Investigation of Pressure Fluctuations of Hydraulic Jump on Rough Bed

Document Type : Research Paper

Authors

1 Ph.D. Student, Water Engineering Department, Faculty of Agriculture, University of Tabriz, Iran

2 2- Professor, Water Engineering Department, Faculty of Agriculture, University of Tabriz, Iran.

3 Professor, Water Engineering Department, Faculty of Agriculture, University of Tabriz, Iran.

4 Ph.D. of Water Structures Engineering, Ahvaz, Iran.

5 Assistant Professor, Water Engineering Department, Faculty of Agriculture, University of Tabriz, Iran.

Abstract

A hydraulic jump is a sudden transition from a supercritical to subcritical flow with a broad range of turbulence Scales. The fluctuating nature of the flow such as oscillations of jump toe position and production of large eddies are visible in pseudo-periodic manners. Energy dissipation of hydraulic jump occurs with Low-frequency large scale pressure fluctuations which can cause damage and erosion and endanger the security of the structures. In the present study, the effects of discontinuous roughness elements of lozenge shape on the fluctuations of pressure in hydraulic jump have been investigated.

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References

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Irrigation Sciences and Engineering
Volume 41, Issue 2
June 2018
Pages 197-210

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History

  • Receive Date: 15 August 2016
  • Revise Date: 29 January 2017
  • Accept Date: 14 March 2017
  • Publish Date: 22 June 2018

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