Papers
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Analysis of forces on a submarine outfall by a RANS-VoF numerical wave tank
Knowledge of forces due to the action of waves on submarine outfalls composed by a pipe and stabilizing concrete weights, considering the wave propagation direction to the outfalls, is essential to their design. 3D numerical models based on RANS-VoF (Reynolds-Average-Navier-Stokes Volume-of-Fluid) are able to estimate forces on the pipe and weights. The present study aims to simulate a submarine outfall with stabilizing concrete weights at 1:15 scale which was previously tested in the 3D Shallow Water Basin at the Danish Hydraulics Institute (DHI) to analyse the influence of the direction of the incident wave and the distance from the pipe to the bottom on the outfall forces. In this study, numerical results are compared with experimental ones for waves with four different amplitudes and with wave incidence perpendicular to the outfall. The use of k-
Year: 2019
Number Pages:
50-59pp.
Author(s): Didier, E.; Neves, M. G.; Teixeira, P.
: Defect and Diffusion Forum
Editor: Trans Tech Publications Ltd, Switzerland
Volume:
Vol. 396.
Keywords: Numerical wave tank; RANS-VoF; Forces; Submarine outfalls
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Damage progression in rubble-mound breakwaters scale model tests, under a climate change storm sequence
This paper describes the two-dimensional (2D) physical model tests of a rock armor breakwater, performed at LNEC´s experimental facilities, under the framework of the HYDRALAB+ project. The aim of the present work was to evaluate damage evolution under future climate change scenarios, by using different damage evaluation techniques. The tested wave conditions simulated a storm sequence where two water levels (low water and high water) were considered, as well as an increase of the wave height. The water levels and the wave heights were chosen to simulate extreme events forecasted on climate change scenarios. Damage evaluation was based on the traditional counting method and on stereo-photogrammetric techniques. Test results are presented in terms of the damage parameter S and in terms of the percentage of removed armor units. The analysis is focused on the damage progression during the scale model tests, for the imposed storm sequence. The damage presents an oscillating behavior with two main damage areas corresponding to the active zones for each level, due to the variation of the water level between low-water and high-water. This behavior differs significantly from that found for the common storm sequences usually tested, where the water level does not change. Both measuring techniques lead to an intermediate damage of the cross-section breakwater. However, the damage parameter assessment with the stereo-photogrammetric technique allows a more versatile evaluation, since it is possible to characterize damage in representative zones of the cross-section
Year: 2019
Author(s): Fortes, C. J. E. M.; Lemos, R.; Mendonça, A. C.; Reis, M. T. L. G. V.
: Journal of Research on Engineering Structures and Materials (RESM)
Editor: MIM Research Group
Volume:
Vol. 5 Iss. 4.
Keywords: Stereo-photogrammetric techniques; Climate change; Rubble-mound breakwaters; Damage progression
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Experimental investigation on the power capture of an oscillating wave surge converter in unidirectional waves
The aim of this paper is the experimental characterization of the capture width ratio (CWR) and response amplitude operator (RAO) of a 1:10 physical model of an oscillating wave surge converter (OWSC), under unidirectional regular and irregular waves. The effects of hydraulic power take-off (PTO) system are explicitly taken in consideration. A mathematical model is proposed to describe the PTO damping as a function of the angular velocity of the flap. The harmonic decomposition of free-surface elevation, angular velocity of the flap and pressure in the PTO system demonstrates that these signals are dominated by their linear component. However, the signals also present some important higher-order frequency components. To predict the CWR of the OWSC under irregular waves the nonlinear output frequency response functions are considered as the extension of the RAO to the nonlinear case. It is shown and discussed that the PTO system, wave frequency and height have a significant influence on the CWR and RAO. The RAO curve for irregular waves does not exhibit a well-defined peak, showing a limited variation in a broadband. A weak correlation between CWR and RAO was found, i.e., the maximum CWR does not occur for the maximum value of RAO.
Year: 2019
Number Pages:
975-992pp.
Author(s): Brito, M.; Ferreira, R. L.; Teixeira, L; Neves, M. G.; R. Canelas
: Renewable Energy
Editor: Elsevier
Volume:
Volume 151.
