The Influence of Vertical Velocity Distribution on the Calculation of Suspended Sediment Concentration

Figure 4

Verification of sediment concentration with different vertical time-averaged velocities. Among them, (a) the verification of sediment concentration with Rouse’s assuming zero value, (b) the verification of sediment concentration with Velikanov’s gravity theory hypothesis, (c) the verification of sediment concentration with Zhang’s viscous hypothesis, and (d) the verification of sediment concentration with Cao’s turbulence hypothesis. In all figures, the black solid line is a 45° diagonal line, and the blue-dotted line is the linear fitting center line of scattered points. The smaller the angle between the two lines, the higher the calculation accuracy; the width of the strip area with scattered points indicates the concentration of calculation accuracy. The smaller the width, the better the concentration.

(a)

(b)

(c)

(d)