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Numerical and experimental study of damped oscillating manometers: I. Newtonian fluids
Author(s) -
Biery John C.
Publication year - 1963
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.690090508
Subject(s) - mechanics , newtonian fluid , maxima and minima , viscosity , pressure measurement , surface tension , classical mechanics , flow (mathematics) , non newtonian fluid , physics , thermodynamics , mathematics , mathematical analysis
The time‐dependent behavior of Newtonian oscillating manometers was studied experimentally and mathematically. The manometers were simulated by numerically integrating the axial component of the equation of motion in cylindrical coordinates. Modifications in the driving‐force term were made to include end effects of surface tension and flow reversal. The integrations showed that the velocity profiles in the manometer were not parabolic and contained many maxima and minima, particularly when the fluid had a low viscosity. Good agreement was obtained between experimental and simulation frequencies and damping factors.