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.
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