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103
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September 2020 - August 2021
July 2019 - September 2019
October 2018 - September 2020
Publications
Publications (103)
This paper presents a methodology to assess the effects of management strategies of environmental flows on the hydrological alteration of river basins on a daily scale. It comprises the collection and analysis of data, the implementation and calibration of a water allocation model; the computation of the natural flow regime; and the estimation, nor...
The flow over uneven topography is a problem of interest in environmental fluid flow modeling, including flows over river bedforms, exchange flows over oceanic sills or the airflow over mountains. The common experimental procedure to investigate these flows, moving a small obstacle in a laboratory flume, yields experimental difficulties, whereas mo...
The management of environmental flows is of paramount importance in regulated water resources systems to preserve river ecosystems. This work proposes a methodology to assess habitat alteration in river basins altered by management activities. The methodology is based on the joint application of a basin management model (SIMGES, AQUATOOL) and a mod...
Highly regulated basins have traditionally required management practices to mitigate the negative environmental impacts and ensure human well-being. This paper proposes and assesses environmental and water supply deficit indicators to assist in the management of environmental flows (e-flows). For that, a water allocation model is applied, and hydro...
This paper analyses the effects of environmental flows on water quality within a highly regulated basin, focusing on the Turia River basin in the eastern Iberian Peninsula. Through water management and water quality models, a series of simulations were conducted, introducing variations in the outflows of the Loriguilla reservoir to evaluate the eff...
This article presents a novel methodology to assess the spatial and temporal variations of water resources exploitation within regulated river basins. The methodology, which is based on the application of a basin management model to properly assess the consumed and available water, was applied to a case study in the Iberian Peninsula to analyze the...
In this work, a combined multidisciplinary method to characterize coastal cliff environments is presented. It combined two complementary approaches – engineering and geomorphological. The first one is represented by the wave power values along the cliff face. For that purpose, the deep-water wave climate is statistically characterized, and high-ene...
Assessing the health of hydrological systems is vital for the conservation of river ecosystems. The indicators of hydrologic alteration are among the most widely used parameters. They have been traditionally assessed at the scale of river reaches. However, the use of such indicators at the basin scale is relevant for water resource management since...
The implementation of renewable energies is among the main challenges that we are confronting in the present situation of climate change. In this work, an artificial neural network (ANN) is optimized and used to assess the wave energy resource available to a wave farm over its service life. We select as case study a stretch of coastline in southern...
Coastal cliffs cover about 75% of the world's coastlines. Many of these cliffs suffer severe erosion problems, which are mainly caused by wave action and lead to important damages. The main objective of this work is to propose and apply a methodology to characterize and map wave exposure levels for the management of cliff coasts. The methodology pr...
The dam-break wave modeling technology relies upon the so-called shallow water equations (SWE), i.e., mass and momentum vertically averaged equations by implementing the shallow water hypotheses, namely (i) horizontal velocity component independent of the vertical coordinate, (ii) vertical velocity component is null, (iii) pressure distribution is...
Among the available type of models in the literature, the vertically-averaged modelling of coastal flow processes is frequently accomplished resorting to Boussinesq-type equations. These models account for non-hydrostatic flow effects through the inclusion of dispersive extra terms in the governing equations, demanding high numerical accuracy while...
The majority of the software platforms designed for non-hydrostatic shallow water flow modelling rely on the solution of computational-costly three-dimensional flow models or depth-averaged Boussinesq-type models that require optimization of dispersive terms. In this field, an unexplored but reliable alternative is the Vertically-Averaged and Momen...
This work uses the weighted residual method to simulate non-hydrostatic flows in ocean and coastal areas in a vertically-averaged framework. A Vertically-Averaged and Moment equations set is developed. The system is solved through a hybrid finite volume-finite difference numerical scheme to tackle the hyperbolic and elliptic parts of the equations....
This paper presents a novel approach to characterize cliff exposure to marine action that combines wave power and biology. This multidisciplinary approach is illustrated through a case study on a coastal stretch in NW Spain – the Catedrales Natural Monument. The engineering perspective is based on quantifying the wave power acting on the cliff. To...
