Banca de DEFESA: GEAN CARLOS PEREIRA DE LUCENA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : GEAN CARLOS PEREIRA DE LUCENA
DATE: 19/12/2024
TIME: 09:00
LOCAL: meet.google.com/msi-wxec-xsv
TITLE:

Concentrated flow hydraulics and resistance parameters from rill erosion under agricultural use

KEY WORDS:

Rill erodibility, critical shear stress, hydraulic channels, agricultural use.

PAGES: 52
BIG AREA: Engenharias
AREA: Engenharia Sanitária
SUMMARY:

The physical processes of soil erosion understanding are essential to control its occurrence. Therefore, rill erosion has been recognized as an environmental issue due to anthropic use that can decrease soil health. Therefore, were pre-formed rills erosion in an Ultisol under Sugar Cane use, in which increasing flow levels from 20, 40, 60, and 75 L.min^-1, objecting the flow hydraulics and the resistance parameters of critical shear stress (τ_cr) and rill erodibility (K_r). The applied flow produced turbulent and subcritical flows featuring a hydrodynamic condition common in rill erosion. The increasing flow levels applied generated increasing radius hydraulics responsible for detachment rates in rills to 8.75 Pa of critical shear stress (τ_cr) and 0.0007 kg m^-2 s^-1 for rill erodibility (K_r) from this Ultisol.

COMMITTEE MEMBERS:
Presidente - JOSE RAMON BARROS CANTALICE
Externo à Instituição - SANDRO AUGUSTO BEZERRA
Interno - VICTOR CASIMIRO PISCOYA