高濃度流れに関する研究(2)-流動機構-

Abstract

In the last report, the universal form of the bulk equation of hyperconcentrated flow ofsediment is presented, and the apparent viscosity in the equation and terminal velocity areestimated taking electro-chemical interactions between fine grains and fluid into account.In this study, to make clear the mechanism of open channel flow of hyperconcentration, rheological characteristics are, at first, explained by reconsidering the model of electro-chemicaleffects. Nextly, Experimental study on open channel flow of hyperconcentration is done.As conclusion, they are clear that1) rheological characteristics are extimated almost uniquely by introducing parameters Qi/rd3and KQ2) for open channel flow, buffa layer of hyperconcentrated flow is larger than that of clearwater, and then friction factor is smaller than the case of clear water.