The operativity of the transport infrastructures and urban developments protected by coastal structures is conditioned by flooding events and the resulting wave overtopping. This work presents a methodology to assess the operational conditions of infrastructures located in coastal areas based on the combination of advanced statistical techniques, l...
This work presents a software platform to compute depth-integrated non-hydrostatic coastal and open channel flows. The software is based on the Vertically-Averaged and Moment (VAM) equations model. The VAM model uses the weighted residual method to account for the non-hydrostaticity and non-uniformity of flow. After presenting the governing equatio...
In this chapter, a new methodology to manage coastal protection by means of wave farms is proposed. Artificial intelligence tools, more specifically artificial neural networks (ANNs), were used to assess dry beach surface differences between the no wave farm situation and different wave farm project scenarios. A number of alongshore locations and l...
Many Mediterranean coastal areas encounter similar problems and gaps between science, governance, and implementation of sustainable management at local-regional scales. There is often a lack of coordination between management of inland and coastal areas, and a lack of integrated land-sea data and knowledge exchange to support transitions towards su...
El presente trabajo presenta un análisis comparativo entre los últimos avances en el modelado promediado de flujos sobre diques de materiales sueltos. Entre los modelos más relevantes se encuentran: (i) modelos no hidrostáticos con transporte de sedimentos, (ii) modelos hidrostáticos con transporte de sedimentos y movimiento dinámico granular y (ii...
In this work, a novel approach based on artificial intelligence (AI) to assess the efficiency of wave energy converter (WEC) farms in coastal protection isdeveloped. We consider as a case study a beach subjected to severe erosion: Playa Granada (S Spain). More specifically, we analyse the changes in the dry beach area (quantified through the Pelnar...
This paper presents a comparative analysis of the last advances in depth-averaged modelling of overtopping flow over granular
dikes. Among the most relevant models in this field, three families of models are described: (i) non-hydrostatic models with sediment
transport, (ii) hydrostatic models with sediment transport and dynamic granular beds, and...
Wave farms, i.e., arrays of wave energy converters (WECs), have been proposed to fulfil the dual function of carbon-free energy generation and coastal protection. The objective of this work is to investigate, for the first time, how the coastal protection performance against flooding is affected by WEC geometry. This is done by means of a case stud...
Climate change is poised to exacerbate coastal erosion. Recent research has presented a novel strategy to tackle this issue: dual wave farms, i.e., arrays of wave energy converters with the dual function of carbon-free energy generation and coastal erosion mitigation. However, the implications of sea level rise – another consequence of climate chan...
Wave farms, i.e., arrays of Wave Energy Converters (WECs), have recently been proven to be effective in fulfilling the dual function of carbon-free energy generation and coastal protection. In this paper these dual-function wave farms are referred as dual wave farms. The objective of this work is to investigate the influence of the WEC configuratio...
This paper investigates the response of a mixed sand and gravel (MSG) barrier coastline to storms and sudden relative sea-level change using the numerical model XBeach-G. The barrier beaches of southern Hawke’s Bay, New Zealand provide a natural laboratory for the work owing to spatial variability in instantaneous land deformation that occurred dur...
Coastal flooding, already an acute problem in many parts of the world, will be exacerbated in the near future by the sea level rise induced by climate change. The influence of wave farms, i.e., arrays of wave energy converters, on coastal processes, in particular sediment transport patterns, has been analysed in recent works; however, their influen...
In dual wave farms, i.e., arrays of wave energy converters (WECs) with a dual function - generation of renewable power and mitigation of coastal erosion - the spacing between the WECs is a fundamental design parameter. The present research has the objective of establishing how this parameter affects the shoreline evolution behind the array and, on...
This paper presents a complete methodology for an integrated simulation of the influence of seabed morphology on the performance of Oscillating Water Column wave energy converters. Different wave characteristics are tested, particularly storm and post-storm conditions. The simulation domain is set in ANSYS Fluent®, where the changes in seabed under...
