Analytical Determination of Regulating Volume of the Multi-section Stormwater Detention Tanks Depending on the Constructive Parameters

Managing stormwater allows for much more efficient use of water resources, improves operational performance indicators of wastewater systems, and normalizes the hydrological regime of the river into which treated wastewater is discharged. One of the structures that allows for effective regulation of peak loads on the system and partially or completely purifies surface runoff is a stormwater tank. The work describes the mathematical modelling of the filling and emptying processes of the multi-section stormwater detention tanks (SWDT). Dimensionless regulating volume coefficient Kreg and several the constructive parameters: the coefficient of area ratio k, the dimensionless diameter of the outlet pipe Dc′, the dimensionless filling of the SWDT h′, initial regulation coefficient αс,о. The results of the computer program for determining of the regulating volume coefficient Kreg depending on dimensionless coefficients are presented. The obtained results of numerical experiments were approximated by a linear dependence with a high degree of correlation.