Keywords: Power take-off: PTO damping; Response amplitude operator: RAO; Capture width ratio: CWR; Oscillating wave surge converter: OWSC; Wave energy
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Measuring wave run-up, overtopping and damage of rubble-mound breakwaters in scale model tests
A set of scale-model tests was carried out at the wave basin of the Leibniz University Hannover to extend the range of wave steepness values analysed in run-up, overtopping and armour layer stability studies, focusing on oblique extreme wave conditions and on their effects on a gentler slope breakwater
Year: 2019
Number Pages:
118-129pp.
Author(s): Santos, J. A.; Lemos, R.; Weimper, J.; Gronz, O.; Hofland, B.; Sande, J.; Pinheiro, L.; Spans, J.H.; Peña, E.; Reis, M. T. L. G. V.; Fortes, C. J. E. M.; Figuero, A.; Laiño, E.; Bornschein, A.; Kerpen
Editor: Hydralab+
Keywords: Rubble-mound breakwaters; Model tests; Overtopping; Wave run-up
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Numerical analysis of the interference between two elastically mounted cylinders in tandem subject to flows at low Reynolds numbers
Fluid-dynamic interference among cylindrical structures in arrays, frequently used in engineering, is of fundamental and practical interests since it may considerably change fluid-structure interactions and produce large fluctuating forces on structures that cause vibrations, lock-in and important motions. This paper aims to study the mutual interference between two circular cylinders in tandem arrangement, which is considered the simplest configuration of one array cylinders, elastically mounted in transversal direction and subject to a bi-dimensional uniform laminar flow at low Reynolds numbers. Both cylinders have the same diameter D and the center-to-center spacing is equal to L = 5.25D which corresponds to co-shedding regime. The academic numerical model Ifeinco, which is based on the finite element method and uses a partitioned scheme that considers two-way interaction of fluid flow and structure, has been employed to the analysis. Combinations of upstream and downstream stationary and elastically mounted cylinders are investigated for Reynolds number range from 90 to 140. Differences of flow behaviors drag and lift forces and resonance between single cylinder and cylinders in tandem arrangement were found. Mutual and respective influence of upstream cylinder motion on the downstream cylinder and vice-versa are analyzed. Results show that, in some engineering studies, the consideration of the flexibility of cylindrical structures in arrays is fundamental since it influences significantly the interference between cylinders, mainly the magnitude and direction of forces and characteristics of the resonance range, and, consequently, structural and dynamical behaviors.
Year: 2019
Number Pages:
11p.
Author(s): Teixeira, P.; Rechsteiner, P.; Didier, E.
: Journal of the Brazilian Society of Mechanical Sciences and Engineering
Editor: Springer
Volume:
Vol. 41.
Keywords: Finite element method; Vortex-induced vibration; Wake interference; Tandem arrangement; Circular cylinders
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Observação e monitorização de obras marítimas com a nova metodologia OSOM+
This paper describes a programme under the responsibility of the National Laboratory for Civil Engineering (LNEC), Portugal for the systematic observation and monitoring of maritime works, termed OSOM+, which has been applied to an extensive number of maritime structures on the Portuguese mainland coast and abroad. The OSOM+ programme comprises the following four main components for each structure: a) Periodic visual inspections by a trained technician; b) Periodic aerial inspections using a UAV/drone; c) The ANOSOM-GIS database, to store and/or query obtained information, as well as to diagnose present, evolution and risk conditions; and d) A mobile, portable, application, for real-time input and visualization of the ANOSOM-GIS database information.This recently updated methodology encompasses a number of tools whose functionalities are illustrated in this paper with an application to a case study: the Ericeira
Year: 2019
Number Pages:
22p.
Author(s): Fortes, C. J. E. M.; Capitão, R.; Henriques, M. J.; Lemos, R.; Neves, M. G.; Reis, M. T. L. G. V.; Silva, L. G.
: Revista Mundi, Engenharia, Tecnologia e Gestão
Editor: Instituto Federal do Paraná
Volume:
v.4, n.2.
