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Browsing by UPV Unit "Universitat Politècnica de València. Departamento de Ingeniería Hidráulica y Medio Ambiente - Departament d'Enginyeria Hidràulica i Medi Ambient"

Now showing items 1-20 of 3287

"Ecualizador": un método integral para la decisión con múltiples objetivos

Jaramillo Álvarez, Patricia; Andreu Álvarez, Joaquín; Smith Quintero, Ricardo (Universitat Politècnica de València, 2002-06-30)

[ES] Se presenta un sistema soporte para la toma de decisión multiobjetivo en un espacio continuo, en el que se integraron métodos clásicos y una metodología que se ha denominado "ecualizador" por las facultades regularizadoras ...
2D CFD modeling of rapid water filling with air valves usign OpenFOAM

Aguirre-Mendoza, Andrés M.; Oyuela, Sebastián; Espinoza-Román, Héctor G.; Coronado-Hernández, Oscar E.; Fuertes-Miquel, Vicente S.; Paternina-Verona, Duban A. (MDPI AG, 2021-11)

[EN] The rapid filling process in pressurized pipelines has been extensively studied using mathematical models. On the other hand, the application of computational fluid dynamics models has emerged during the last decade, ...
3D model evolution of a leak based on GPR image interpretations

Ocana-Levario, S.J.; Ayala Cabrera, David; Izquierdo Sebastián, Joaquín; Pérez García, Rafael (IWA Publishing, 2015-12)

This paper presents some aspects of the time propagation of underground water leakage in controlled laboratory conditions using a drilled polyvinyl chloride (PVC) pipe and interpreting ground penetrating radar (GPR) images. ...
3D Representation of (Buried) Water Supply Elements using Pre-Processed GPR Images

Ayala Cabrera, David; Ocaña Levario, Silvia Janeth; Izquierdo Sebastián, Joaquín; Pérez García, Rafael (2015)

[EN] In this paper, a ground penetrating radar (GPR) is used as a non-destructive method to assess the buried elements of water supply systems (WSSs). The aim is the detection of various pipe materials (such as plastic ...
A Bayesian Networks approach for the assessment of climate change impacts on nutrients loading

Sperotto, A.; Molina, J.L.; Torresan, S.; Critto, A.; Pulido-Velazquez, M.; Marcomini, A. (Elsevier, 2019-11)

[EN] Climate change is likely to strongly affect both the qualitative and quantitative characteristics of water resources. However, while potential impacts of climate change on water availability have been widely studied ...
A Case Study of a Large Unstable Mass Stabilization: "El Portalet" Pass at the Central Spanish Pyrenees

Cobos Campos, Guillermo; Eguibar Galán, Miguel Ángel; Torrijo, F.J.; Garzón-Roca, Julio (MDPI AG, 2021-08)

[EN] This case study presents the engineering approach conducted for stabilizing a landslide that occurred at "El Portalet" Pass in the Central Spanish Pyrenees activated due to the construction of a parking lot. Unlike ...
A combined risk analysis approach for complex dam-levee systems

Castillo-Rodríguez, J.T.; Needham, J.T.; Morales Torres, Adrián; Escuder Bueno, Ignacio (Taylor & Francis, 2017)

[EN] In many areas of the world, dams and levees are built to reduce the likelihood of flooding. However, if they fail, the result can be catastrophic flooding beyond what would happen if they did not exist. Therefore, ...
A comparative analysis of the application of water quality exemptions in the European Union: The case of nitrogen

Bolinches, Antonio; Paredes Arquiola, Javier; Garrido, Alberto; De Stefano, Lucia (Elsevier, 2020-10-15)

[EN] Freshwater ecosystems and water uses may be jeopardized by the degradation of water quality. The Water Framework Directive of the European Union (EU) sets environmental objectives for water bodies but foresees the ...
A comparative analysis of the effectiveness of flood management measures based on the concept of retaining water in the landscape in different European hydro-climatic regions

Salazar Galán, Sergio Andrés; Francés, F.; Komma, J.; Blume, J.; Francke, T.; Bronstert, A.; Blöschl, G. (European Geosciences Union (EGU), 2012)

In this paper, we analyse the effectiveness of flood management measures based on the concept known as retaining water in the landscape . The investigated measures include afforestation, micro-ponds and small-reservoirs. ...
A comparative analysis of the forest fires phenomenon in Spain and Poland

Tay Aragonés, Layla Ruby (Universitat Politècnica de València, 2020-10-02)

