Banca de DEFESA: ANDREW DE ALBUQUERQUE DA ROSA TEIXEIRA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : ANDREW DE ALBUQUERQUE DA ROSA TEIXEIRA
DATE: 25/07/2022
TIME: 17:00
LOCAL: Pos Graduação Engenharia Civil
TITLE:

 Improvement And Application of the Rain-Flow Model for Perennial River Regions: Velhas and Parnaíba Basins

KEY WORDS:

CAWM V. MGB-IPH. GR4J. Hydrological Modeling. Lumped Hydrological Model. Velhas river basin. Parnaiba river basin

PAGES: 122
BIG AREA: Engenharias
AREA: Engenharia Civil
SUMMARY:

Hydrological modeling is an important tool for supporting and managing water resources, as it facilitates the understanding of the physical processes that occur within a watershed. Even with the advances made in recent years, modeling is still a complex task. The rainfall-runoff hydrological model developed at the Federal University of Pernambuco called CAWM (Campus Agreste Watershed Model) has as one of its premises the simplicity and the few parameters to calibrate. In this work, the CAWM V version was applied, developed to be applied to hydrographic basins in sub-humid and humid climates, in regions with deeper soils that allow the maintenance of base flows during dry periods. Another focus was the application to large basins. Two large Brazilian hydrographic watersheds were simulated, the first being the Velhas river basin, whose main river is the largest tributary in extension of the São Francisco River, with 782 km in length and covering an area of 27862 km², and the second one being the Parnaiba River basin, whose area is 331,441.00 km² with the main river extending 1,467 km. When the watershed concentration time is longer than the simulation time step, in the case of one day, which occurs in the two watersheds under study, it is necessary to consider in the CAWM the delay between the occurrence of rain and its effect on the runoff until the outlet. One of the ways is to pre-distribute the rain in time before performing the simulations. Two procedures can be used in the adopted model: the first distributes the rainfall from the tracing of isochronous lines (lines that contain points whose travel time to the control section is equal) and the second uses the formulation of the synthetic time x area histogram Clark method to redistribute the mean flow of the basin over time. In order to improve the CAWM rainfall-runoff model and for performance comparison purposes, the French model GR4J and the large basin model MGB-IPH were applied to the Velhas river basin. The results obtained show that the CAWM V presented general results between good and very good according to the graphical analysis and the efficiency indicators used.

BANKING MEMBERS:
Presidente - 1688881 - ALFREDO RIBEIRO NETO
Externo à Instituição - CARLOS DE OLIVEIRA GALVÃO - UFCG
Interna - 1133540 - SUZANA MARIA GICO LIMA MONTENEGRO