Keywords: Ericeira
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A methodology to determine the optimal size of a wells turbine in an oscillating water column device by using coupled hydro-aerodynamic models
This paper describes a methodology to determine the optimal size of a Wells turbine to be used in an OWC device taking into account hydro-aerodynamic coupling, performance curves of the turbine and air pressure control by a relief valve. The proposed model, named turbine diameter optimization (TDO) model, considers the movement of the water surface inside the OWC chamber as a piston movement in response to the hydrodynamic forces from the incoming waves. The aerodynamic is based on the first law of thermodynamics applied to the air column of the chamber. The power-pressure curve of the turbine and the air pressure control by relief valve are implemented in the model to determine the turbine power output for several regular incident waves. The TDO model is initially calibrated by a numerical model based on Reynolds-Average-Navier-Stokes (RANS) equations for each wave component of an expected sea state distribution. Thereafter, the power output generated by turbines of several sizes is calculated with lower computational cost (few minutes) in comparison with RANS based models (thousands of hours) in a personal computer. This developed methodology is an important support to the process of turbine sizing for an OWC device for an expected sea state distribution.
Year: 2018
Number Pages:
9-18pp.
Author(s): Torres, F.; Teixeira, P.; Didier, E.
: Revista Renewable Energy
Editor: Elsevier
Volume:
Vol. 121.
Keywords: Air pressure control; Turbine sizing; Oscillating water column; Wave energy
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An integrated tool for modelling oscillating water column (OWC) wave energy converters (WEC) in vertical breakwaters
This paper describes the preliminary developments of an innovative integrated tool for the numerical modelling of oscillating water column (OWC) wave energy converters (WEC) integrated in vertical breakwaters. The main purpose of the tool is the numerical modelling of wave propagation from offshore to nearshore, wave-structure interaction, and the complex nonlinear hydrodynamic and aerodynamic phenomena that occur in OWC-WECs.The tool development and validation were supported by experimental data from physical model tests carried out in a wave flume at the Portuguese National Laboratory for Civil Engineering (LNEC). Prototype data were also available for the Pico OWC-WEC in the Azores, Portugal, monitored by the Portuguese Wave Energy Centre since 2005. Application of the tool for sea-wave characterization at the Azores archipelago and calculation of the corresponding wave power for a period of 10 years at various points around each island show that, in winter, there is good availability of wave energy in most quadrants of each island. In summer, the resource exploitation is only worthwhile on the north-west coasts of the islands. Physical and numerical modelling results for an OWC with a fully open chamber show good agreement between experimental data and numerical values for several incident wave conditions. The analysed results include the time series of the free-surface elevation at different locations, the time series of the mean free surface inside the water chamber, the amplification factors, the phase angles and the velocity vectors at the highest and the lowest positions of the mean free surface inside the chamber. The tool showed its potential to be useful in supporting ocean and coastal engineering projects due to its capacity to effectively reproduce the main phenomena involved in these types of studies.
Year: 2018
Number Pages:
198
Author(s): Mendonça, A. C.; Dias, J.; Didier, E.; Fortes, C. J. E. M.; Neves, M. G.; Reis, M. T. L. G. V.; Conde, J. M.; Poseiro, P.; Teixeira, P. R. F.
: Journal of Hydro-environment Research
Editor: Elsevier
Volume:
Vol. 19.
Keywords: Wave power; SWAN-URANS models; Nonlinear numerical modelling; Physical modelling; Wave-structure interaction; Oscillating water column (OWC) wave energy converter (WEC)
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Asymmetric copula
Joint statistical models for long-term wave climate are a key aspect of offshore wind engineering design. However, to find a joint model for sea-state characteristics is often difficult due to the complex nature of the wave climate and the physical constraints of seastates phenomena. The available records of wave heights and periods are often very asymmetric in their nature. This article presents a copula-based approach to obtain the joint cumulative distribution function of the significant wave heights and the up-crossing mean period. This study is based on 124-month hindcast data concerning Horns Rev 3 offshore wind farm. The extra-parametrization technique of symmetric copulas is implemented to account for the asymmetry present in the data. The analysis of the total sea, the wind-sea and primary swell components is performed separately. The results show that the extra-parametrization technique with pairwise copulas consistently provided a better goodness-of-fit when compared to symmetric copulas. Moreover, it is demonstrated that the separation of the total sea into its components does not always improve the extra-parametrized copula
Year: 2018
Number Pages:
304-334pp.
