Francisco Taveira-Pinto

Francisco Taveira-Pinto
University of Porto | UP · Departamento de Engenharia Civil

FEUP Full Professor

About

334
Publications
66,037
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2,600
Citations

Publications

Publications (334)
Article
Full-text available
E-Motions is a low-cost and versatile/adaptable wave energy converter conceived towards harnessing energy from wave/wind-induced roll oscillations of floating platforms. This paper focuses on a recently conducted parametric physical modelling stage with three hull designs (half-cylinder, half-sphere and trapezoidal prism), which features a disrupti...
Article
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Layout optimization of wave energy offshore parks is a challenging task, as it encompasses various design objectives and constraints attributed to the complex hydrodynamic interactions. The wave energy converter (WEC) park performance is affected by local environment and device characteristics. To solve this challenge, advanced numerical algorithms...
Article
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The marine renewable energy (MRE) industry is being stimulated by the growing world energy demand, climate change mitigation policies, and land-use conflicts [...]
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The combined exploitation of wave and offshore wind energy resources is expected to improve the cost competitiveness of the wave energy industry as a result of shared capital and operational costs. In this context, the objective of this work is to explore the potential benefits of co-locating CECO, an innovative wave energy converter, with the comm...
Article
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Marine energy harvesting and offshore structures for marine renewable energy exploitation rise as a trending topic of both research and industrial activities. However, many challenges are yet to be tackled and solved when it comes to place such equipment and structures at sea. Over the past years the Marine Energy Group at FEUP has been tackling so...
Article
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Despite several wave energy converters (WECs) having been developed to present, no particular concept has emerged yet. The existing inventions vary significantly in terms of the operation principle and complexity of WECs. The tethered point absorbers (PAs) are among the most known devices that, thanks to their simplicity, appear to be cost-effectiv...
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The buckling analysis of an offshore pipeline refers to the analysis of temperature-induced uplift and lateral buckling of pipelines by analytical, numerical, and experimental means. Thus, the current study discusses different research performed on thermal pipe-buckling and the different factors affecting the pipeline’s buckling behaviour. The curr...
Conference Paper
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Hundreds of different wave energy converter (WEC) concepts exist around the globe, yet none has individually reached a commercial stage. Various factors justify this, such as high costs and survivability at sea (short-term, due to storms, or long-term, due to fatigue and biofouling). Hence, a disruptive approach is required. This paper discusses a...
Article
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Seaports’ breakwaters serve as important infrastructures capable of sheltering ships, facilities, and harbour personnel from severe wave climate. Given their exposure to ocean waves and port authorities’ increasing awareness towards sustainability, it is important to develop and assess wave energy conversion technologies suitable of being integrate...
Article
Offshore wind with high energy density and low turbulence has attracted the global scientific community towards the development of the Offshore Wind Turbines (OWTs). Today, most of the shallow water sites are already occupied, and the industry is looking to install turbines at the deep water sites (water depth > 50m). However, an OWT support struct...
Article
This study proposes a benchmarking approach to assess water supply and sanitation services’ performance in Brazilian municipalities from an integrated perspective of efficiency and access. The regional differences and the impact of the governance models adopted by different municipalities (local public entities, regional public entities, and privat...
Article
E-Motions wave energy converter is a promising device capable of harnessing energy from wave/wind induced roll oscillations onto a generic floating platform, whose development was initiated with an experimental proof-of-concept study that, despite demonstrating the potentialities of the device, also highlighted the need for further developments, ai...
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Treated wastewater has the potential to be a feasible alternative to supply non-potable uses and avoid water scarcity in urban areas, but it is important to understand and compare the associated energy consumption and CO2 emissions. This study presents a comparative analysis of the water–energy nexus associated with the traditional water supply and...
Conference Paper
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This extended abstract summarizes the latest developments regarding the EMotions , a promising wave energy device capable of converting wave/wind induced roll oscillations of multipurpose offshore floating platforms into energy. This concept has been subjected to an experimental study (1:20 geometric scale) for three hull designs: half-cylinder, ha...
Article
Numerical models are valuable tools to provide information on wave-structure interaction processes that are difficult to measure in a physical model. The current level of accuracy of numerical models is relatively high but an adequate validation to establish the models’ empirical parameters is required to ensure a correct representation of the phen...
Article
Buckling is a crucial phenomenon to be considered in offshore pipelines and is dependent on the resistance of the surrounding soil, which depends on the diameter of the pipe (D) and embedment depth (H). In this study, the behaviour of the failure mechanisms and the capacity factors are investigated for a practical range of embedment depth (H) and d...
Article
