Paul Uwe Thamsen
Czasopismo Techniczne, Środowisko 1-Ś (11) 2016, 2016, s. 17 - 28
https://doi.org/10.4467/2353737XCT.16.192.5941This paper concerns the application of the Smoothed Particle Hydrodynamics (SPH) method for sewer hydraulics with a focus on free-surface flows and sediment flushing. SPH is the most popular mesh-free method and has been widely used in the field of fluid mechanics. Here, the previous studies in the last few years are summarized, which have investigated the application of the relatively new model for the simulation of solid transport, free-surface and multiphase flows.
Paul Uwe Thamsen
Czasopismo Techniczne, Volume 2 Year 2017 (114), 2017, s. 133 - 142
https://doi.org/10.4467/2353737XCT.17.023.6216
This paper presents a design for a decentralised intelligent network of five wet pit pumping stations in a rural area. This enables the network to automatically respond to inflow conditions divergent to the base flow and use the storage capacity of the system to prevent sewer overflows. First results for the base flow and a simulation of the network in EPANET are presented.
Paul Uwe Thamsen
Czasopismo Techniczne, Volume 1 Year 2017 (114), 2017, s. 125 - 135
https://doi.org/10.4467/2353737XCT.17.010.6107This paper summarizes the problems caused for wastewater systems by changing wastewater composition, especially the increasing use of nonwoven wet wipes and their disposal via the toilet. The nonwoven wet wipes do not disintegrate in the sewer system as paper-based toilet does, but accumulate to large agglomerations that can block the system and clog pumps. This not only reduces the operational safety and stability of the wastewater system, but also costs the operator a lot of money. The paper introduces an approach to estimate the composition of wastewater and presents first results for the city of Berlin.