Author(s): Fazeres-Ferradosa, T.; Taveira-Pinto, F.; Vanem, E.; Reis, M. T. L. G. V.; Neves, L.
: Wind Engineering
Editor: Sage
Volume:
Vol. 42, No. 4.
Keywords: Asymmetry; Crámer
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Characterization of ship motions induced by wake waves
This paper analyses the hydrodynamic interaction between two ships, one stationary and the other navigating nearby, using physical and numerical modelling. The passing ship is a self-propelled scale model of the
Year: 2018
Number Pages:
547-555pp.
Author(s): Pedro, F.; Pinheiro, L.; Fortes, C. J. E. M.; Santos, J. A.; Hinostroza , M.
: Progress in Maritime Technology and Engineering
Editor: Taylor & Francis
Keywords: Wake waves; SWAMS; Ship motions
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Comunicação
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Application of URANS-VOF models in hydrodynamic study of oscillating water column
This paper presents a comparison of two URANS models based on the VoF approach, FLUENT (Fluent, 2006) and IH2VOF (Lara et al., 2011), to perform a detaiied analysis of the hydrodynamic phenomena outside and inside an open Oscillating Water Coiumn (OWC) device. This analysis is important to determine the ability of each solver in accurate modelling the complex non-linear phenomena which occur in the wave-fluid-structure interaction, in order to use it in the deveiopment of an innovative integrated tool at prototype scale. Numerical results of free surface elevation, oscillating free surface inside the water chamber, amplification factor and phase lag are analysed and compared with experimental data for several incident wave conditions. For an OWC with a fuliy open chamber, good agreement was achieved between experimental data and numerical results obtained with two modeis with different numerical methodologies.
Year: 2016
Number Pages:
209-220pp.
Author(s): Dias, J.; Mendonça, A. C.; Didier, E.; Neves, M. G.; Conde, J. M.; Teixeira, P.
Editor: EdiBios
Keywords: Amplification factor; Oscillating water column; URANS-VOF
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Design of scour protections and structural reliability techniques
In order to account for scour problems, protection systems are usually employed around the foundations, i.e. Arklow Bank OWF and Scroby Sands OWF (Whitehouse et al., 2011). Their design is main-ly of semi empiric nature (De Vos et al., 2011) and probabilistic approaches haven
Year: 2016
Number Pages:
527
Author(s): Fazeres-Ferradosa, T.; Taveira-Pinto, F.; Neves, L.; Reis, M. T. L. G. V.
Editor: CRC Press
Keywords: Structural reliability; Monopile foundations; Protections systems; Scour
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Design optimization of an oscillating water column wave energy converter: analytical and numerical modeling
An analytical model is applied to a schematic case of an oscillating water column (OWC), without head loss, to obtain a first estimation of the chamber hydraulic efficiency. The IH2VOF numerical model of wave-structure interations is applied to perform an investigation, useful to complement and verify the analytical approach and analyses the flow characteristics on the OWC, including nonlinear effects. The numerical model was validated against physical model tests on a schematic OWC stucture at the National Laboratory of Civil Engineering, presenting god agreement.A significant difference of amplification factor parameter was observed between lhe analytical results and numerical results and experimental data, which may be attributed to the absence of head loss in the analytical model.
Year: 2016
Number Pages:
221-232pp.
Author(s): Mendonça, A. C.; Jalon, M.L.; Correia, R.; Dias, J.; Neves, M. G.; Didier, E.
Editor: EdiBios
Keywords: Numerical modelling; Analytical modelling; Oscillating water column
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Ensaios em modelo físico de agitação marítima em redor de um navio livre
Nesta comunicação, descrevem-se os ensaios em modelo físico realizados com o objetivo de caracterizar o campo de ondas em torno de um navio livre, quando sujeito a condições de agitação incidente regular e irregular. Estes dados são especialmente importantes para a validação de modelos numéricos de caracterização da resposta de navios à ação da agitação incidente. Assim, para cada condição de agitação incidente, efetuaram-se medições da elevação da superfície livre e das componentes da velocidade em diversos pontos em redor do navio. Apresentam-se as seguintes análises dos dados experimentais: análise temporal e espetral (espetro de energia e wavelets) dos valores de elevação da superfície livre e análise temporal da velocidade das partículas, a meio da coluna de água. A análise temporal e espetral de cada série de medições obtida permite a caracterização da agitação nos pontos em redor do navio, em termos de alturas, períodos e velocidade. Avalia-se também a influência do navio nas características da agitação.