For wave energy to become a fully-fledged renewable and thus contribute to the much-needed decarbonisation of the energy mix, the effects of wave farms (arrays of wave energy converters) on coastal systems must be addressed. The objective of this work is to investigate the effects of wave farms on the longshore sediment transport and shoreline evol...
The impacts of wave farms (arrays of wave energy converters, or WECs) on the nearshore must be fully understood for wave technology to develop and thus contribute to a sustainable, carbon-free energy mix in the near future. The objective of this work is to investigate the role played by the farm layout on the wave propagation patterns leewards and...
This work presents a new methodology for the long-term simulation and uncertainty analysis of the performance of different alternatives of wave energy converter arrays. With it, we can analyze complete operational lifetime time-series of energy production for any type of wave energy converter. The methodology is based on the application of cutting...
This paper presents a software platform to compute the total water level, one of the key variables for the environmental management of coastal zones. The platform integrates six modules: (1) simulation of deep-water wave variables, storm surge and river flow; (2) wave downscaling; (3) wave propagation; (4) contribution of the river discharge; (5) a...
Este trabajo estudia los efectos que una granja de convertidores de energía del oleaje induce, en función de su localización, sobre la hidro- y morfodinámica de una playa heterogénea en un sistema deltaico (Guadalfeo, sur de España). Para ello, ocho escenarios con distinta localización longitudinal fueron definidos y los resultados fueron comparado...
This book examines the performance of oscillating water column (OWC) wave energy converters. It discusses the influence of humid air inside the chamber and changes in the seabed, and also investigates the role of wave energy converters in coastal protection.
The authors use a real gas model to describe the thermodynamics of the air–water vapour mi...
Many deltas across the globe are retreating, and nearby beaches are undergoing strong erosion as a result. Among soft and prompt solutions, nourishments are the most heavily used. This paper presents an integrated methodology to forecast the efficiency of nourishment strategies by means of wave climate simulations, wave propagations with downscalin...
Many worldwide coasts are under erosion with climate projections indicating that damages will rise in future decades. Specifically, deltaic coasts are highly vulnerable systems due to their low-lying characteristics. This paper investigates the role of wave energy converter (WEC) farms on the protection of an eroding gravel-dominated deltaic coast...
This paper presents an integrated educational methodology to provide better, more extensive training to students in engineering disciplines. The methodology integrates both existing and ad hoc tools to improve mainly the following skills: holistic and comprehensive views and understanding of real problems, working in teams, communication abilities,...
Over the last few decades, several efforts have been made to develop an alternative and sustainable energy source from wind waves. To achieve financial sustainability of this technology, most of the research has focused on analyzing facilities composed of several wave energy converters (WECs) arrays instead of isolated ones. Although the interactio...
This paper investigates the profile response of a mixed sand-gravel deltaic beach (Playa Granada, southern Spain) forced by storm waves from varying directions. Beach morphology was monitored over a 36-day period with variable wave conditions, and profile response was compared to model predictions using the XBeach-G model and a longshore sediment t...
This paper presents a numerical model to analyse the effects of changes in the bedforms morphology on Oscillating Water Column (OWC) wave energy devices. The model was developed in FLUENT® and based on the Actuator Disk Model theory to simulate the turbine performance. The seabed forms were reproduced with the morphodynamic model XBeach-G for a ser...
Deltaic systems are sensitive to natural and human-induced changes as they accommodate numerous activities and have high ecological, economic and social importance. Mediterranean deltas are particularly vulnerable to anthropogenic activities, which alter the coastal land availability. This work addresses the morphological evolution of the Guadalfeo...
This paper addresses the evolution of a mixed beach (Playa Granada, southern Spain) forced by an artificial nourishment project through the analysis of field observations and the modeling of hydro- and morphodynamics. The beach profile and coastline were periodically surveyed over a six-month period; a wave propagation model was calibrated by means...
Although the influence of both natural and human-induced changes on the evolution of worldwide deltas have been widely addressed, few studies have analyzed the variations of the submerged morphology due to river regulations by dams. In this work, we analyze the changes in the submerged morphology of a Mediterranean deltaic system after the regulati...
