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Портал Begell Электронная Бибилиотека e-Книги Журналы Справочники и Сборники статей Коллекции
International Journal of Fluid Mechanics Research
ESCI SJR: 0.206 SNIP: 0.446 CiteScore™: 0.5

ISSN Печать: 2152-5102
ISSN Онлайн: 2152-5110

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International Journal of Fluid Mechanics Research

DOI: 10.1615/InterJFluidMechRes.v35.i4.70
pages 374-393

Effect of Polymer Additives on the Dynamics of a Fluid for Once Through System

Ch. V. Subbarao
Department of Chemical Engineering, MVGR College of Engineering
P. King
Environmental Pollution Control Engineering Laboratory, Department of Chemical Engineering, AU College of Engineering, Andhra University, Visakhapatnam, Andhra Pradesh
V. S. R. K. Prasad
Anil Neerukonda Institute of Technology & Sciences (ANITS)

Краткое описание

A mathematical equation for efflux time for slow draining of a Newtonian liquid from a large cylindrical tank through an exit pipe located at the bottom of tank when the flow in the pipe line is turbulent is developed based on macroscopic balances. The equation is fine tuned with the experimental data and an empirical equation for friction factor is developed. The efflux time equation so developed will be of use in arriving at the minimum time required for draining the tank. When the flow is partly laminar and partly turbulent, gravity driven and once through (as is the case in the above), the effect of addition of water soluble Polyacrylamide polymer on drag reduction is expressed in terms of % reduction in efflux time. Based on the efflux time, an empirical equation for friction factor is developed. The concentration of polymer which gives maximum drag reduction is also established.