HYDRAULIC JUMP ON A BED WITH HALF CYLINDRICAL SHAPE BARS

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PARSAMEHR P.; HOSSEINZADEH DALIR A.; FARSADIZADEH D.; ABBASPOUR A.

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Paper Information

Journal: Journal of Water and Soil Year:2012 | Volume:26 | Issue:3 Page(s): 775-785

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Title

HYDRAULIC JUMP ON A BED WITH HALF CYLINDRICAL SHAPE BARS

Author(s)

PARSAMEHR P. | HOSSEINZADEH DALIR A. | FARSADIZADEH D. | ABBASPOUR A. | Issue Writer Certificate

Keywords

BED SHEAR STRESS COEFFICIENTQ2

HYDRAULIC JUMPQ2

ENERGY LOSSQ1

ROUGH BEDQ2

Abstract

Hydraulic jump is generally used for the dissipation of excess kinetic energy downstream of hydraulic structures such as spillway, chutes and gates. In the present research, HYDRAULIC JUMP characteristics on a new ROUGH BED -with half cylindrical shape bars- have been investigated experimentally. The roughness elements were used with three different heights and four different longitudinal spacing. Experiments were performed for a range of Froude numbers from 4.6 to 7.4.The results showed that the sequent depth ratio and the length of the jump on ROUGH BEDs are 25.35% and 38.5% smaller and ENERGY LOSS is 18% greater than classic jump. The BED SHEAR STRESS COEFFICIENT on roughed bed is about 13 times of its corresponding smooth bed. These effects are intensified as the height, spacing of the rough bars and the Froude number of flow increased. Some empirical relations for sequent depth ratio, length of the HYDRAULIC JUMP, relative ENERGY LOSS and BED SHEAR STRESS COEFFICIENT have been introduced.

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References

HYDRAULIC JUMP PROPERTIES IN IRRIGATION CANALS WITH CORRUGATED BED

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APA: Copy

PARSAMEHR, P., HOSSEINZADEH DALIR, A., FARSADIZADEH, D., & ABBASPOUR, A.. (2012). HYDRAULIC JUMP ON A BED WITH HALF CYLINDRICAL SHAPE BARS. JOURNAL OF WATER AND SOIL (AGRICULTURAL SCIENCES AND TECHNOLOGY), 26(3), 775-785. SID. https://sid.ir/paper/141894/en

Vancouver: Copy

PARSAMEHR P., HOSSEINZADEH DALIR A., FARSADIZADEH D., ABBASPOUR A.. HYDRAULIC JUMP ON A BED WITH HALF CYLINDRICAL SHAPE BARS. JOURNAL OF WATER AND SOIL (AGRICULTURAL SCIENCES AND TECHNOLOGY)[Internet]. 2012;26(3):775-785. Available from: https://sid.ir/paper/141894/en

IEEE: Copy

P. PARSAMEHR, A. HOSSEINZADEH DALIR, D. FARSADIZADEH, and A. ABBASPOUR, “HYDRAULIC JUMP ON A BED WITH HALF CYLINDRICAL SHAPE BARS,” JOURNAL OF WATER AND SOIL (AGRICULTURAL SCIENCES AND TECHNOLOGY), vol. 26, no. 3, pp. 775–785, 2012, [Online]. Available: https://sid.ir/paper/141894/en

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