EXPERIMENTAL INVESTIGATION OF THE EFFECT OF TAIL WATER LEVEL ON DISCHARGE COEFFICIENT OF TRAPEZOIDAL LABYRINTH WEIRS

Q: How can I download an article?

To download an article from SID, first log in to the site, search for the article title, and click on the 'Download Article' option.

Q: How can I download an ISI article?

To download an ISI article on SID, enter the keyword or article title in the search bar, view the relevant results, click on the desired article, and select the 'Download Article' option.

Q: How can I access the SID database?

To access the SID database, visit SID.ir, create an account, and log in to access scientific resources.

Q: Is downloading articles from SID free?

Some articles on SID are available for free, while others require payment. Details are specified on the article's page.

SHAFAATTALAB DEGHANI H.; ESMAEILI VARAKI M.; ASHRAFZADEH A.

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Journal Paper

Paper Information

Journal: Irrigation and Drainage Structures Engineering Research Year:2017 | Volume:17 | Issue:67 Page(s): 63-80

Download Full-Text

Persian Verion

View:

804

Download:

Cites:

Information Journal Paper

Title

EXPERIMENTAL INVESTIGATION OF THE EFFECT OF TAIL WATER LEVEL ON DISCHARGE COEFFICIENT OF TRAPEZOIDAL LABYRINTH WEIRS

Author(s)

SHAFAATTALAB DEGHANI H. | ESMAEILI VARAKI M. | ASHRAFZADEH A. | Issue Writer Certificate

Keywords

DISCHARGE COEFFICIENTQ1

LABYRINTH WEIRQ2

SEDIMENTATIONQ2

REGULATE STRUCTUREQ1

TAIL WATER LEVELQ1

Abstract

Labyrinth weirs are often a favorable design option to regulate water surface elevation in upstream canal and increase flow capacity. Due to their hydraulic performance and geometric versatility, LABYRINTH WEIRs have been used extensively in canals, rivers, ponds, and reservoirs as energy dissipaters, flow aerators, and spillways. Nevertheless, it can be difficult for engineer to optimally design, LABYRINTH WEIRs due to the complexities of nappe behavior and many geometric and hydraulic variables. A level of SEDIMENTATION in upstream and submergence in downstream of the weirs are effective parameters which affects the DISCHARGE COEFFICIENT, and the performance of these structures. In this investigation effects of 408 tests of different levels of tail water (increase of downstream canal bed level to one third and two third of weir height) and upstream SEDIMENTATION level (non-sedimentation and SEDIMENTATION level of 90 percent of weir height) on the DISCHARGE COEFFICIENT of different geometers of trapezoidal LABYRINTH WEIRs was investigated experimentally. The analysis of results indicated that increase of TAIL WATER LEVEL to one third of weir height didn’taffect on the DISCHARGE COEFFICIENT of weirs. By increasing tail water depth to two third of weir height, air cavity volume under nappe decreased. Therefore, the flow pattern of the nappe changed from leaping to clinging condition and upstream head decreased. As a result, the LABYRINTH WEIRs DISCHARGE COEFFICIENT in non-sedimentation and SEDIMENTATION level of 90 percent of weir height increased about 3.3 to 12.2 and 2.1 to 9.2 in comparison with non submergence tail water for maximum discharge respectively. Finally, the statistical equation for estimation of the DISCHARGE COEFFICIENT of trapezoidal LABYRINTH WEIRs for upstream SEDIMENTATION and submerged conditions was developed.

Cites

No record.

References

No record.

Cite

APA: Copy

SHAFAATTALAB DEGHANI, H., ESMAEILI VARAKI, M., & ASHRAFZADEH, A.. (2017). EXPERIMENTAL INVESTIGATION OF THE EFFECT OF TAIL WATER LEVEL ON DISCHARGE COEFFICIENT OF TRAPEZOIDAL LABYRINTH WEIRS. IRRIGATION AND DRAINAGE STRUCTURES ENGINEERING RESEARCH , 17(67), 63-80. SID. https://sid.ir/paper/261334/en

Vancouver: Copy

SHAFAATTALAB DEGHANI H., ESMAEILI VARAKI M., ASHRAFZADEH A.. EXPERIMENTAL INVESTIGATION OF THE EFFECT OF TAIL WATER LEVEL ON DISCHARGE COEFFICIENT OF TRAPEZOIDAL LABYRINTH WEIRS. IRRIGATION AND DRAINAGE STRUCTURES ENGINEERING RESEARCH [Internet]. 2017;17(67):63-80. Available from: https://sid.ir/paper/261334/en

IEEE: Copy

H. SHAFAATTALAB DEGHANI, M. ESMAEILI VARAKI, and A. ASHRAFZADEH, “EXPERIMENTAL INVESTIGATION OF THE EFFECT OF TAIL WATER LEVEL ON DISCHARGE COEFFICIENT OF TRAPEZOIDAL LABYRINTH WEIRS,” IRRIGATION AND DRAINAGE STRUCTURES ENGINEERING RESEARCH , vol. 17, no. 67, pp. 63–80, 2017, [Online]. Available: https://sid.ir/paper/261334/en

Related Journal Papers