EXPERIMENTAL STUDY OF EFFECT OF HYDRAULIC AND GEOMETRIC PROPERTIES OF SIDE WEIR ON LATERAL VARIATION OF BED FORM DIMENSIONS OF MAIN CHANNEL

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.

HASANZADEH M.; AYYOUBZADEH S.A.; SANEIE M.; FARAMARZ M.

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

Journal Paper

Paper Information

Journal: Modares Civil Engineering journal Year:2017 | Volume:17 | Issue:1 Page(s): 79-87

Download Full-Text

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

Persian Verion

View:

637

Download:

Cites:

Information Journal Paper

Title

EXPERIMENTAL STUDY OF EFFECT OF HYDRAULIC AND GEOMETRIC PROPERTIES OF SIDE WEIR ON LATERAL VARIATION OF BED FORM DIMENSIONS OF MAIN CHANNEL

Author(s)

HASANZADEH M. | AYYOUBZADEH S.A. | SANEIE M. | FARAMARZ M. | Issue Writer Certificate

Keywords

SIDE WEIRQ1

BED FORM DIMENSIONSQ1

FROUDE NUMBER EFFECTQ2

DIVERSION RATIOQ1

Abstract

SIDE WEIR is one of the most important structures in flood control projects. The structure can be designed based on classic design procedure, provided the main channel bed is rigid. However, in the most practical cases, the main channel bed is movable; Consequently the changes in bed can produce wavelike patterns as bed forms. Additional effects of SIDE WEIR on bed forms may also be produced due to an aggradation of sediment deposits in front of the weir. This causes additional bed resistance and increase in flow depth in comparison with the situation with no structure. Thus, the present research studies the effect of SIDE WEIR hydraulic and geometric properties -including Froude Numbers, diversion discharge ratios and flow depths- on bed forms and its effect on design conditions. A set of experimental program -with 9 individual tests- was conducted in a flume with dimensions of 0.85 m width, 0.40 m height and 10 m length. The flume is located on a mobile bed, having median sediment particle size of 0.23 mm, running with SIDE WEIRs with crest lengths of 20, 40 and 60 cm. Furthermore, 3 experiments were conducted without using any weir, as bench mark runs. The sediment bed level at the end of each run was recorded using the automatic bed profiler in a distance of 220 cm of main channel, so that the weir is located in the middle of the reach. These measurements were carried out in a net of points with incremental distance of 5 and 3 cm in longitudinal and transverse directions, respectively. The dimensions of bed forms including wave length and height were then determined using the well-known crest-through method. Dimensional analysis is undertaken for dependent and independent variables involved in the process of the phenomenon including properties of fluid, sediment particles, channel and weir geometry. Non-dimensional parameters are also introduced. Results indicate that the effect of flow depth, discharge, and DIVERSION RATIO on BED FORM DIMENSIONS are significant, and increase in these parameters will cause increase in both length and depth of bed forms. In addition, a number of four equations are suggested for the prediction of BED FORM DIMENSIONS in terms of characteristic parameters for both cases with and without using the weir. The parameters of the equations were calibrated using randomly selected 80% of all experimental data and the equations are then verified using the remaining 20%. Verification results revealed that the relation may predict BED FORM DIMENSIONS within the error values of 50 and 30 percent for the cases of using weir or not, respectively. Analyzing these relations showed an important influence of applying SIDE WEIRs on lateral variation of BED FORM DIMENSIONS in the main channel. Thus, in comparison with the case with no SIDE WEIR, an increase of up to 70% and 2% of channel width may occur in bed form length and height, respectively, near the SIDE WEIR.

Cites

No record.

References

No record.

Cite

APA: Copy

HASANZADEH, M., AYYOUBZADEH, S.A., SANEIE, M., & FARAMARZ, M.. (2017). EXPERIMENTAL STUDY OF EFFECT OF HYDRAULIC AND GEOMETRIC PROPERTIES OF SIDE WEIR ON LATERAL VARIATION OF BED FORM DIMENSIONS OF MAIN CHANNEL. MODARES CIVIL ENGINEERING JOURNAL, 17(1 ), 79-87. SID. https://sid.ir/paper/256939/en

Vancouver: Copy

HASANZADEH M., AYYOUBZADEH S.A., SANEIE M., FARAMARZ M.. EXPERIMENTAL STUDY OF EFFECT OF HYDRAULIC AND GEOMETRIC PROPERTIES OF SIDE WEIR ON LATERAL VARIATION OF BED FORM DIMENSIONS OF MAIN CHANNEL. MODARES CIVIL ENGINEERING JOURNAL[Internet]. 2017;17(1 ):79-87. Available from: https://sid.ir/paper/256939/en

IEEE: Copy

M. HASANZADEH, S.A. AYYOUBZADEH, M. SANEIE, and M. FARAMARZ, “EXPERIMENTAL STUDY OF EFFECT OF HYDRAULIC AND GEOMETRIC PROPERTIES OF SIDE WEIR ON LATERAL VARIATION OF BED FORM DIMENSIONS OF MAIN CHANNEL,” MODARES CIVIL ENGINEERING JOURNAL, vol. 17, no. 1 , pp. 79–87, 2017, [Online]. Available: https://sid.ir/paper/256939/en

Related Journal Papers