A5074390697- Coastal and Marine Dynamics
- Wave and Wind Energy Systems
- Ocean Waves and Remote Sensing
- Power Line Communications and Noise
- Advanced Fiber Optic Sensors
- Wind and Air Flow Studies
- Fluid Dynamics and Vibration Analysis
- Fluid Dynamics Simulations and Interactions
- Oceanographic and Atmospheric Processes
- Geotechnical Engineering and Underground Structures
- Vibration and Dynamic Analysis
- Wind Energy Research and Development
- Radio Wave Propagation Studies
- Building Energy and Comfort Optimization
- Tropical and Extratropical Cyclones Research
- Energy Harvesting in Wireless Networks
- Adsorption and Cooling Systems
- Phase Change Materials Research
- Urban Arborization and Environmental Studies
- Earthquake and Tsunami Effects
- Seismic Waves and Analysis
- Ship Hydrodynamics and Maneuverability
- Innovations in Concrete and Construction Materials
- Geothermal Energy Systems and Applications
- Material Properties and Processing
Universidade Nova de Lisboa
2008-2024
University of Lisbon
2008-2021
Instituto Politécnico de Lisboa
2009
Instituto Superior Técnico
2009
This paper presents a methodology that allows the numerical simulation of realistic sea waves, called WaveMIMO methodology, which is based on imposition transient discrete data as prescribed velocity finite volume computational model developed in Fluent software. These are obtained by using spectral wave TOMAWAC, where spectrum converted into series free surface elevations treated and processed propagation velocities horizontal (x) vertical (z) directions. The imposed boundary conditions...
This article addresses the theoretical effect of using geothermal boreholes enhanced with macro-encapsulated phase change materials (PCM) employed a ground sourced heat pump (GSHP). The aim being improvement performance through soil temperature stabilisation, taking advantage from PCM inherent property changing at constant temperature, that can be matched surrounding soil, contributing as well to increase energy storage capacity underground. numeric work studied different thermal parameters...
The present work aims to develop a computational model investigating turbulent flows in problem that simulates an oscillating water column device (OWC) considering Savonius turbine the air duct region. Incompressible, two-dimensional, unsteady, and were considered for three different configurations: (1) free inserted long large channel verification/validation of model, (2) enclosure domain mimics OWC with constant velocity at its inlet, (3) same as Case 2 sinusoidal imposed inlet. A dynamic...
The knowledge of water wave characteristics (generation, propagation, transformation and breaking) is fundamental for hydrodynamic studies the design ocean, coastal port structures. In addition to small-scale experimental studies, use numerical models also a very important tool in studies. To have reliable results proper validation required. main objective this paper compare different methods generation absorption flume, find what most suited simulate non-breaking regular propagation...
When designing structures to the wind action, variation of mean velocity and turbulence parameters with height above ground must be taken into account. This paper presents numerical simulation results atmospheric boundary layer (ABL) airflows, in a domain no obstacles cubic building. The flow characterization, obtained FLUENT CFD code were performed using <TEX>${\kappa}-{\varepsilon}$</TEX> model MMK modification. intensity profiles inflow defined accordance Eurocode 1.4, for different...
The motion of the free-surface inside a surface-piercing vertical cylindrical tube can be seen as simplified approximation an oscillating-water-column ocean-wave energy-converter (OWC-OWEC). In present work IHFOAM code, which solves Reynolds-averaged Navier-Stokes (RANS) equations by finite-volume method using volume-of-fluid (VoF) technique, was used to simulate action regular wave on cylinder open atmosphere. this paper results obtained are compared with other numerical and experimental...
In this research, considering the air methodology, an axisymmetric model was developed, validated, and calibrated for numerical simulation of Oscillating Water Column (OWC) converter subjected to a realistic sea state, representative Cassino beach, in south Brazil. To do so, Finite Volume Method (FVM) used, through Fluent software (Version 18.1), airflow inside hydro-pneumatic chamber turbine duct OWC. Furthermore, influence geometric parameters on available power OWC evaluated Constructal...
The knowledge of wave transformation and breaking characteristics near coastline is essential for the nearshore hydrodynamics design coastal structures. This paper describes a wide range flume tests performed at National Laboratory Civil Engineering (LNEC), located in Lisbon (Portugal), which main objective was to study shoaling over set different gentle slopes several incident waves thus contribute better understand transformation.The experimental conditions, measurement equipment,...
This paper presents the application of OpenFOAM ® software package, using IHFoam/OlaFlow solver, in simulation water waves and air flow an OWC-WEC located on a breakwater, Mutriku power station north Spain. The numerical code solves transient Reynolds averaged Navier-Stokes (RANS) equations, Volume Fluid (VoF) technique to identify free surface. standard k - ε turbulence model was used evaluate Reynold stresses. Two geometries were considered: one with pneumatic chamber completely open...