A5061131819- Wind Energy Research and Development
- Wind and Air Flow Studies
- Advanced Numerical Methods in Computational Mathematics
- Meteorological Phenomena and Simulations
- Computational Fluid Dynamics and Aerodynamics
- Advanced Mathematical Modeling in Engineering
- Fluid Dynamics and Turbulent Flows
- Computational Geometry and Mesh Generation
- Plant Water Relations and Carbon Dynamics
- Composite Material Mechanics
- Remote Sensing and LiDAR Applications
- Aeolian processes and effects
- Computer Graphics and Visualization Techniques
- CO2 Sequestration and Geologic Interactions
- Wind Turbine Control Systems
- Combustion and flame dynamics
- Gas Dynamics and Kinetic Theory
- Heat Transfer Mechanisms
- Forest Management and Policy
- Magnetic confinement fusion research
- Nuclear reactor physics and engineering
- Aerospace, Electronics, Mathematical Modeling
- Vibration and Dynamic Analysis
- Forest Biomass Utilization and Management
- Superconducting Materials and Applications
Universitat Politècnica de Catalunya
2013-2022
Barcelona Supercomputing Center
2013-2022
International Center for Numerical Methods in Engineering
2011
Purpose The purpose of this paper is to describe a variational multiscale finite element approximation for the incompressible Navier‐Stokes equations using Boussinesq model thermal coupling. Design/methodology/approach main feature formulation, in contrast other stabilized methods, that subscales are considered as transient and orthogonal space. These solution differential equation time needs be integrated. Likewise, effect kept, both nonlinear convective terms momentum temperature and, if...
Abstract. This article describes a study in which modellers were challenged to compute the wind field at forested site with moderately complex topography. The task was model stationary conditions neutral stratification by using velocity measured 100 m metmast as only reference. Detailed maps of terrain elevation and forest densities provided inputs, derived from airborne laser scans (ALSs) resolution 10 × covering an area 50 km km, that closely match actual site. participants free apply...
Summary This work studies the implementation of wall modeling for large‐eddy simulation in a finite element context. It provides detailed description how approach used by volume and differences communities is adapted to The new as simple easy implement classical one, but it vastly superior results. In typical elements, mesh does not extend all way wall, stress evaluated at first grid point, based on velocity same point. Instead, we adopt commonly differences, where covers whole domain...
A new mesh generation process for wind farm modeling is presented together with a convergence and sizing analysis flow simulations. The generated meshes are tailored to simulate Atmospheric Boundary Layer (ABL) flows on complex terrains the turbines as actuator discs. mesher fully automatic and, given topography turbine characteristics (location, diameter hub height), it generates hybrid conformal discs refined upwind downstream. Moreover, presents smooth element size transitions across...
We present a Computational Fluid Dynamics (CFD) modeling strategy for onshore wind farms aimed at predicting and opti- mizing the production of using CFD model that includes meteorological data assimilation, complex terrain turbine effects. The involves solution Reynolds-Averaged Navier-Stokes (RANS) equations together with k-ɛ turbulence specially designed Atmospheric Boundary Layer (ABL). automatic meshing generation boundary conditions atmospheric layer shape entering flow. As integration...
We present a wind simulation framework for offshore and onshore farms. The involves an automatic hybrid high-quality mesh generation process, pre-processing to impose initial boundary conditions, solver the Reynolds Averaged Navier-Stokes (RANS) equations with two different turbulence models, modified standard k- model realizable in which we included Coriolis effects. Wind turbines are modeled as actuator discs. farm has been implemented Alya, in-house High Performance Computing (HPC)...
We propose a new automatic procedure to generate hybrid meshes simulate turbulent flows for wind farm design and management. In particular, numerical modeling of farms involves RANS simulation the Atmospheric Boundary Layer (ABL) flow turbines using actuator disc theory. Therefore, generated have fulfill several geometrical requirements answer different features. They must: capture topography features that can influence flow; boundary layer close terrain resolve ABL; be conformally adapted...
The New European Wind Atlas (NEWA), the largest project on wind resource assessment technology, has developed mesoscale-to-microscale atlas and site methodologies alongside a validation strategy that leverages data from large field experiments as well campaigns industry through formal verification process. A probabilistic approach, based multi-physics ensemble, provides means to quantify uncertainty associated mesoscale configuration. Offline meso-micro coupling been adopted provide modular...
Abstract Microscale computational fluid dynamics (CFD) models can be used for wind resource assessment on complex terrains. These generally assume neutral atmospheric stratification, an assumption that lead to inaccurate modeling results and large uncertainties at certain sites. We propose a methodology evaluation based unsteady Reynolds averaged Navier‐Stokes (URANS) simulations of diurnal cycles including the effect thermal stratification. Time‐dependent boundary conditions are generated...
Abstract The NEWA ALEX17 experiment was conducted with the objective of characterizing wind conditions upstream Alaiz Test Site for validation flow models. From intensive operational period, a case study has been selected Wakebench benchmark consisting four consecutive days relatively persistent winds from North. is centered around 118-m mast at site and six additional masts located along valley lee side ridge delimiting 8-km long area interest. follow-up GABLS3 diurnal cycle in flat terrain...
Abstract This paper presents a novel methodology for mesoscale‐to‐microscale downscaling of near‐surface wind fields. The model chain consists on the Weather Research and Forecast mesoscale Alya‐CFDWind microscale (assuming neutral stability). combines precomputed simulations with forecast using domain segmentation technique transfer functions. As result, downscaled field preserves pattern but, at same time, incorporates local subgrid terrain effects, particularly valleys channelling zones....
We present results of the GABLS3 model intercomparison benchmark revisited for wind energy applications. The case consists a diurnal cycle, measured at 200-m tall Cabauw tower in Netherlands, including nocturnal low-level jet. includes sensitivity analysis WRF simulations using two input meteorological databases and five planetary boundary-layer schemes. A reference set mesoscale tendencies is used to drive microscale RANS k- LES turbulence models. validation based on rotor-based quantities...
A summary of the initial results "NEWA Meso-Micro Challenge for Wind Resource Assessment" is presented. The objective this activity, conducted in context New European Atlas (NEWA) project, to establish a process evaluation meso-micro methodologies wind resource and turbine site suitability assessment. hierarchy that rely on coupling mesoscale microscale models evaluated as tradeoff between accuracy computational cost terms relevant conditions siting such annual energy production, turbulence...
This work presents a new methodology for the interpolation and extrapolation of wind power generated by each turbine in farm at different speeds given direction, running only three RANS-CFD simulations, two with one without turbines. The turbines are modeled as uniformly loaded actuator discs an adaptation wake interaction cases. Three RANS turbulence models used, standard k-ε, k-ε-fP realizable k-ε model modified to account Coriolis forces appropriate coefficients simulation ABL flows....
Purpose The purpose of this paper is to present a finite element approximation the low Mach number equations coupled with radiative account for heat transfer. For high-temperature flows coupling can have strong effects on temperature and velocity fields.
We present a novel meshing and simulation approach for wind farms, featuring realignment mesh adaptation. The turbines are modeled with actuator discs, which discretized by means of an adaptation process to represent level set function. level-set-based framework is combined cycle capture both the solution discs. In addition, we devise turbine takes into account actual flow in disc configuration. Several results presented highlight features approach. First, adaptive validated, fulfilling...