Evaluation of a New Method for Calculating Discharge in Oblique Linear 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.

ALLAHDADI KAZEM; Ansari Ghojghar Mohammad; PARSI EHSAN; BEHDARVANDI ASKAR MEHDI

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

Journal Paper

Paper Information

Journal: Iranian Journal of Soil and Water Research Year:2021 | Volume:52 | Issue:1 Page(s): 251-259

Download Full-Text

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

Persian Verion

View:

242

Download:

Cites:

Information Journal Paper

Title

Evaluation of a New Method for Calculating Discharge in Oblique Linear Weirs

Author(s)

ALLAHDADI KAZEM | Ansari Ghojghar Mohammad | PARSI EHSAN | BEHDARVANDI ASKAR MEHDI | Issue Writer Certificate

Keywords

Critical DepthQ1

Discharge CoefficientQ2

Oblique WeirsQ2

Abstract

Sharp crested weirs are one of the most important structures in the river intake and are the most common instruments for measuring the intensity of flow in open channels, which are widely used in water transmission systems and irrigation and drainage canals to regulate water levels and floods. One of the types of sharp crested weirs is angular weir, in which by increasing the effective length of the crown, more discharge is allowed to pass with less head, resulting a higher efficiency and consequently a reduction in irrigation system costs. In this study, 165 existing laboratory data obtained from two flumes with widths of 0. 5 and 0. 52 m and with seven ratios of weir length to flume width (L/B) of 1. 14 and 3. 86 and six weir crown heights of 0. 10 m to 0. 506 m were used in free flow conditions. In this study, the Critical Depth of flow passage over the weir crown was used to calculate the flow rate. Also, a new function was developed to calculate the flow rate directly and without the need for flow coefficient by presenting the geometric coefficient of the weir, including all the geometric characteristics of the structure. The results of this study showed that by increasing the height of the crown, the flow head and the weir angle relative to the flow horizon increase. The results also showed that the new relationship with R 2 = 0. 9984 has high accuracy for measuring Critical Depth and flow rate.

Cites

No record.

References

No record.

Cite

APA: Copy

ALLAHDADI, KAZEM, Ansari Ghojghar, Mohammad, PARSI, EHSAN, & BEHDARVANDI ASKAR, MEHDI. (2021). Evaluation of a New Method for Calculating Discharge in Oblique Linear Weirs. IRANIAN JOURNAL OF SOIL AND WATER RESEARCH, 52(1 ), 251-259. SID. https://sid.ir/paper/368465/en

Vancouver: Copy

ALLAHDADI KAZEM, Ansari Ghojghar Mohammad, PARSI EHSAN, BEHDARVANDI ASKAR MEHDI. Evaluation of a New Method for Calculating Discharge in Oblique Linear Weirs. IRANIAN JOURNAL OF SOIL AND WATER RESEARCH[Internet]. 2021;52(1 ):251-259. Available from: https://sid.ir/paper/368465/en

IEEE: Copy

KAZEM ALLAHDADI, Mohammad Ansari Ghojghar, EHSAN PARSI, and MEHDI BEHDARVANDI ASKAR, “Evaluation of a New Method for Calculating Discharge in Oblique Linear Weirs,” IRANIAN JOURNAL OF SOIL AND WATER RESEARCH, vol. 52, no. 1 , pp. 251–259, 2021, [Online]. Available: https://sid.ir/paper/368465/en

Related Journal Papers