Numerical hydrodynamic modeling of rain runoff parameters of Gelendzhik city

A numerical hydrodynamic model of the Gelendzhik city catchment is presented, including the entire territory of the city and the mountainous part of the southern slope of the Markkhot Ridge. The model takes into account all city blocks and streets, as well as the projected upland collector for diverting part of the mountain runoff bypassing the city, culverts on the M4 highway and the projected waterside collector. Variant calculations of intense rains of low probability with duration of 20 and 720 minutes were performed. The flow depths, velocities and dynamic head values were obtained on all city highways, the most dangerous sections were determined. It was concluded that in order to prevent catastrophic values of these parameters in most of the territory of the city of Gelendzhik, it is necessary to build the upland collector for rains with a probability of 5% or less, and the waterside collector for rains with a probability of 10% or less.

numerical modeling, adaptive hybrid grid, urban catchment, upland collector, pluviogramm of rain, dynamic head