Browse > Article
http://dx.doi.org/10.14346/JKOSOS.2017.32.6.61

An Experimental Study on The Uncertainty of Suspended Sediment Pickup on Slope by Solitary Wave  

Cho, Jae Nam (Isan Corporation)
Jeong, Seok Il (Department of Civil Engineering, Hongik University)
Lee, Seung Oh (Department of Civil Engineering, Hongik University)
Publication Information
Journal of the Korean Society of Safety / v.32, no.6, 2017 , pp. 61-67 More about this Journal
Abstract
Suspended sediment transport plays principal roles in morphological process of natural coastals. It is needed to understand the reason why interaction characteristics of solitary wave and suspended sediment. The present study shows that suspended sediment pickup derived on solitary wave celerity. The 2D prismatic open channel length is 12 m, width is 0.8 m, height is 0.75 m and slope is 1/6. Generation of solitary wave is used by rapidly opening the sluice gate. Bottom surface sediments are laid movable slope section by 0.03 m thickness and experimental sediments are used anathracite and jumoonjin sand. Techniques of suspended sediment pickup rate are designed equipment ASC(Absorptive Suspended sediment Collector). It could directly absorb 5 points suspended sediment by channel water depth. Solitary wave celerity is measued by ADV(Acoustic Doppler Velocimeter). Mounted two video cameras(Model No. : Sony, HDR-XR550) are used to image processing of suspended sediment concentration and turbidity. Suspended sediment pikcup rate(Einstein, 1950) is analyzed to nondimensionalization based on solitary wave celerity. The suspended sediment pickup rate is suggested that more effective plunging breaking type than spilling. The results indicates fundamental suspended sediment transport mechanism between solitary wave celerity and suspended sediment pickup based on laboratory experiments. Finally, the present study suggests that suspended sediment pickup rate by solitary wave is used only characteristics of sediment and solitary wave celerity.
Keywords
solitary wave; sluice gate; suspended sediment; pickup;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 T. H. Ahn, G. Y. Park and Y. S. Cho, "Run-up Heihgts of Nearshore Tsunami based on Quadtree Grids" Journal of KWRA, Vol. 36, No. 4,pp. 693-701, 2003.
2 C. H. Jeon, B. H. Lee and Y. S. Cho, "Characteristics of Solitary Waves Acting on Slopes", Journal of KWRA, Vol. 36, No. 5. pp. 779-786, 2002.
3 G. Carrier and H. Greenspan, "Water Waves of Finite Amplitude on a Sloping Beach", Journal of Fluid Mechanics, pp. 97-109, 1958.
4 C. E. Synolakis, "The Run-up of Solitary Waves", Journal of Fluid Mechanics, pp. 523-545, 1987.
5 Y. F. Xiao, M. D. Anderson and J. M. Fraser, "Photoluminescence Saturation Independent of Excitation Pathway in Air-suspended Single-walled Carbon Nanotubes", Physical Review B 89.23, 2014.
6 Y. Li and R. Fredic, "Non-breaking and Breaking Solitary Wave Run-up", Journal of Fluid Mechanics, Vol. 456, 2002.
7 A. F. Mostafa, "Role of Wave Pressure in Bedload Sediment Transport", Journal of Waterway, Port, Coastal, Ocean Engineering, Vol. 129, No. 6, pp. 243-249, 2003.   DOI
8 H. Yeh, F. Kato and S. Sato, "Tsunami Scour Mechanisms Around a Cylinder", Tsunami Research at the End of a Critical Decade, pp. 33-46, 2001.
9 H. A. Einstein, "The Bed-Load 함수 for Sediment Transportation." Open Channel Flow Technical Bulletin No 1026, 1950.
10 T. Takahashi, N. Shuto, F. Imamura and D. Asai, "Modeling Sediment Transport due to Tsunamis with Exchange Rate between Bed Load Layer and Suspended Load Layer", Coastal Engineering 2000, pp. 1508-1519, 2001.
11 L. C. Van Rijn, "Sediment Transport, Part II: Suspend Load Transport", Hydr. Engrg., ASCE 1104.11, pp. 1613-1641, 1984.
12 L. C. Van Rijn, "Sedimentation of Dredged Channels by Currents and Waves", Journal of Waterway, Port, Coastal, and Ocean Engineering, Vol. 112, Issue 5, pp. 541-559, 1986.   DOI
13 G. H. Lee, C. H, Kim, S. H. Jeong and D. S. Kim, "Wave Control by Sumberged Breakwater under the Solitary Wave Action,. KSCE, Vol. 28, No. 3B, pp. 323-334, 2008.   DOI
14 Y. S. Cho, "Run-up and Evolution of Solitary Waves on Steep Slopes", Journal of KWRA, Vol. 28, No. 6, pp. 59-168, 1995.
15 C. U. Lee, " Stability and Sliding Motion of Armor Units on Slopes of Coastal Structures", Journal of KSCE, Vol. 20. No. 1B, pp. 59-71, 2000.
16 T. J. Ahn, Y. T. Kim, S. H. Park and Y. S. Cho, " Experimental Study on Run-up of S-berm-Typed Rubble Mound Breakwaters", Journal of Advanced Researchin Ocean Engineering, Vol. 18, No. 2, pp. 147-153, 2006.
17 C. H. Kim, H. W. Ji, J. H. Bae and G. Y. Park, "Study on Failure Mechanism of Composite Breakwater due to Tsunami(Solitary wave)", Conference of KSCE, pp. 365-366, 2014.
18 Y. S. Cho and B. H. Lee, "A Study of Maximum Run-up Heights of Periodic Waves", Journal of KWRA, Vol. 32, No. 6, pp. 649-655, 1999.