Manning’s roughness coefficient for the Doce River
ABSTRACT The Manning’s roughness coefficient is used for various hydraulic modeling. However, the decision on what value to adopt is a complex task, especially when dealing with natural water courses due to the various factors that affect this coefficient. For this reason, most of the studies carried out on the subject adopt a local approach, such as this proposal for the Doce River. Due to the regional importance of this river in Brazil, the objective of this article was to estimate the roughness coefficient of Manning along the river, in order to aid in hydraulic simulations, as well as to discuss the uncertainties and variations associated with this value. For this purpose, information on flow rates and water depths were collected at river flow stations along the river. With this information, the coefficients were calculated using the Manning equation, using the software Canal, and their space-time variations were observed. In addition, it was observed that the uncertainties in flow and depth measurements affect the value of the Manning coefficient in the case studied.
Main Authors: | Teixeira,Emmanuel Kennedy da Costa, Coelho,Márcia Maria Lara Pinto, Pinto,Eber José de Andrade, Diniz,Jéssica Guimarães, Saliba,Aloysio Portugal Maia |
---|---|
Format: | Digital revista |
Language: | English |
Published: |
Associação Brasileira de Recursos Hídricos
2018
|
Online Access: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2318-03312018000100245 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Similar Items
-
Methodology for physical modeling of reservoir sedimentation
by: Teixeira,Emmanuel Kennedy da Costa, et al.
Published: (2020) -
DAILY RAINFALL DISAGGREGATION COEFFICIENTS FOR THE DOCE RIVER BASIN, BRAZIL: REGIONAL APPLICABILITY AND THE RETURN PERIOD INFLUENCE
by: Passos,Jéssica B. de M. C., et al.
Published: (2021) -
Stochastic simulation in reservoir sedimentation estimation: application in a PCH
by: TEIXEIRA,EMMANUEL K.C., et al.
Published: (2022) -
Effect of surface roughness and lubrication on the friction coefficient in deep drawing processes of aluminum alloy aa1100 with fem analysis
by: Folle,Luis Fernando, et al.
Published: (2019) -
Calibration of Manning’s roughness in non-instrumented rural basins using a distributed hydrological model
by: Caro-Camargo,Carlos Andrés, et al.
Published: (2019)