Research Article
Feb 1973
Turbulence in Shallow Water Flow under Rainfall
Authors: Ismail T. Kisisel, AM.ASCE, Ramachandra A. Rao, AM.ASCE, and Jacques W. Delleur, M.ASCEAuthor Affiliations
Publication: Journal of the Engineering Mechanics Division
Volume 99, Issue 1
Abstract
The effects of the rainfall intensity, of the channel roughness and of the bed slope on the mean velocity and on the turbulence characteristics of shallow water flow were investigated. The mean and fluctuating velocities were measured by using constant-temperature hot-film anemometers which were equipped with specially designed cylindrical sensors. The friction factor values increased in the presence of rainfall for flows over both the smooth and rough boundaries. The mean velocity distributions were found to be logarithmic. Results of the special computations indicated that for flows with rainfall the energy content increased in the high frequency range and the spectra were modified compared to flows without rainfall. Macroscales of turbulence for flows with rainfall were found to increase whereas the microscales were found to decrease slightly toward the free surface in comparison with the macro and microscales for flows without rainfall.
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Published In
Journal of the Engineering Mechanics Division
Volume 99 • Issue 1 • February 1973
Pages: 31 - 53
Copyright
© 1973 American Society of Civil Engineers.
History
Published in print: Feb 1973
Published online: Feb 3, 2021
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Authors
Affiliations
Ismail T. Kisisel, AM.ASCE
Middle East Tech. Univ., Ankara, Turkey; formerly TUBITAK (Turkish Scientific and Tech. Research Council) Scholar at the School of Civ. Engrg., Purdue Univ., Lafayette, Ind.
Ramachandra A. Rao, AM.ASCE
Research Asst., School of Civ. Engrg., Purdue Univ., Lafayette, Ind.
Jacques W. Delleur, M.ASCE
Hydr. Engr., School of Civ. Engrg., Purdue Univ., Lafayette, Ind.
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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.