Premium
The pipeline flow of capsules: Part 7 ‐ an experimental investigation of the transport by two oils of single cylindrical and spherical capsules with density equal to that of the oil
Author(s) -
Ellis H. S.,
Bolt L. H.
Publication year - 1964
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450420504
Subject(s) - reynolds number , laminar flow , turbulence , mechanics , flow (mathematics) , range (aeronautics) , falling (accident) , materials science , physics , mathematics , thermodynamics , composite material , medicine , environmental health
Critical Reynolds numbers were revealed by the study at which the velocity ratio curves typically achieved minimum or maximum values. The pronounced critical condition at Reynolds number about 1,000 is of particular interest, falling as it does in the middle of the Reynolds number range widely regarded as yielding laminar flow in a long circular pipe, but coinciding with the first manifestations of turbulence reported in previous studies. Velocity ratios for both spherical and cylindrical capsules were found to vary from about 1.10 to 1.75 in the laminar flow regime, and from 1.10 to 1.30 at the highest Reynolds numbers.