This work aims to calibrate the XBeach-G model on a mixed sand-gravel deltaic coast (Playa Granada, southern Spain) and apply it to address the overwash vulnerability. Field surveys, consisting of topographical measurements and sediment sampling in two selected areas, were performed before and after two extreme southwesterly storms. A calibrated wa...
Los estuarios, nexo entre la tierra y el mar, son fundamentales para el desarrollo de actividades agrícolas y pesqueras. Y por ende, para el transporte marítimo y el desarrollo de diversas actividades portuarias. Para el mantenimiento de la navegabilidad hacia los puertos interiores, es frecuente recurrir a actuaciones de dragado. La creación de ca...
This book describes recent advances in the morphodynamics of mixed sand and gravel Mediterranean coasts, and provides updates and new methods for their study and management. It assesses how the differences in the geomorphic setting, in comparison with traditional sandy beaches, result in distinctive physical processes governing the dynamics of thes...
The influence of both natural and human-induced changes on the evolution of worldwide deltas has been widely addressed; however, the variations of the submerged morphology of the delta and their implications on coastal dynamics have received limited attention. This work details the spatial and temporal variability of the mouth of the Guadalfeo Rive...
In the field of Marine and Coastal Engineering, the analysis and simulation of wave climate and wave
propagation towards coastal areas is a fundamental knowledge for the training of undergraduate
students. The main objective of this work is to present two visual tools that solve numerical methods
typically used in the framework Marine and Coastal E...
This work addresses the effects of the construction of a reservoir 19 km from the mouth on the dynamics of the Guadalfeo delta (southern Spain), a Mediterranean delta in a semi-arid and high-mountain basin. To this end: (1) bathymetric and topographic measurements were analyzed and correlated with the fluvial and maritime forcing agents, and (2) ca...
This paper addresses the changes in the morphology and sedimentology of a micro-tidal mixed sand and gravel beach (Playa Granada, southern Spain) forced by wave and water-level variations, and human intervention through nourishment. Monthly and storm event-driven beach surveys, consisting of topographical measurements and sediment sampling in two s...
This work addresses the effects of the construction of a reservoir 19 km from the mouth on the dynamics of the Guadalfeo delta (southern Spain), a Mediterranean delta in a semi-arid and high-mountain basin. The sediment volume transported as bedload and accumulated in the delta was estimated under two scenarios by means of a calibrated hydrological...
La mayoría de los puertos Andaluces requieren ser dragados periódicamente. Estos trabajos son diseñados para recuperar la operatividad original con la que fueron diseñados. En otras ocasiones, su finalidad es la regeneración de determinadas zonas de playa con carácter de urgencia tras eventos de temporal. Para dar una respuesta basada en el estado...
La mayoría de los puertos Andaluces requieren ser dragados periódicamente. Estos trabajos son diseñados para recuperar la operatividad original con la que fueron diseñados. En otras ocasiones, su finalidad es la regeneración de determinadas zonas de playa con carácter de urgencia tras eventos de temporal. Para dar una respuesta basada en el estado...
Progradational sedimentary bodies are common features of inner shelves worldwide. These features are sandy bodies deposited beyond the shoreface in steep inner shelves, and usually present an undulating geometry. They can affect the wave propagation patterns and hence, the sediment dynamics and shoreline morphology. However, few studies have analyz...
Deltas are located at the transition between terrestrial and aquatic environments, consequently, they respond rapidly to both natural and human-induced disturbances. Mediterranean deltaic systems are particularly sensitive to changes in the coastline and in the sea level. This work addresses the evolution of the Guadalfeo Delta during the last fift...
La influencia de alteraciones naturales e inducidas por el hombre en la evolución de sistemas deltaicos ha sido ampliamente estudiada, sin embargo, poco trabajos han analizado las variaciones de la morfología sumergida y sus implicaciones. Este artículo detalla la variación espacio-temporal de un sistema deltaico heterogéneo (Playa Granada, sur de...
