ABSTRACT
The measured data in laminar flows conformed to the equation but the measured b in turbulent flows was smaller because of reduction in yield stress owing to turbulence. A hyperconcentrated flow is non-Newtonian if the sediment consists of a certain amount of clay particles. The amount of sediment transported by the flow depends only on the incoming sediment amount and boundary resistance. Dynamic characteristics of the flow depends on the rheological properties of the mixture, which in turn depend on the content of clay and silt, and cohesionless coarse particles have little influence on the flow. The phenomenon of stagnant layer and the chair form velocity profile can be interpreted with the change in the yield stress due to rheopexy. A hyperconcentrated pseudo-one-phase flow also transforms into turbulent flow if Reynolds number is large. For fully-developed turbulent hyperconcentrated flow in pipes or closed channels, the velocity profile also follows the logarithmic formula.