Year: 2016
Number Pages:
12p.
Author(s): Ramos, A.; Fortes, C. J. E. M.; Pinheiro, L.
Editor: LNEC
Keywords: Análise espetral; Análise temporal; Velocidade; Elevação da superfície livre
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Evaluation of wave overtopping consequences for risk assessment. The case study of Praia da Vitória harbour (Azores, Portugal)
This paper aims at presenting two diíferent methodologies to evaluale wave overtopping consequences: the Analytic Hierarchy Process (AHP) and the Analytic Network Process (ANP). The AHP is based on lhe comparison of successive and paired information that was selecled and quantified having in mind its hierarchic prioritization by taking into account lhe estimated relevance of each considered criterion or indicator. The ANP provides a general framework lo deal with decisions without making assumplions about the independence of higher level elements from lower level eiements and about the independence of the elements within a levei. In fact, the ANP uses a network without the need lo specify leveis as in a hierarchy structure iike lhe AHP. Influence is a central concept in the ANP. Applicalion of the AHP and the ANP melhodologies to lhe case study of Praia da Vitória harbour (Azores, Porlugal) is presenied. With the AHP, a consequences level map is obtained.
Year: 2016
Number Pages:
411-422pp.
Author(s): Lourenço, I.; Santos, J. A.; Fortes, C. J. E. M.; Reis, M. T. L. G. V.; Garcia, T.; Poseiro, P.; Craveiro, J.
Editor: EdiBios
Keywords: Analytic Network Process (ANP); Analytic Hierarchy Process (AHP); Risk assessment; Consequences overtopping; Wave overtopping
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Investigating the use of a video technique for wave run-up measurements on a breakwater in a laboratory flume
Wave run-up parameters are key factors in studying coastal flooding. An experiment was performed at LNEC to study wave run-up and overtopping on a breakwater.This work investigates the possibility of measuring wave run-up by using a video-monitoring technique.Water level oscillations were identified on the breakwater slope over time. Wave run-up was marked on each timestack image produced for each test.Run-up events were identified and related to the surf similarity parameter. Properties of wave run-up derived from video imagery were analysed and compared to data from a wave gauge placed over the breakwater cross-section. Results confirmed that the video imagery technique is an alternative technique for measuring run-up in physical model experiments.
Year: 2016
Number Pages:
478-480pp.
Author(s): Andriolo, U.; Poseiro, P.; Reis, M. T.; Bastos, A.P.; Fortes, C. J. E. M.; Garcia, T.
Editor: Instituto Hidrográfico
Keywords: Timestack; Image processing; Physical model; Overtopping; Run-up; Hydrodynamics
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Metodologia de análise e correção de medições de componentes de velocidade por ADV para propagação de ondas
Neste artigo apresenta-se uma metodologia que visa minimizar os erros associados à medição por ADV (Acoustic Doppler Velocimetry). Estes erros podem ter duas causas: insuficiência de partículas em suspensão na coluna de água; e desalinhamento dos eixos do ADV com os eixos coordenados do problema. Seguindo esta metodologia, aplica-se primeiramente um filtro digital para eliminar as frequências elevadas fisicamente irrealistas e, em seguida, aplica-se uma transformação de coordenadas para alinhar as componentes de velocidade medidas com o sistema de coordenadas do problema, sendo possível identificar o desalinhamento do ADV face a esse sistema de coordenadas.Apresenta-se a aplicação desta metodologia na propagação de ondas regulares num canal.
Year: 2016
Number Pages:
101-104pp.
Author(s): Conde, J. M.; Neves, C. F.; Fortes, C. J. E. M.
