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Developing and fully developed velocity profiles for inelastic power law fluids in an annulus
Author(s) -
Tiu Carlos,
Bhattacharyya Satinath
Publication year - 1974
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690200612
Subject(s) - laminar flow , annulus (botany) , power law , mechanics , dimensionless quantity , power law fluid , materials science , flow (mathematics) , thermodynamics , physics , mathematics , statistics , composite material
Developing and fully developed velocity profiles with respect to position for laminar flow of inelastic fluids in an annulus were measured using streak photography. The polymer solutions used in the investigation were found to exhibit power law behavior under the present experimental conditions. The experimental results substantiated published theoretical solutions for developing and fully developed flow of power‐law fluids in annuli, and also indicated good agreement between the measured and predicted entrance lengths. The dimensionless entrance length was found to increase with increasing flow behavior index for the inelastic power‐law fluids.