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ENCIT 2020
18th Brazilian Congress of Thermal Sciences and Engineering
EXPERIMENTAL DETERMINATION OF THE DISCHARGE COEFFICIENT OF A FLOODGATE AND THE SURFACE ROUGHNESS SCALE IN A PHYSICAL MODEL OF A SMALL HYDROELECTRIC POWER PLANT
Submission Author:
Hélio Augusto Goulart Diniz , MG , Brazil
Co-Authors:
Hélio Augusto Goulart Diniz, Lúcio Sant'Anna Purri Miranda, Gleberson Marques Humia, MATHEUS PHILIP MENEZES ROCHA, Henrique Mendes Sampaio, Zozimo Valdivino da Silva, Aloysio Portugal Maia Saliba, Edna Maria de Faria Viana
Presenter: Hélio Augusto Goulart Diniz
doi://10.26678/ABCM.ENCIT2020.CIT20-0228
Abstract
One of the ways to observe the physical phenomena that happen in a hydroelectric plant reservoir, such as sediment transportation, is the analysis of a reduced scale model, on which the variables are more easily controlled, being able to represent with assertiveness the real case. On the Hydraulic Research Centre (CPH) of the Federal University of Minas Gerais (UFMG) there is a physical model of the Small Hydroelectric Power Plant (SHPP) Salto do Paraopeba on the geometric scale of 1:40. The aim of this paper is to experimentally determine the discharge coefficient of the aforementioned SHPP and the surface roughness scale between the model and the protoype. Four equations found in the literature are used to determine the discharge coefficient and the geometrics, kinematics and dynamics similarities theory to determine the surface roughness scale. The results have shown good consonance with the estimated methods for the discharge coefficient. Furthermore, a scale of 2:3 for the Manning coeffient of the floodgate was reached.
Keywords
Hydroelectric plant, physical model, floodgate, Discharge Coefficient, surface roughness
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