Editor: Instituto Hidrográfico
Keywords: Canal de ondas; Ondas regulares; Transformação de coordenadas; Filtro digital; ADV
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Modelação física em canal da propagação de ondas na Praia da Galé, Algarve
Para a praia da Galé, Algarve, foram efetuados um conjunto de ensaios em modelo físico (canal de ondas) com o principal objetivo de analisar a hidrodinâmica da propagação de ondas sobre um fundo rochoso, para várias condições de agitação regular e irregular incidente. Efetuaram-se medições da elevação da superfície livre com sondas resistivas ao longo do canal e das componentes da velocidade com ADV, a meio da coluna de água em várias secções ao longo do canal. A evolução dos resultados ao longo do canal permite um melhor conhecimento do processo de propagação e contribui com dados para a validação de modelos numéricos.
Year: 2016
Number Pages:
463-466pp.
Author(s): Ramos, A.; Fortes, C. J. E. M.; Conde, J. M.; Gabriel. S.; Reis, R.
Editor: Instituto Hidrográfico
Keywords: Análise espectral; Análise temporal; Canal de ondas; Praia da Galé; Modelação física
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Numerical simulation of the motions and forces of a moored ship in Leixões harbour
Ships berthed inside sheltered basins can experience excessive movements due to waves. The paper presents an integrated numerical tool that interconnects several numerical models to reproduce the most relevant physical phenomena associated to wave action on a moored ship, the resulting ship movements and the forces on mooring lines and fenders. A new methodology was developed to determine the hydrodynamic forces on the ship.A non-linear phase resolving Boussinesq model is used to propagate waves from outside the harbour to wherever desired location inside the harbour. A modified version of a 3D panel method model computes the hydrodynamic coefficients of the ship, whereas the Haskind relations determine the wave forces on the ship. The time series of the moored ship motions and forces on moorings are obtained with another numerical model. This new methodology is used to replicate the scale model tests of a moored tanker inside Leixões Harbour.
Year: 2016
Number Pages:
217-223pp.
Author(s): Pinheiro, L.; Fortes, C. J. E. M.; Santos, J. A.; Rosa-Santos, P.
Editor: Taylor & Francis Group
Keywords: Harbour; Leixões; Forces on mooring lines; Wave propagation; Moored ship
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O papel da modelação física no apoio aos estudos de engenharia costeira e portuária. Desafios e oportunidades
Neste artigo, apresenta-se uma descrição do papel da modelação física no apoio aos estudos de Engenharia Costeira e Portuária, ilustrando-se as suas potencialidades com exemplos de casos de estudo.Referem-se os contributos inovadores em conceitos, equipamentos, técnicas e procedimentos experimentais que têm sido desenvolvidos nos recentes anos. Assim, apresentam-se metodologias a explorar no futuro, tais como procedimentos destinados a facilitar, agilizar e automatizar as análises de estabilidade e galgamentos de quebra-mares, assim como dos danos no manto protetor, provocados pela agitação marítima nele incidente, e o acesso remoto a ensaios experimentais, e à informação associada à realização destes, a clientes/investigadores interessados.Por fim, são apontados cenários de desenvolvimento para a modelação física de modo a lidar com as consequências das alterações climáticas, e que incorporem: a) sequências de eventos de temporal, incluindo efeitos cumulativos, b) a subida do nível médio do mar; c) técnicas de medição não intrusivas que permitam obter a análise de fenómenos complexos, com características de grande variabilidade temporal e espacial, sem interferir nos mesmos ou no próprio sistema modelado.
Year: 2016
Number Pages:
13p.
Author(s): Fortes, C. J. E. M.; Capitão, R.; Lemos, R.; Neves, M. G.; Pinheiro, L.; Reis, M. T. L. G. V.
Editor: LNEC
Keywords: Engenharia costeira e portuária; Desafios e oportunidades; Casos de estudo; Modelação física
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Capítulo de Livro
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Multi-functional artificial reefs for coastal protection
N/A
Year: 2009
Number Pages:
153-210 pp.
Author(s): Voorde, M.; Antunes do Carmo, J.; Neves, M. G.
Editor: Ch. A. Hudspeth, T. E. Reeve
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Tese de Doutoramento
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Trapped-mode propagation along irregular coasts
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Year: 1999
Number Pages:
159 p.
Author(s): Santos, J. A.
Editor: ******
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Probabilistic Assessment of the Safety of Coastal Structures
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Year: 1998
Number Pages:
594 p.
Author(s): Reis, M. T.
