RT Journal Article ID 15c041293fe6da99 A1 Stepova , N. A1 Kalugin, Yu. I. T1 Mathematical Modeling of a Secondary Clarifier with Cone-Shaped Bottom JF International Journal of Fluid Mechanics Research JO FMR YR 2011 FD 2011-11-03 VO 38 IS 5 SP 458 OP 478 AB A 1D mathematical model for a secondary clarifier with cone-shaped bottom and its numerical solution via the Cauchy−Euler method are presented in the paper. The model includes, among other parameters, the relationship between the velocity of hydraulic flux and clarifier cross-sectional area. A computer code to calculate suspended solids profiles in the clarifier in different time moments is developed along with a computer code for the visualization of obtained data. Some examples to illustrate the model possibilities are presented. The state of the art of secondary clarifier modeling is given in the paper. Different expressions to estimate the activated sludge settling velocity are studied, for settling velocity is an integral part of every clarifier model. PB Begell House LK https://www.dl.begellhouse.com/journals/71cb29ca5b40f8f8,3b02a11311f01f8d,15c041293fe6da99.html