simulation, L. D. Gaines, J. L. Gaddy
Process Optimization By Flow Sheet Simulation, L. D. Gaines, J. L. Gaddy
Chemical and Biochemical Engineering Faculty Research & Creative Works
Optimization of large or complex chemical processes often requires simplifying the system to reduce the mathematics to a form manageable by available algorithms or to reduce the time required to perform the computations. In many cases, such simplification alters the solution of the problem. Flow sheet simulation programs are ideally suited to the study of chemical processes, although the computational time is generally considered excessive for detailed optimization of complex systems by the usual procedures. This paper discusses the modifications needed to apply flow sheet simulation programs to the optimization of chemical processes. The advantages and disadvantages of the use …
Mass Transfer In Dispersed And Continous Phases For Creeping Flow Of Fluid Spheres Through Power Law Fluids, Türker Gürkan, Robert M. Wellek
Mass Transfer In Dispersed And Continous Phases For Creeping Flow Of Fluid Spheres Through Power Law Fluids, Türker Gürkan, Robert M. Wellek
Chemical and Biochemical Engineering Faculty Research & Creative Works
The diffusion equation was numerically solved by an implicit finite-difference method for the purpose of calculating the continuous phase Sherwood number, Sh, for mass transfer from an internally circulating Newtonian droplet traveling through a non-Newtonian power-law-type continuous phase in the creeping flow regime. The Mohan stream functions were used in the calculations in order to approximate the velocity profile inside and outside the droplet. The calculated Sh is presented as a function of the Peclet number, Pe, power-law index, n, and a viscosity ratio parameter, X. Sh increases as n decreases in the pseudoplastic region. The dependence of Sh on …