Abstract
The Brazilian hydrological information network does not provide data series of daily velocities. The river velocities are important for the study of hydrokinetic potential. Therefore, the work proposes a model called flow-velocity that estimates the average daily velocity and the distribution of the velocity profile of the cross section of rivers. The model was applied to the Amazon basin, using the highest and lowest flow rates of the historical series. The highest and lowest average velocities found in the Amazon River were 2.27 m s-1 and 0.735 m s-1, respectively. The main contributors to the Amazon River presented average daily velocities close to 2.0 ms-1 for the flood period, but in the dry season these velocities did not exceed 0.5 m s-1. Thus, it was verified that the Amazon River has hydrokinetic potential throughout the year and its tributaries during the flood period.
Highlights
The society searches for renewable and sustainable energy sources to meet growing demands, hydrokinetic plants have received attention in the same proportion (Petrie, Diplas, Gutierrez, & Nan, 2014)
It was verified that the Amazon River has hydrokinetic potential throughout the year and its tributaries during the flood period
Due to the importance of knowing the velocity values in rivers for many studies of water resources and hydraulic projects, especially those of hydrokinetic energy generation, the objective of the study is to develop a methodology for the design of a flow-velocity model for estimates of average daily velocity in river cross sections from flowrate data for analyse the hydrokinetic potential
Summary
The society searches for renewable and sustainable energy sources to meet growing demands, hydrokinetic plants have received attention in the same proportion (Petrie, Diplas, Gutierrez, & Nan, 2014). Studies have verified the use of the remaining energy from hydroelectric plants In this sense, Holanda et al (2017) presented in their work a shallow water model to verify the hydrokinetic energy use downstream of the Tucuruí hydroelectric power plant in the State of Pará, Brazilian Amazonia, since it has the largest installed capacity in the national territory; and during its implantation caused a great environmental impact. According to these authors, the implantation of a hydrokinetic energy park, in the evaluated section, could generate 2.04 GWh / year, which is a considerable value for an unused energy resource
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