Editor: ******
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Unsteady Nearshore Currents on Longshore Varying Topographies
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Year: 1998
Number Pages:
346 p.
Author(s): Sancho, F. E.
Editor: ******
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Simulação da agitação irregular. Técnicas matemáticas
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Year: 1973
Author(s): Carvalho, M. M.
Editor: ******
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Relatório Científico
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Valores extremos da agitação marítima. Passagem ao largo da agitação marítima adjacente a Viana do Castelo.
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Year: 1993
Author(s): Carvalho, M. M.
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Valores extremos da agitação marítima. Passagem ao largo da agitação marítima em sines
N/A
Year: 1993
Author(s): Reis, M. T.; Fortes, C. J. E. M.; Capitão, R.
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Valores extremos da agitação marítima. Programas de computador auxiliares.
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Year: 1993
Author(s): Carvalho, M. M.
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Valores extremos da agitação marítima. Sines - Tratamento local dos dados existentes.
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Year: 1993
Author(s): Carvalho, M. M.
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Valores extremos da agitação marítima. Temporais: Base de dados VALEXT.
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Year: 1993
Author(s): Carvalho, M. M.
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Aeroporto Internacional de Macau. 2 - Estudos de agitação marítima. Relatório 2.5 - Agitação marítima e níveis do mar em Macau. Relatório de síntese.
N/A
Year: 1992
Author(s): Marcos Rita, M.; Covas, J. A.; Carvalho, M. M.; Oliveira, E. M.; Silva, L. G.
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Aeroporto Internacional de Macau. 3 - Estudos de estabilidade. Relatório 3.3 - Ensaios bidimensionais de estabilidade e galgamento dos perfis das protecções este e sul do aterro da pista do aeroporto.
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Year: 1992
Author(s): Silva, L. G.; Reis, M. T.
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Aeroporto Internacional de Macau. 3 - Estudos de estabilidade. Relatório 3.4 - Ensaios tridimensionais de estabilidade e galgamentos da curva sudeste de protecção do aterro da pista do aeroporto. Rela
N/A
Year: 1992
Author(s): Silva, L. G.; Reis, M. T.
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Aplicação de método de Bouws e Battjes na interpretação dos diagramas de refracção relativos à zona marítima adjacente ao porto da Figueira da Foz.
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Year: 1992
Author(s): Covas, J. A.; Fortes, C. J. E. M.; Capitão, R.
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Base de dados de temporais existentes ocorridos em Portugal Continental.
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Year: 1992
Author(s): Capitão, R.
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Outro
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Relato da missão a Bruxelas (28 a 30 de Outubro de 1998) para participação na 10ª Reunião da Acção Concertada Added Value Services in VTMIS do Programa Comunitário de I&D TRANSPORTS . Relatório efe
N/A
Year: 1998
Number Pages:
3 p.
Author(s): Covas, J. A.
Editor: ******
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Short-term stochastic numerical and physical simulation of sea waves - Proposta de Projecto de Investigação apresentada ao Programa PRAXIS XXI, na área científica de Engenharia Civil
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Year: 1998
Number Pages:
53 p.
Author(s): Capitão, R.; Pires Silva, A.; Medina, J. R.; Carvalho, M. M.
Editor: ******
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Transformações Não-Lineares de Ondas Marítimas em Zonas Costeiras - Proposta de Projecto de Investigação apresentada ao Programa PRAXIS XXI , na área científica de Engenharia Civil
N/A
Year: 1998
Number Pages:
50 p.
Author(s): Covas, J. A.; Fortes, C. J. E. M.
Editor: ******
Info
V Programa Quadro da União Europeia. Preparação da discussão dos Programas Específicos. Documento de trabalho da Comissão (COM (97) 553 Final). Grupo de Trabalho 6 Sustainable Mobility and Intermod
N/A
Year: 1998
Number Pages:
2 p.
Author(s): Covas, J. A.
Editor: ******
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Valores extremos da agitação marítima no Algarve - Proposta de Projecto de Investigação apresentado ao Programa de Intervenção nos Laboratórios do Estado (MCT-FCT), sub-projecto Valorização e Protec
N/A
Year: 1998
Number Pages:
11 p.
Author(s): Carvalho, M. M.; Capitão, R.
Editor: ******
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