Critical state of sediment saturation of a flow in open channels

Conclusions

• 1. It was proved that the coefficient in front of the existing formulas for determing the critical sediment concentration of flows are not constant, and their values depend on the sediment concentration of the flow$\left( {\rho _0 } \right)$ in accordance with dependence (12).

• 2. A new dependence (13) for calculating the critical sediment concentration of a flow was obtained on the basis of processing numerous existing on-site investigations.

• 3. The regime of motion of suspended fine sediments (d≤0.25 mm) in tranquil open-channel flows occurs according to dependence (13).

• 4. Formula (13) can be recommended for practical use when calculating the critical sediment concentration in canals, settling basins, and other streams transporting fine natural suspended material.