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Particle Residence Time Distributions in Two‐phase Flow in Straight Round Conduit
Author(s) -
YANG B. BARRY,
SWARTZEL KENNETH R.
Publication year - 1992
Publication title -
journal of food science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 150
eISSN - 1750-3841
pISSN - 0022-1147
DOI - 10.1111/j.1365-2621.1992.tb05525.x
Subject(s) - residence time (fluid dynamics) , particle (ecology) , flow (mathematics) , turbulence , mechanics , residence , particle density , residence time distribution , particle laden flows , two phase flow , chemistry , physics , thermodynamics , geology , volume (thermodynamics) , geotechnical engineering , demography , oceanography , sociology
Residence times were studied for single particles (polystyrene spheres 19.1 mm diam) in the straight portion of the holding section of a continuous flow system. Particle residence times were all less than the mean residence time of fluid; their ranges were within particle‐to‐fluid residence time ratios of 0.8 to 1.0. The velocities of the fastest moving particles were all about 1.25 times the mean fluid velocity in the turbulent flow regime. Particle density was important in the flow patterns of two‐phase flow. The effect of particle‐to‐fluid density ratios on the particle residence time followed a quadratic function where particles with density ratio of 1.01 had the least residence time.