Single-layer cube (SLC) armoured breakwaters with a regular placement pattern are a relatively recent concept despite the cube being one of the oldest concrete units available. Limited investigation on the performance and hydraulic stability of this armour type is available to date. This work presents a quantitative assessment of the damage evoluti...
Book
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Volume 21, Issue 1 - March 2021 ISSN 1646-8872 Editorial Note Integrated Coastal Zone Management: preservation, adaptation and monitoring Francisco Taveira-Pinto, Paulo Rosa-Santos e Tiago Fazeres-Ferradosa Articles Referenciais verticais baseados no nível médio da Água do mar e seus impactos nas zonas costeiras brasileiras - Estudo de caso: Sant...
Article
The turbulent plunging jet of a nearly incompressible fluid into a stagnant fluid is of great importance in many practical applications, especially for the engineering of hydropower. As an example, the dynamic load exerted by the impact of turbulent high-velocity jets into a pool must be estimated to evaluate the potential destabilization of a rock...
Conference Paper
As well-established tools used by offshore industries for over 30 years, Boundary Integral Element Method-based (BIEM) models have been used by researchers to numerically model and study wave energy converters (WECs) such as CECO (López et al., 2017). However, being based on potential theory, non-linear effects such as viscous damping are not accur...
Article
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The offshore wind is the sector of marine renewable energy with the highest commercial development at present. The margin to optimise offshore wind foundations is considerable, thus attracting both the scientific and the industrial community. Due to the complexity of the marine environment, the foundation of an offshore wind turbine represents a co...
Article
Buried offshore pipelines are crucial for the swift transportation of oils and similar fluidized materials from the oil rigs to the processing center or vice versa. In this study, a 2-D finite element analysis is performed to understand the pipeline-soil interaction, the failure mechanism of soil and the variation of capacity factors with different...
Article
Wave overtopping is a critical aspect to take into consideration when designing a coastal structure. An adequate crest geometry (a combination of height and width) is required to maintain the required acceptable safety levels for the population and infrastructure behind the structure. This paper presents the wave overtopping results of laboratory e...
Article
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Despite the efforts of developers, investors and scientific community, the successful development of a competitive wave energy industry is proving elusive. One of the most important barriers against wave energy conversion is the efficiency of the devices compared with all the associated costs over the lifetime of an electricity generating plant, wh...
Article
Ocean related activities are often supported by offshore equipment with particular power demands. These are usually deployed at remote locations and have limited space, thus small energy harvesting technologies, such as photovoltaic panels or wind turbines, are used to power their instruments. However, the inherent energy sources are intermittent a...
Article
Oscillatory wave energy converters of the sloped type may allow absorbing power from ocean waves efficiently if a valid optimal design is used. In earlier studies, the optimized geometry for the CECO device was defined by implementing a simplified frequency-domain model. In this paper, that geometry is evaluated against the former one by taking int...
Article
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Over the past years, Maritime Engineering has consistently been a journal of many remarkable scientific contributions in numerous topics of Offshore and Coastal Engineering, as well as in other related topics of advanced research and practical applications in Maritime Engineering. Owing to its track-record of publishing high-quality contributions ,...
Article
Marine Renewable Energy (MRE) sources, such as offshore wind, waves, tides, ocean currents, thermal and salinity gradients, appear as promising low-carbon forms of energy. However, with the sole exception of offshore wind, MRE exploitation is far from being commercially feasible. Among the obstacles faced by the sector, the complex legal framework...
Article
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As the world strives to remove its reliance on fossil fuels, wave energy presents a reliable source of renewable energy with a very high potential. Numerical simulations offer an inexpensive alternative, in comparison to physical modelling, for the development of wave energy converters. In this paper, a computational fluid dynamics model of the CEC...
Article
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Inspired by observing the motions of vessels at sea, the E-Motions has been proposed as an innovative concept capable of converting wave (and wind) induced roll oscillations on multipurpose offshore floating platforms into electricity. The device can be integrated, theoretically, into any type of offshore floating structure, given its simple 3-comp...
Article
Breakwater concrete armour units have been continuously evolving since the 1950s. Lower concrete consumption , increased hydraulic stability, reduced wave run-up, and easier placement techniques are the main drivers of this development. A recent innovative solution for breakwater armour, based on one of the oldest type of units available, consists...
Article
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Offshore oil and gas platforms have very high-power demands that are usually met locally by using gas turbines. Nowadays, the industry is seeking for environmentally friendly alternatives to power supply those facilities, such as by means of marine renewable energy. Motivated by economic and environmental aspects, this paper addresses the value pro...
Article
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Ocean waves constitute an abundant source of clean and predictable energy, with the potential to partly replace carbon intensive energy sources. At present, several technologies to convert wave energy into electricity are being developed, but those suitable for integration into port breakwaters present additional advantages. This paper presents a n...
Article
