Cavitation Prevention with Roughened Surface
Publication: Journal of Hydraulic Engineering
Volume 127, Issue 10
Abstract
Experiments show that a rough surface reduces the pressure drop and likelihood of cavitation downstream of the roughness. A rough surface upstream of an irregularity significantly reduces the pressure drop caused by the irregularity. The effect of the rough surface is a function of the roughness d/s and can prevent cavitation damage. If an irregularity is inevitable, increasing the roughness of the upstream surface in front of the irregularity will reduce the possibility of cavitation caused by the irregularity. For the curved open channel used in this study of the flow in a spillway, the critical height of the irregularity was increased six to eight times at the downstream tangential point of the curve, and the negative pressure caused by the irregularity was reduced enough to prevent cavitation.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
Arndt, R., and Ippen, A. T. ( 1968). “Rough surface effects on cavitation inception.” Trans. ASME, 90, Ser. D Tr, Basic Engineering, 249–261.
2.
Knapp, R. T., Daily, J. W., and Hamitt, F. G. ( 1970). Cavitation, McGraw-Hill, New York, 63–66.
3.
Nie, M. X. (1984). “Laboratory study of cavitation problems of the invert in steep open channels.”J. Hydr. Engrg., No. 6, 06, Beijing, 28–35.
4.
Walobief, G. A. ( 1965). “Cavitation inception of roughness on the concrete surface.” Proc., BNEEG, T. 78.
Information & Authors
Information
Published In
History
Received: Aug 25, 2000
Published online: Oct 1, 2001
Published in print: Oct 2001
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.