Hydraulic Jump Properties in Irrigation Canals with Corrugated Bed

آب و خاک

Article 24, Volume 25, Issue 3, July 2011   

Document Type: Research Article

DOI: 10.22067/jsw.v0i0.9702

Authors

R. Badizadegan^{* 1}; K. Esmaili²; M. Faghfour Maghrebi¹; M. Saneie³

¹Ferdowsi University of Mashhad

²Faculty of Agriculture, Ferdowsi University of Mashhad

³Soil Conservation and Watershed Management Research Center, Tehran

Abstract

Abstract
One of the most frequently encountered cases of rapid varied flow is the hydraulic jump. It occurs when a supercritical open channel flow changes into sub critical flow. In the present research, the experimental study of the hydraulic jump on seven sinusoidal corrugated beds with different wave steepness. The wave steepness of sinusoidal corrugated beds is in the range of 0.1667 to 0.75 and Froude number was in the range of 4.5 to 12.26. The results showed that the tail water depth of a jump on a corrugated bed is about 20% smaller than that on smooth bed in Froude number 12 and the length of jump on corrugated beds is about 35% less than that for smooth bed.

Keywords: Hydraulic jump, Corrugated bed, Wave steepness