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Absorbing wave power from oceans for producing a usable form of energy represents an attractive challenge, which for the most part concerns the development and integration, in a wave energy device, of a reliable, efficient and cost-effective power take-off mechanism. During the various stages of progress, for assessing a wave energy device, it is c...
Article
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Within the scope of a changing energy market, wave energy has yet to reach a level of commercial viability that enables it to become competitive with alternative energy sources, both renewable and non-renewable. Despite the well-known advantages inherent to the resource, there are several challenges that must be overcome before wave energy gains a...
Article
A triboelectric nanogenerator (TENG) is a new energy harvester that converts small scale mechanical motions into electrical energy by a combination of triboelectrification and electrostatic induction through the periodic contact-separation and/or sliding movement between two tribo-materials with different abilities of gaining or losing electrical c...
Article
Wave climate and associated energy characterization is essential for an assessment of a country's renewable energy potential. A wave model was validated against satellite data with good performance in terms of error metrics. The hindcast data, covering the period 1979–2018, was used to describe the spatial, seasonal and interannual variability and...
Conference Paper
Most of the existing wave energy converters are being developed towards supplying the mainland grid with electricity, yet there are alternative applications. Under the scope of the i.nano.WEC project, an offshore application is proposed, aimed at developing the first marine buoy prototype integrating highly efficient energy harvesting systems based...
Article
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This paper presents a series of large-scale wave flume experiments on the scour protection damage around a monopile under combined waves and current conditions with model scales of 1:16.67 and 1:8.33. The main objective is to compare the damage data obtained from these large-scale models with existing monopile scour protection design approaches, wh...
Article
Wave measuring equipment are subject to malfunction that can be caused by various reasons such as maintenance, navigation accidents, errors in communications and biofouling of sensors. This can eventually result in loss of valuable data before the equipment is fixed. A continuous data set is often critical for modelling and/or analysis of wave cond...
Book
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This is a reprint of articles from the Special Issue published online in the open access journal Energies (ISSN 1996-1073) from 2018 to 2019 (available at: https://www.mdpi.com/journal/energies/special issues/marine).
Article
This paper presents the hydrodynamic optimization study of CECO, a point absorber wave energy converter (WEC) with sloped motion. To maintain the overall costs, the characteristic dimensions of the optimized solution were not allowed to change significantly. Instead, different geometrical shapes have been generated and numerically investigated base...
Article
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Offshore locations present significant amounts of wave energy and free sea space, which could facilitate the deployment of larger numbers of wave energy converters (WECs) in comparison with nearshore regions. The present study aims to find a suitable design for an offshore floating version of CECO, a sloped motion WEC. For this purpose, a new desig...
Article
The design of appurtenant structures for dams, such as spillways, is a complex task because of the turbulent high-velocity aerated nature of the flowing water. In previous years, physical models would have been the only practical tool available to gain insight into the three-dimensional and time-dependent nature of spillway flows. Now, hydropower d...
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The analysis of damage in rubble mound scour protections is crucial for the armour stability assessment. Former methodologies focused on the analysis of the maximum damage number. This work introduces a complementary methodology to determine and characterize damage statistical distribution based on a flexible arrangement of sub-areas. The sub-areas...
Article
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Seaports are highly energy demanding infrastructures and are exposed to wave energy, which is an abundant resource and largely unexploited. As a result, there has been a rising interest in integrating wave energy converters (WEC) into the breakwaters of seaports. The present work analyzes the performance of an innovative hybrid WEC module combining...
Conference Paper
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As environmental and scarcity issues related to the use of fossil fuels become increasingly pressing, renewable energy sources are becoming a competitive and sustainable alternative. As a result, new ways of harvesting clean and renewable energy are being actively pursued, such as wave energy, which remains largely untapped. Conversely, seaports ar...
Article
In this study, the simultaneous application of sacrificial piles and cable was experimentally examined as a pier scour countermeasure. The experiments were carried out for a single pier, a group of two and three piers using a clear-water regime. It is believed that applying the sacrificial piles and cable at the same time decreases the scour depth...
Article
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Offshore foundations, namely for offshore wind, wave and tidal applications, often require the use of scour protections. Rip-rap scour protections are an important element of the foundation to ensure that the natural frequency stays within the design limits. Scour protection design still presents a remarkable empirical nature, which typically leads...
Article
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The present paper provides a reliability assessment of scour protections applicable to both the static and dynamic stability design. As a case study, Horns Rev 3 hindcast data is used to simulate different failure criteria for an exemplary scour protection suitable for an offshore monopile foundation. The results show that the probability of failur...