Multiphase CFD-Simulation of Transport Phenomena in Sewer Systems

Teuber, Katharina; Broecker, Tabea; Jaydev, Shibashish D.; Goitom, Gebregziabher M.; Sielaff, Maria; Despot, Daneish; Stephan, Dietmar; Barjenbruch, Matthias; Hinkelmann, Reinhard

doi:10.1007/978-3-319-99867-1_146

Cited by 1 publication

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“…It should be noticed that the majority of modern works on the study hydrodynamic and mass transfer processes use the method of mathematical modeling in finite element analysis programs [29][30][31]. No exception and modeling of the processes of emission, transfer, distribution and influence of H2S [24,32,33]. Creation of models for our study was also carried out in the finite element analysis package ANSYS CFX.…”

Section: Methodsmentioning

confidence: 99%

Prediction of hydrogen sulfide emission from an energy dissipation chamber and assessment of its distribution in the ambient air

et al. 2019

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Wastewater transport in sewer networks contributes to the formation and emission of fetid and toxic sewage gases into the environment, one of which is hydrogen sulfide. The emission of gases can have a significant impact on the environment and health of maintenance workers and city residents. The object of the research is the study of the process of hydrogen sulfide emission in the energy dissipation chamber (EDC). The method of two-stage mathematical modeling in the program of finite element analysis ANSYS CFX is applied for the research. Two models have been created, the first one simulates the internal space of the EDC structure itself, and the second one simulates the EDC manhole and the volume of the surrounding air next to it. Mathematical dependences of hydrogen sulfide concentration change at three sections inside the structure are obtained for incoming wastewater flow velocities V = 1 m/s, 1.5 m/s and 2 m/s. The critical flow velocities at which the maximum single threshold limit value will exceed 1 m/s and the threshold limit value of the working area will exceed 1.52 m/s are determined. The methodology for solving the problem of assessing the impact of the EDC object on the environment is formed. The results of the study can be applied in the design of structures for a preliminary assessment and prediction of the impact of a wastewater facility, as well as the selection of the most favorable hydraulic regime.

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