"This study is concerned with the effect of entrained air bubbles on the open-channel hydraulics of water flowing at low velocities. The air bubbles are introduced into the flowing water by injecting diffused compressed air along the channel bottom. The variations of the velocity profile and velocity distribution energy coefficient of aerated and nonaerated flow are discussed. Empirical equations have been determined for the air concentration and increased depth of flow or "bulking" of the aerated open-channel flow. The investigation revealed a significant increase in the Manning roughness coefficient and the related Darcy friction factor for aerated flow relative to those for nonaerated open-channel flow. Empirical equations are presented which relate the Manning roughness coefficient and Darcy friction factor of aerated flow to the depth, velocity, and Reynolds number of nonaerated open-channel flow. The results of this investigation are valid only within the range of depths and velocities studied and are further restricted to the geometry and pressure range of the particular air diffuser system utilized in the study"--Abstract, page ii.
Harbaugh, Terence E., 1935-1973
Armstrong, James C.
Howell, Ronald H. (Ronald Hunter), 1935-
Civil, Architectural and Environmental Engineering
M.S. in Civil Engineering
University of Missouri--Rolla
xi, 84 pages
© 1969 Danny Lee Fread, All rights reserved.
Thesis - Open Access
Library of Congress Subject Headings
Channels (Hydraulic engineering)
Water -- Air entrainment
Print OCLC #
Electronic OCLC #
Link to Catalog Record
Fread, D. L., "Some aspects of aerated open-channel flow at shallow depths and low velocities" (1969). Masters Theses. 5314.