SIMULATION OF FLOW AND SEDIMENT PATTERN WITH SPURDIKES SERIES IN A 90 DEGREE MILD BEND USING CCHE2D MODEL

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.

ARMAN A.; ZAHIRI J.; FATAHI P.

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

Journal Paper

Paper Information

Journal: Journal of Water and Soil Conservation Year:2017 | Volume:24 | Issue:3 Page(s): 21-39

Download Full-Text

Persian Verion

View:

977

Download:

Cites:

Information Journal Paper

Title

SIMULATION OF FLOW AND SEDIMENT PATTERN WITH SPURDIKES SERIES IN A 90 DEGREE MILD BEND USING CCHE2D MODEL

Author(s)

ARMAN A. | ZAHIRI J. | FATAHI P. | Issue Writer Certificate

Keywords

SPUR DIKESQ1

FLOW AND SEDIMENT PATTERNQ1

90 DEGREE BENDQ2

CCHE2D MODELQ1

Abstract

Background and Objectives: One of the highest losses due to natural disasters is bank erosion. Rivers affected by erosion and sedimentation are subject to various changes such as change of direction, movement in transverse and longitudinal directions, bed level changes and transformation of geometric features. There are several methods to protect the bank in the outer arc, SPUR DIKES are one of thebest and most economical methods used in most parts of the world. In this study, flow and sedimentpatterns in a 90 degree mild bendwith and without SPUR DIKES by changing the position and length of the SPUR DIKES with Configurations 15%, 20% and 25% of the flume width was examined using numerical model CCHE2D and by considering the hydraulic performance of SPUR DIKES the optimum combination of parameters, length and position of spur dike in the bend were investigated.Materials and Methods: The bend used in the numerical simulation in this study isa 90 degree mild bend flume with 70 cm width in hydraulic laboratory of Shahid Chamran University. In order to simulate the flow and sedimentpattern the numerical model CCHE2D was used in this study. This model is a two-dimensional hydrodynamic model which has been prepared and developed at the International Science and hydraulic center of Mississippi School of Computational Engineering in America.Results: Hydraulic and sedimentary results were verified by comparing the simulated results by model with experimental results. The results indicate the numerical models high capability in simulating the FLOW AND SEDIMENT PATTERN in the bend. Comparison of the model and experimental velocity results indicates an accuracy of more than 94 percent. The sediment validation also indicated that the models accuracy in estimating the sediment erosion and deposition is over 90%.Conclusion: The results show that by increasing the length of the SPUR DIKES, the maximum velocity and depth of erosion and sedimentation also increases. For example, the maximum scour depth of SPUR DIKES with length equal to 15 and 20 percent of flume width compared to SPUR DIKES with 25 percent of flume width length decreases 44% and 33% respectively. Also the maximum velocity of SPUR DIKES with 15 and 20 percent of flume width length decreases 9% and 16% respectively compared to SPUR DIKES with 25 percent of flume width length. The results show that the erosion and sedimentation pattern of SPUR DIKES with length equal to 20% of flume width is preferred. Because, firstly they divert the flow to the center of the main channel with causing the least changes in the channel bed. Secondly, the SPUR DIKES with 15% and 25% of the channel width length cause a massive volume of sedimentation in the inner arc of bend.

Cites

No record.

References

No record.

Cite

APA: Copy

ARMAN, A., ZAHIRI, J., & FATAHI, P.. (2017). SIMULATION OF FLOW AND SEDIMENT PATTERN WITH SPURDIKES SERIES IN A 90 DEGREE MILD BEND USING CCHE2D MODEL. JOURNAL OF WATER AND SOIL CONSERVATION (JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES), 24(3), 21-39. SID. https://sid.ir/paper/156156/en

Vancouver: Copy

ARMAN A., ZAHIRI J., FATAHI P.. SIMULATION OF FLOW AND SEDIMENT PATTERN WITH SPURDIKES SERIES IN A 90 DEGREE MILD BEND USING CCHE2D MODEL. JOURNAL OF WATER AND SOIL CONSERVATION (JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES)[Internet]. 2017;24(3):21-39. Available from: https://sid.ir/paper/156156/en

IEEE: Copy

A. ARMAN, J. ZAHIRI, and P. FATAHI, “SIMULATION OF FLOW AND SEDIMENT PATTERN WITH SPURDIKES SERIES IN A 90 DEGREE MILD BEND USING CCHE2D MODEL,” JOURNAL OF WATER AND SOIL CONSERVATION (JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES), vol. 24, no. 3, pp. 21–39, 2017, [Online]. Available: https://sid.ir/paper/156156/en

Related Journal Papers