Ingeniería del Agua - Vol 20, No 2 (2016)

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Artículos

  • Una nueva aproximación para la evaluación del golpe de ariete incluyendo la condición inicial de presurización de la instalación y del fluido
  • Previsão consumo diário de água: um estudo de caso de Nobres (Brasil)
  • Estimación de algunas propiedades geohidrológicas en un conjunto de pozos de monitoreo en el Valle de Mexicali, B.C., México.
  • Sistema de detección de fugas en tiempo real en presas de materiales sueltos mediante sensores distribuidos en fibra óptica

URI permanente para esta colecciónhttps://riunet.upv.es/handle/10251/77104

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  • Miniatura
    Item type: Artículo , Access status: Abierto ,
    Sistema de detección de fugas en tiempo real en presas de materiales sueltos mediante sensores distribuidos en fibra óptica
    (Universitat Politècnica de València, 2016-04-29) Muñoz, O.; Gómez, R.; Russo, B.; Sánchez, J.C.
    [EN] The present paper examines the use of optic fiber as a distributed temperature sensor to leakage detection on earth dams. This technique allows complement the current auscultation systems improving the way of monitoring of this kind of critical infrastructures. This type of real time monitoring system has been implemented on two real cases (Soto-Terroba and Yesa earth dams). The aim of this work is to provide a practical vision about this novel and promising technique, and particularly on the criteria to select the adequate materials and the precautions to be taken into account in order to deploy correctly the sensor element.
  • Miniatura
    Item type: Artículo , Access status: Abierto ,
    Previsão consumo diário de água: um estudo de caso de Nobres (Brasil)
    (Universitat Politècnica de València, 2016-04-29) Silva, W. T. P.; Campos, M. M.; Santos, A. A.
    [EN] In order to move operational efficiency from the water system supply (Waterworks, i.e. a combined water purification plant and pumping station) forecast water consumption values 24 h ahead are required. The objective of this paper is to develop mathematical model forecast water consumption 24 h ahead for Nobres city, Mato Grosso State, in Brazil. The methodology developed comprises the following steps: (1) literature review; (2) gathering and data analysis (water consumption and climatic); (3) proposal of a model forecast water consumption; (4) calibration and verification of the proposed model; and, (5) application of model. The mathematical modelling techniques employed were Linear Regression, Fourier Series and Expert System. The results indicated that there is error average percentage of less than 10% of model indicating that provided a good fit and can be used to predict water consumption. It can be concluded that the model development which may be used for operational planning the Waterworks study.
  • Miniatura
    Item type: Artículo , Access status: Abierto ,
    Una nueva aproximación para la evaluación del golpe de ariete incluyendo la condición inicial de presurización de la instalación y del fluido
    (Universitat Politècnica de València, 2016-04-29) Kaless, G.
    [EN] The water hammer phenomenon is well known since the 19th century, while its mathematical formulation, by means of differential equations, is due to works of researchers such us Allievi (1903) and others from the beginning of the 20th century. The equations found in the technical publications produce a strange water hammer when the initial condition is defined assuming an incompressible fluid and a rigid pipe. The correct solution requires solving the water hammer equations for the initial state. When the finite difference method is applied, the initial state is solved by means of a set of non-linear equations. A novel approach is proposed including the initial state of pressurization into the governing equations and hence simplifying the calculus of the initial conditions. Furthermore, a critical reading of the deduction of the equations is done pointing out conceptual inconsistencies and proposing corrections
  • Miniatura
    Item type: Artículo , Access status: Abierto ,
    Estimación de algunas propiedades geohidrológicas en un conjunto de pozos de monitoreo en el Valle de Mexicali, B.C., México
    (Universitat Politècnica de València, 2016-04-29) Fuentes-Arreazola, Mario Alberto; Vázquez-González, R.; Consejo Nacional de Ciencia y Tecnología, México
    [EN] With the aim of studying the response of the water level related to variations in barometric pressure and the action of theoretical Earth tide, in a set of monitoring wells in the Mexicali Valley; are propose and implement analysis techniques in the time and frequency domain to obtain as result from the calculation of transfer functions and harmonic analysis, values of barometric efficiency and sensitivity to Earth tide, with which under conditions of theoretical static-confined response, was possible to obtain estimates of some geohydrological and geophysical properties as: porosity, specific storage, and compressibility. In five wells considered in this paper were obtained estimates of the properties of the aquifer in a state before and after an earthquake. This work has enabled a better understanding of the parameters that control the processes that occur in the study area