Model

Modeling the Evolution in the Concentration of Solids Based On Time of The Mewou River in the Mifi Basin (Published)

The objective of this study is to evaluate and model the evolution of the concentration of solids, as a function of the time of the Mewou river, in the Mifi watershed. We have determined from the samples taken from this watercourse and from the specialized laboratories the concentrations of soil exported. The MATLAB software allowed us to simulate the evolution of the concentration of solids, according to the time of this stream. This evolution is characterized by the polynomial model equation of degree nine with a correlation coefficient of 0.5702 and a coefficient of determination of 0.325: C_s = a* t ⁹ + b* t ⁸ + c* t ⁷ + d* t ⁶ + e* t ⁵ + f* t⁴ + g* t ³ + h* t ² + i* t + j

Keywords: Model, Solids Concentration, Time, function, simulate

Modeling the evolution of sediment discharge based on liquid flow rates of the Mewou river in the Mifi basin (Published)

The objective of this study is to evaluate and to model the evolution of sediment discharge depending on the liquid flow of the Mewou River in the catchment of the Mifi. The amount of exported soil was determined by oven drying of the    water samples collected from the Mewou River at 105 °C. The MATLAB software has enabled us to simulate the evolution of sediment discharge based on liquid flow rates. The evolution of sediment discharge based on liquid flow rates obtained in this study is characterized by the polynomial model of equation nine degrees a correlation coefficient of 0.9999 and a determining coefficient of 0.9998:

Q_s = a* Q_l ⁹ + b* Q_l ⁸ + c* Q_l ⁷ + d* Q_l ⁶ + e* Q_l ⁵ + f* Q_l ⁴ + g* Q_l ³ + h* Q_l ² + i* Q_l + j

This equation is more representative than the power model « Qs = a*Q_l^b »  which has a correlation coefficient of  0.9891 and a determining coefficient of 0.9783 or the power model « Qs = a*Q_l^b + b » which has a correlation coefficient of 0.9934 and a determining coefficient of 0.9868 developed by other authors.

Keywords: Model, Water discharge, function, sediment discharge, simulate