THEORETICAL AND EXPERIMENTAL INVESTIGATION OF DIVERGING HYDRAULIC JUMP ON ADVERSE SLOPE

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KASI A.; FARHOUDI J.; ESMAEILI VARAKI M.

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Journal Paper

Paper Information

Journal: IRANIAN WATER RESEARCH JOURNAL Year:2012 | Volume:5 | Issue:9 Page(s): 121-129

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Title

THEORETICAL AND EXPERIMENTAL INVESTIGATION OF DIVERGING HYDRAULIC JUMP ON ADVERSE SLOPE

Author(s)

KASI A. | FARHOUDI J. | ESMAEILI VARAKI M. | Issue Writer Certificate

Keywords

STILLING BASINQ2

ADVERSE SLOPEQ2

DIVERGING CROSS SECTIONQ2

HYDRAULIC JUMPQ1

Abstract

To reduce the constructional costs of STILLING BASINs, changes in geometries of cross section and plan of basin are sometimes used to adopt the basin with the upstream and downstream sections to eliminate transition structures. Any changes in the geometry of the basin would cause changes in the conditions and characteristics of the HYDRAULIC JUMP. Hence, in this research, the effects of variation in both the adverse bed slope and the diverging angle of a gradually expanding STILLING BASIN with rectangular section on the jump conditions were investigated both experimentally and theoretically. The experimental tests were conducted in a specially designed model for a wide range of bed slopes and longitudinal divergences of the basin walls. The important parameters of the jump, such as the length, sequent depth and the energy loss, were computed and compared to those in the classic jumps. An experiment was performed for 4 diverging angle (3, 5, 7 and 10o) and adverse bed slopes (2.27, 4.1, 5.61 and 8 percent) in addition to classic jump at wide range of Froude numbers (2.5-9). There is a good agreement between experimental and theoretical values of sequent depths of jump. The results show that for each diverging angle, increase in adverse bed slope from horizontal bed to 8 percent, caused approximately a decrease of the sequent depth and relative length of jump 47 and 35 percent respectively, and also an increase of the relative energy loss by 20 percents.

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References

THEORETICAL AND EXPERIMENTALSTUDY OF GRADUALLY DIVERGING HYDRAULIC JUMP IN TRAPEZOIDALSECTIONS

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APA: Copy

KASI, A., FARHOUDI, J., & ESMAEILI VARAKI, M.. (2012). THEORETICAL AND EXPERIMENTAL INVESTIGATION OF DIVERGING HYDRAULIC JUMP ON ADVERSE SLOPE. IRANIAN WATER RESEARCH JOURNAL, 5(9), 121-129. SID. https://sid.ir/paper/159761/en

Vancouver: Copy

KASI A., FARHOUDI J., ESMAEILI VARAKI M.. THEORETICAL AND EXPERIMENTAL INVESTIGATION OF DIVERGING HYDRAULIC JUMP ON ADVERSE SLOPE. IRANIAN WATER RESEARCH JOURNAL[Internet]. 2012;5(9):121-129. Available from: https://sid.ir/paper/159761/en

IEEE: Copy

A. KASI, J. FARHOUDI, and M. ESMAEILI VARAKI, “THEORETICAL AND EXPERIMENTAL INVESTIGATION OF DIVERGING HYDRAULIC JUMP ON ADVERSE SLOPE,” IRANIAN WATER RESEARCH JOURNAL, vol. 5, no. 9, pp. 121–129, 2012, [Online]. Available: https://sid.ir/paper/159761/en

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