[EN] Fires are one of the main causes of damage to the forests. Due to the number of fires that occur each year, and the extent of losses caused, in particular, by large-scale fires, they are increasingly recognized as ...
A comparative study of the influence of salt concentration on the performance of an osmotic membrane bioreactor and a sequencing batch reactor

Soler Cabezas, José Luis; Lujan Facundo, Maria Jose; Mendoza Roca, José Antonio; Vincent Vela, Maria Cinta; Pastor Alcañiz, Laura (John Wiley & Sons, 2018)

[EN] BACKGROUNDAn osmotic membrane bioreactor (OMBR) is a wastewater treatment technique that presents low energy requirements, low membrane fouling and high removal of nutrients and organic matter. However, reverse salt ...
A Comparative Study of Three-Dimensional Hydraulic Conductivity Upscaling at the MAcro-Dispersion Experiment (MADE) site, Columbus Air Force Base, Mississippi (USA)

Li ., Liangping; Zhou ., Haiyan; Gómez-Hernández, J. Jaime (Elsevier, 2011-07-11)

Simple averaging, simple-Laplacian, Laplacian-with-skin, and non-uniform coarsening are the techniques investigated in this comparative study of three-dimensional hydraulic conductivity upscaling. The reference is a fine ...
A comparison between ES-MDA and restart EnKF for the purpose of the simultaneous identification of a contaminant source and hydraulic conductivity

Xu, Teng; Gómez-Hernández, J. Jaime; Chen, Zi; Lu, Chunhui (Elsevier, 2021-04)

[EN] Understanding a contaminant source may help in a better management and risk assessment of a polluted aquifer. However, contaminant source information may not be available when a pollutant is detected in a drinking ...
A comparison of artificial neural networks and random forests to predict native fish species richness in Mediterranean rivers

Olaya Marín, Esther Julia; Martinez-Capel, Francisco; Vezza, Paolo (EDP Sciences, 2013)

[EN] Machine learning (ML) techniques have become important to support decision making in management and conservation of freshwater aquatic ecosystems. Given the large number of ML techniques and to improve the ...
A comparison of design storms for urban drainage system applications

Balbastre-Soldevila, Rosario; García-Bartual, Rafael; Andrés Doménech, Ignacio (MDPI AG, 2019)

[EN] The present research develops a systematic application of a selected family of 11 well-known design storms, all of them obtained from the same rainfall data sample. Some of them are fully consistent with the ...
A conceptual numerical model to simulate hydraulic head in aquifers that are hydraulically connected to surface water bodies

Pulido Velázquez, David; Sahuquillo Herráiz, Andrés; Andreu Álvarez, Joaquín (Wiley: 12 months, 2011-07)

In this paper, we present a conceptual-numerical model that can be deduced from a calibrated finite difference groundwater-flow model, which provides a parsimonious approach to simulate and analyze hydraulic heads and ...
A decision analysis framework for stakeholder involvement and learning in groundwater management

Karjalainen, T.P.; Rossi, P. M.; Ala-aho, P.; Eskelinen, R.; Reinikainen, K.; Klove, B.; Pulido-Velazquez, M.; Yang, H. (European Geosciences Union (EGU), 2013)

[EN] Multi-criteria decision analysis (MCDA) methods are increasingly used to facilitate both rigorous analysis and stakeholder involvement in natural and water resource planning. Decision making in that context is often ...
A decision support system for water quality issues in the Manzanares River (Madrid, Spain)

Paredes Arquiola, Javier; Andreu Álvarez, Joaquín; Solera Solera, Abel (Elsevier, 2010)

The Manzanares River, located in Madrid (Spain), is the main water supplier of a highly populated region, and it also receives wastewater from the same area. The effluents of eight Waste Water Treatment Plants (WWTPs) ...
A decision support tool for the order promising process with product homogeneity requirements in hybrid Make-To-Stock and Make-To-Order environments. Application to a ceramic tile company

Alemany Díaz, María Del Mar; Ortiz Bas, Ángel; Fuertes-Miquel, Vicente S. (Elsevier, 2018)

[EN] Order promising in manufacturing systems that produce non-uniform units of the same finished good becomes a more complex process when customer orders need to be served with homogeneous units. To facilitate this task, ...
A Decision Support Tool for Water Supply System Decentralization via Distribution Network Sectorization

Vegas Niño, Oscar T.; Martínez Alzamora, Fernando; Tzatchkov, Velitchko G. (MDPI AG, 2021)

[EN] Many water supply systems, conceived to operate in centralized manner, face difficulties to adapt to dynamic changes, such as population growth, city extension, and industrial development. Decentralization of these ...