Accession Number:

AD0766919

Title:

The Effect of Holdup on Equilibrium Drop Sizes in an Agitated Tank,

Descriptive Note:

Corporate Author:

MASSACHUSETTS INST OF TECH CAMBRIDGE FLUID MECHANICS LAB

Report Date:

1973-07-01

Pagination or Media Count:

29.0

Abstract:

Equilibrium drop sizes are calculated for a dispersed liquid phase ie. oil in water in an agitated tank under conditions of non-negligible holdup. The unsteady pressure forces across a drop necessary to break it against the resistance of surface tension are estimated assuming a locally isotropic turbulent field. A coalescence frequency based on binary drop collisions is equated to the breakup frequency to yield a semi-empirical relation that gives the increase in drop size with holdup over the zero holdup value. The relation explains some divergences among reported experimental results and correlates all data from similarly stabilized systems. Author

Subject Categories:

  • Industrial Chemistry and Chemical Processing

Distribution Statement:

APPROVED FOR PUBLIC RELEASE