Experimental Study on the Fluid Mud Transportation Under Currents with Fluctuating Water Surface
Chunrong Liu*,†, Wenyu Yang*, Bo Wu*, and Huhe Aode**
*School of Civil Engineering and architecture, Xiamen University of Technology
Xiamen, Fujian 361024, China
**Institute of Mechanics, Chinese Academy of Sciences, Beijing, China
A series of experiments conducted to study fluid mud movement in currents with a fluctuating water surface involved measuring fluid mud yield stress, bed shear stress, and water surface fluctuation. To observe fluid mud movement, we dyed a sheet of fluid mud in the water flume cross-section red. We then calculated the fluid mud transportation velocity based on mud sheet displacement over time. Experiments showed that water surface fluctuation plays an important role in fluid mud movement. Under conditions of water surface fluctuation, we were able to observe fluid mud oscillation in the case that the interface of the water and fluid mud is clear. After several oscillation cycles, fluid mud is transported downstream by water currents.
-  T. Tomita, T. Arikawa, and T. Asai, “Damage in Ports due the 2011 off the Pacific Coast of Tohoku Earthquake Tsunami,” J. of Disater Research, Vol.8, No.4, pp. 594-604, 2013.
-  J.F Li, X.N. Wan, Q. He, M. Ying, and L.Q. Shi, “Hutchinson S.M. In-Situ observation of fluid mud in the north passage of Yangtze Estuary,” China. China Ocean Engineering, Vol.18, No.1, pp. 149-156, 2004.
-  L.C. Sun, “Research on hydrological and siltation problems of Tianjin port,” The Ocean Engineering, Vol.21, No.1, pp. 78-86, 2003 (in Chinese).
-  X. Zhou and J. Wang, “The wave attenuation on mud bed,” The Ocean Engineering, Vol.12, No.3, pp. 54-64, 1994 (in Chinese).
-  Z.D. Zhao, “Review and prospects on the interaction between waves and mud bottom,” The Ocean Engineering, Vol.9, No.2, pp. 33-40, 1991 (in Chinese).
-  Z.D. Cao, “Characteristics of fluid mud motion under waves,” Waterway ports, No.2, pp. 8-14, 1987.
-  Q. Chen, “A study on fluid mud flow under the action of gravity and effect of flowing water and interfacial stability,” J. of Tianjin University, No.24, pp. 31-52, 1965 (in Chinese).
-  Z.D. Zhao, “The fluid mud transport under wave,” Marine Science Bulletin, pp. 65-74, 1982.
-  Z.D. Cao, “Research of fluid mud characteristics,” Waterway ports, No.1, pp. 34-40, 1992.
-  H.G. Gade, “Effect of a non-grid, impermeable bottom on plane surface waves in shallow water,” J. Mar. Res., No.16, pp. 61-82, 1958.
-  R. A. Dalrymple, “Waves over soft muds: a two-layer fluid mud,” American Meteorological society, pp. 1121-1131, 1978.
-  C.C. Mei and K.F. Liu, “A binghan-plastic model for a muddy seabed under long waves,” J. of Geophysical Reseach, Vol.92, No.13, pp. 14581-14594, 1987.
-  G.R. Dou, “Incipient motion of coarse and fine sediment,” J. Of Sediment Research, No.6, pp. 1-13, 1999.
-  T. V. Kessel and C. Kranenbug, “Gravity current of fluid mud on sloping bed,” J. of Hydraulic Engineering, Vol.122, No.12, pp. 710-717, 1996.
-  R. Hong and Y.l. Ying, “Research of fluid mud staring velocity under current,” J. of Hydraulic, Vol.8, No.8, pp. 49-55, 1988.
-  C. Tang, “Research of sediment incipient motion,” J. of Hydraulic, No.2, pp. 1-12, 1963.
-  C. Balmforth, “A consistent thin-layer theory for Bingham plastics,” J. of Non-Newtonian Fluid Mechanics, No.84, pp. 65-81, 1999.
-  M.R. Chowdhury and F.Y. Testilk, “aboratory testing of mathematical models for high-concentration fluid mud turbidity currents,” Ocean Engineering, No.38, pp. 256-270, 2011.
-  Z.D. Zhao and L. Jiang, “Study on the interaction between waves and mud bottom,” The Ocean Engineering, No.3, pp. 321-328, 1989.
-  J. M. Becker, “Pattern formation on the interface of two-layer fluid: bi-viscous lower layer,” Wave Motion, No.34, pp. 431-452, 2001.
-  C.O. Ng and S-C. Fu, “On the propagation of two-dimensional viscous density current under surface waves,” Physics of fluid, Vol.14, No.3, pp. 970-984, 2002.
-  C.O. Ng, “Mass Transport in A Layer of Power-law Fluid Forced by Periodic Surface Pressure,” Wave Motion, Vol.39, pp. 241-259, 2004.
-  P. Traykovski and W. R. Geyer, “The role of wave-induced density-driven fluid mud flows for cross-shelf transport on the Eelriver continental shelf,” Continental Shelf Research, No.20, pp. 113-2140, 2000.
-  P. Puig and A. S. Ogston, “Shelf-to-canyon sediment-transport processes on the Eel continental margin (northern California),” Marine Geology, No.193, pp. 129-149, 2003.
-  Z.D Zhao and J.J. Lian, “Interaction among waves, current, and mud: numerical and laboratory studies,” Advances in Water Resources, No.29, pp. 1731-1744, 2006.
-  A. Huhe and Z.H. Huang, “Experimental study of rheology of Hangzhou Bay mud. Int. report IMCAS STR-94021,” Institute of Mechanics, Chinese Academy of Sciences, 1994 (in Chinese).
-  Z.H. Huang and A. Huhe, “A laboratory study of rheological properties of mudflows in Hangzhou Bay, China,” Int. J. of Sediment Research, Vol.24, pp. 409-423, 2009.
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