Research Article
Dec 1981
Measurement of Air in Flowing Water
Authors: Alan F. Babb, M.ASCE, and Henry C. AusAuthor Affiliations
Publication: Journal of the Hydraulics Division
Volume 107, Issue 12
Abstract
Procedures are developed using gamma ray and hot-film anemometer methods for determining void fraction and sizes of air bubbles entrained in flowing water. The hot-film data are analyzed by computer. The gamma ray data are used to determine the duration factor, a term accounting for the additional time that must be added to the time sensed by the hot-film anemometer to arrive at the true bubble duration. The duration factor is found to be a function of velocity. The procedures are developed using a hydraulic jump with Froude number 6. The continuity equation is used in conjunction with void fraction and mean velocity data to compute the location of air entering and leaving the jump.
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Published In
Journal of the Hydraulics Division
Volume 107 • Issue 12 • December 1981
Pages: 1615 - 1630
Copyright
© 1981 American Society of Civil Engineers.
History
Published in print: Dec 1981
Published online: Feb 3, 2021
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Affiliations
Alan F. Babb, M.ASCE
Head of Albrook Hydraulics Lab., and Prof. of Civ. and Environmental Engrg., Washington State Univ., Pullman, Wash. 99164
Henry C. Aus
Project Mgr., Pazooki and McMenamin Consulting Engrs., Silverdale, Wash. 98383
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Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.