Banca de QUALIFICAÇÃO: KESLEY ANTONIO SANTOS

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : KESLEY ANTONIO SANTOS
DATE: 10/12/2020
TIME: 09:00
LOCAL: REMOTO VIA RNP
TITLE:

COMPUTATIONAL FLUID DYNAMICS COUPLED WITH DISCRETE ELEMENT METHOD APPLIED IN SUBSURFACE HORIZONTAL WETLANDS: AN APPROACH TO GEOMETRIC AND OPERATIONAL OPTIMIZATION

KEY WORDS:

Constructed wetlands; Computational Fluid Dynamics (CFD); Discrete Element Method (DEM); Computational Modelling; Clogging

PAGES: 85
BIG AREA: Engenharias
AREA: Engenharia Civil
SUMMARY:

Constructed Wetland (CW) is a ecotechnology for decentralized sewage treatment that simulates the physical, chemical and biological mechanisms of the natural wetlands. It is an alternative to rural sanitation, which is in a precarious situation. However, the operational and internal dynamics of WCs is unclear, leading to a inaccurate design and operation criteria. Computational fluid dynamics (CFD) is a tool that can help to unravel the processes involved inside the system, such as clogging. However, CFD has difficulties in modeling the granular material due to the application of simplified methods, such as the Darcy-Forchheimer equation. The discrete element method (DEM) allows to simulate the behavior of granular materials and an interaction between particles, coming up as a sophisticated approach to modeling the porous medium. In this context, the present study pretend to develop a coupled CFD-DEM model for CWs that serves as a support tool for the optimization of geometric and operational configurations and that includes important processes, such as clogging. The proposal is to investigate the influence of the following aspects on the hydrodynamics in CWs: the ratio aspect, depth, the inlet-outlet configurations, the filtering material, the influence of the plants in the system, the hydraulic application rate and the fed regime (continuous or batch). At the end, it is expected to identify the hydraulic behavior of the WC in a more appropriate way if compared to the homogeneous porous medium model.

BANKING MEMBERS:
Presidente - LINEKER MAX GOULART COELHO
Interno - ROGERIO CABRAL DE AZEVEDO
Interna - HERSILIA DE ANDRADE E SANTOS
Externa à Instituição - DANIELA GUZZON SANAGIOTTO - UFRGS
Externa à Instituição - KARINA QUERNE DE CARVALHO PASSIG - UTFPR