PIANO KEY WEIRS WITH POSITIVE PARAPET WALL

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.

AFZALIAN A.; AHADIYAN J.

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

Journal Paper

Paper Information

Journal: Water and Soil Science Year:2015 | Volume:25 | Issue:4/2 Page(s): 97-107

Download Full-Text

Persian Verion

View:

941

Download:

Cites:

Information Journal Paper

Title

PIANO KEY WEIRS WITH POSITIVE PARAPET WALL

Author(s)

AFZALIAN A. | AHADIYAN J. | Issue Writer Certificate

Keywords

ANGLED PARAPET WALLQ3

INCREASE OF WATER LEVELQ3

LABYRINTH WEIRSQ3

OGEE WEIRSQ3

PIANO KEY WEIRSQ3

Abstract

Piano Key weirs (PKWs) are appropriate alternatives to linear overflow weirs, because of increasing the discharge at the unit length of the unregulated spillway inlet in identical heads and spillway widths. The purpose of this study was to investigate the effect of ANGLED PARAPET WALL on the discharge flow and water level upstream PIANO KEY WEIRS and its comparison with the discharge on OGEE WEIRS. To achieve this goal, a Piano Key Weir was constructed as a laboratory model with a constant height of 30 cm and Parapet Wall with positive slopes of 3, 5.5 and 8 degrees in a laboratory flume with 80 cm width, 10 m length and 60 cm height. The results indicated that among the models of Parapet Walls the one with slope of 8 degrees had the greatest impact on the upstream water level of the weir. This increasing relative to the model without Parapet Wall was about of 10 percent. Also, the results showed that at the angle of 8 degrees, the Parapet Wall had lower discharge flow efficiency, as compared to the same at the angles of 3 and 5.5 degrees; but still it was 40 percent more than the discharge flow of the OGEE WEIRS. However, the Parapet Walls with 5.5 and 3 degrees angles led to 7 and 3 percent increase in water level, respectively, compared to the model without Parapet Wall. In addition, the Parapet Wall with 5.5 and 3 degrees angles in comparison to the OGEE WEIRS showed 72% and 140% increase in the discharge flow, respectively. Moreover, it was obtained that the increase of discharge efficiency with increase of Parapet Wall height could occurre up to a specific height.

Cites

No record.

References

No record.

Cite

APA: Copy

AFZALIAN, A., & AHADIYAN, J.. (2015). PIANO KEY WEIRS WITH POSITIVE PARAPET WALL. WATER AND SOIL SCIENCE (AGRICULTURAL SCIENCE), 25(4/2), 97-107. SID. https://sid.ir/paper/147861/en

Vancouver: Copy

AFZALIAN A., AHADIYAN J.. PIANO KEY WEIRS WITH POSITIVE PARAPET WALL. WATER AND SOIL SCIENCE (AGRICULTURAL SCIENCE)[Internet]. 2015;25(4/2):97-107. Available from: https://sid.ir/paper/147861/en

IEEE: Copy

A. AFZALIAN, and J. AHADIYAN, “PIANO KEY WEIRS WITH POSITIVE PARAPET WALL,” WATER AND SOIL SCIENCE (AGRICULTURAL SCIENCE), vol. 25, no. 4/2, pp. 97–107, 2015, [Online]. Available: https://sid.ir/paper/147861/en

Related Journal Papers