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Silva, M., (2012). Estudio y modelamiento matemático de los procesos de sedimentación y purga de un reservorio [Tesis, Universidad Nacional de Ingeniería]. http://hdl.handle.net/20.500.14076/1131
Silva, M., Estudio y modelamiento matemático de los procesos de sedimentación y purga de un reservorio [Tesis]. : Universidad Nacional de Ingeniería; 2012. http://hdl.handle.net/20.500.14076/1131
@mastersthesis{renati/255331,
title = "Estudio y modelamiento matemático de los procesos de sedimentación y purga de un reservorio",
author = "Silva Dávila, Marisa Rosana",
publisher = "Universidad Nacional de Ingeniería",
year = "2012"
}
Title: Estudio y modelamiento matemático de los procesos de sedimentación y purga de un reservorio
Authors(s): Silva Dávila, Marisa Rosana
Advisor(s): Kuroiwa Zevallos, Julio Martín
Keywords: Reservorio; Procesos de sedimentación; MacCormack
Issue Date: 2012
Institution: Universidad Nacional de Ingeniería
Abstract: Esta investigación está orientada a lograr que el volumen útil de los reservorios no disminuya significativamente a lo largo del tiempo mediante operaciones de compuertas que permitan usar las crecientes para retirar del embalse parte de los sedimentos aportados. Para ello, se investiga los procesos de sedimentación y purga de sedimentos de los embalses y se estudia su representación mediante modelos físicos y matemáticos. Se desarrolló un modelo matemático bidimensional impermanente usando un algoritmo no acoplado que incluye el esquema explícito de MacCormack para resolver las ecuaciones hidrodinámicas y la ecuación de transporte de fondo de Aguirre – Pe.
Como aplicación se estudió el pulmón de regulación diaria de la Central Hidroeléctrica Chimay, ubicada en Junín y que cuenta con un volumen útil de 1,5 hm3. Se consideraron las características morfológicas y sedimentológicas del vaso; las características hidráulicas de la presa y elementos de purga y las condiciones de operación del reservorio. Se analizaron los resultados obtenidos de un modelo físico de fondo móvil de este embalse realizado en el Laboratorio Nacional de Hidráulica en escala 1:40 para estudiar la purga de sedimentos. Se demostró que es posible lograr la evacuación efectiva de los sedimentos depositados cerca de la presa mediante reglas de operación de las compuertas de fondo. Además, que para lograr arrastrar los sedimentos desde la cola del embalse hasta la salida es necesario realizar purgas intermitentes con desembalse total.
Las conclusiones de esta investigación incluyen consideraciones de la representatividad de los modelos físicos y matemáticos y el listado de sus factores limitantes así como la formulación de las reglas de operación encaminadas a la conservación del volumen útil de un modo compatible con las necesidades de generación de energía eléctrica.
This research aims to ensure the useful volume of the reservoirs does not decrease significantly over time by using sluice-gate operations that allow the flooding to remove part of the sediments deposited by the river. For this, the reservoir processes of sedimentation and sediment purge and their representation were studied by physical and mathematical models. A two-dimensional impermanent mathematical model was developed using an uncoupled algorithm that includes the MacCormack explicit scheme and the method proposed by Aguirre – Pe to calculate bed load transport rate. As an application, the daily regulation reservoir of the Hydroelectric Power Chimay, located in Junín, with a usable storage volume of 1,5 hm3 was studied. The bed morphological and sediment characteristics, the dam hydraulic characteristics and purge elements and, the reservoir operating conditions were considered. The results of a physical model of mobile bed of this reservoir made in a 1:40 scale at the Laboratorio Nacional de Hidraulica to study the hydraulic flushing for reservoir desiltation were analyzed. This study proved that by using operating rules of the sluice-gates is possible to achieve the effective evacuation of sediments deposited near the dam. In addition, intermittent hydraulic flushing operations with total discharge are needed to ensure that sediments are dragged from the reservoir tail to the outlet. The conclusions of this research include considerations of the representativeness of physical and mathematical models and the listing of its limiting factors as well as the formulation of the operating rules for the conservation of useful volume in a manner consistent with the needs of power generation.
This research aims to ensure the useful volume of the reservoirs does not decrease significantly over time by using sluice-gate operations that allow the flooding to remove part of the sediments deposited by the river. For this, the reservoir processes of sedimentation and sediment purge and their representation were studied by physical and mathematical models. A two-dimensional impermanent mathematical model was developed using an uncoupled algorithm that includes the MacCormack explicit scheme and the method proposed by Aguirre – Pe to calculate bed load transport rate. As an application, the daily regulation reservoir of the Hydroelectric Power Chimay, located in Junín, with a usable storage volume of 1,5 hm3 was studied. The bed morphological and sediment characteristics, the dam hydraulic characteristics and purge elements and, the reservoir operating conditions were considered. The results of a physical model of mobile bed of this reservoir made in a 1:40 scale at the Laboratorio Nacional de Hidraulica to study the hydraulic flushing for reservoir desiltation were analyzed. This study proved that by using operating rules of the sluice-gates is possible to achieve the effective evacuation of sediments deposited near the dam. In addition, intermittent hydraulic flushing operations with total discharge are needed to ensure that sediments are dragged from the reservoir tail to the outlet. The conclusions of this research include considerations of the representativeness of physical and mathematical models and the listing of its limiting factors as well as the formulation of the operating rules for the conservation of useful volume in a manner consistent with the needs of power generation.
Link to repository: http://hdl.handle.net/20.500.14076/1131
Discipline: Maestría en Ciencias con Mención en Ingeniería Hidráulica
Grade or title grantor: Universidad Nacional de Ingeniería. Facultad de Ingeniería Civil. Unidad de Posgrado
Grade or title: Maestro en Ciencias con Mención en Ingeniería Hidráulica
Register date: 4-Jun-2015
This item is licensed under a Creative Commons License