Figure 9. formation of scour and deposition around the spur dike in the original model.

Flow-3D 모델을 이용한 수력 조건의 변화가 하천 벤드의 L 자형 스퍼 제방 주변 속도 분포에 미치는 영향

Effect of Changes in the Hydraulic Conditions on the Velocity Distribution around a L-Shaped Spur Dike at the River Bend Using Flow-3D model

Technical Journal of Engineering and Applied SciencesAvailable online at www.tjeas.com©2013 TJEAS Journal-2013-3-16/1862-1868ISSN 2051-0853 ©2013 TJEAS
Abdulmajid Matinfard(Kabi)1, Mohammad Heidarnejad1*, Javad Ahadian21. Departmentof Irrigation, Science and Research Branch, Islamic Azad University,Khuzestan, Iran2. Assistant Professor, Department of Water Sciences, Shahid Chamran University, Ahwaz, IranCorresponding Author:Mohammad Heidarnejad

ABSTRACT

하천 및 관련 구조물의 특성 및 흐름 거동에 대한 평가는 소프트웨어 사용이 불가피한 복잡한 현상입니다.

Spur dike는 굴곡과 직선 경로에서 하천 조직, 침식 제어 및 강둑 보호에 사용되는 간단한 유압 구조입니다. 이 논문에서, 굴곡부에 지정된 간격을 가진 불 침투성 Spur 둑 주변의 흐름 패턴은 다양한 배출 및 흐름 폭의 다른 좁힘 비율에 대해 평가되고, 서로 비교됩니다.

또한 L 자형 스퍼 제방 주변의 속도 분포는 유한 체적 방법을 사용하여 2 차원 및 3 차원으로 평가됩니다.

수행된 실험에 따르면 최대 속도 제한 및 이에 따라 30 ° 각도의 첫 번째 스퍼 제방에서 강 굴곡에서 90 ° 각도의 물 흐름 방향으로 마지막 스퍼 제방까지 수 세량이 감소했습니다. 그리고 흐름이 마지막 스퍼 제방에 도달하면 흐름의 모든 난류가 손실됩니다.

흐름이 마지막 스퍼 제방까지 도달할 때 흐름의 모든 난류가 손실됩니다.

원본 논문 : Phytoremediation of Lead from Soil by Lepidium sativum (flow3d.com)

Figure 1. Example of 180-degree bends of the Karun River
. The effect of the spur dike series and ineffectiveness of some of them on the scour and deposition
. The effect of the spur dike series and ineffectiveness of some of them on the scour and deposition
Figure 3. Meshing of the tested area and around a quintuple series of the spur dike in flow3D software
Figure 3. Meshing of the tested area and around a quintuple series of the spur dike in flow3D software
Figure 4. Distribution of speed around the spur dike series
Figure 4. Distribution of speed around the spur dike series
Figure 5. Speed distribution around two initial spur dikes
Figure 5. Speed distribution around two initial spur dikes
Figure 6. Distribution of the flow rate around the spur dikes with a discharge of 18 liters per second
Figure 6. Distribution of the flow rate around the spur dikes with a discharge of 18 liters per second
Figure 7. Distribution of the flow rate around the spur dike with a discharge of 25 liters per second
Figure 7. Distribution of the flow rate around the spur dike with a discharge of 25 liters per second
Figure 8. Flow pattern around the spur dikes in three dimensional form at numerical model
Figure 8. Flow pattern around the spur dikes in three dimensional form at numerical model
Figure 9. formation of scour and deposition around the spur dike in the original model.
Figure 9. formation of scour and deposition around the spur dike in the original model.

REFERENCES
Abasi Chenari S, Kamanbedast A, Ahadian J. 2011. Numerical Investigation of Angle and Geometric of L-Shape Groin on the Flow and
Erosion Regime at River Bends, World Applied Sciences Journal 15(2), ISSN 1818-4952, pp. 279–284.
Garde RJ, Subramanya K, Nambudripad KD.1961. Study of scour around spur dikes, ASCE J. the Hydraulics Division, 87(HY6), pp. 23–37.
Gray DH, Leiser AT.1982. Biotechnical Slope Protection and Erosion Control, Van Nostrand Reinhold Company, New York, NY, ISBN-10:
0442212224, pp. 259–263.
Hashemi Najafi F. 2008.Experimental investigation of scouring around L-head Groynes under Clear Water Condition, M.Sc. Thesis, Iran,
Tarbiat Modarres University.
Jahromi AR, Jahromi H, Haghighi S. 2010. Numerical simulation of flow and sediment around spur dike at a bend of 180 degrees using CFD
software, 5th National Congress on Civil Engineering, Ferdowsi University of Mashhad.
Karami H , Saneie M, Ardeshir A. 2006. Experimental Investigation of Time Effect on Local Scouring Around Groynes, 7th International
River Engineering Conference, Ahwaz, Iran.
Kuhnle RA, Alonso CV, Shields FD.1999. Geometry of scour holes associated with 90-degree spur dikes, Journal of Hydraulics
Engineering, Vol. 125(9), Sep, ASCE, pp. 972–978.
Mahmoudi Zanganeh A, Sanei M. 2007. The effect of the length and distance of spur dike on scour pattern, 6th Iranian Hydraulic
Conference, Shahrekord University.
Melville BW.1992. Local Scour at Bridge Abutments, Journal of Hydraulic Engineering, Vol. 118(4). April, ASCE, pp. 615–631.
Mesbahi J. 1992. On Combined Scour near Groynes in River Bends, M.Sc. Thesis, Netherlands, Delft University, Hydraulics Report, HH
132.