A5037016043- Wind Energy Research and Development
- Wind and Air Flow Studies
- Fluid Dynamics and Vibration Analysis
- Aerodynamics and Fluid Dynamics Research
- Fluid Dynamics and Turbulent Flows
- Computational Fluid Dynamics and Aerodynamics
- Turbomachinery Performance and Optimization
- Aerodynamics and Acoustics in Jet Flows
- Cavitation Phenomena in Pumps
- Fluid dynamics and aerodynamics studies
- Vibration and Dynamic Analysis
- Aerospace Engineering and Control Systems
- Solar Radiation and Photovoltaics
- Magnetic Bearings and Levitation Dynamics
- Microgrid Control and Optimization
- Aerospace and Aviation Technology
- Power Systems and Renewable Energy
- Geotechnical and construction materials studies
- Advanced Sensor and Control Systems
- Process Optimization and Integration
- Power System Optimization and Stability
- Icing and De-icing Technologies
- Advanced Algorithms and Applications
- Energy Load and Power Forecasting
- Wind Turbine Control Systems
University of Stuttgart
2016-2023
DNV (United Kingdom)
2022-2023
European Academy of Technology and Innovation Assessment
2022
WindEurope
2022
Sepuluh Nopember Institute of Technology
2017-2018
Institut Teknologi Medan
2012
In the analysis of aerodynamic performance wind turbines, need to account for effects rotation is important as engineering models often failed predict these phenomena. Investigations are carried out by employing an unsteady computational fluid dynamics (CFD) approach on a generic 10 MW AVATAR (Advanced Aerodynamic Tools Large Rotors) blade. The focus studies evaluation 3D effect characteristics thick airfoils in root area. For preliminary studies, 2D simulations constructing blade and...
A symmetrical NACA 0018 airfoil is often used in such applications as small-to-medium scale vertical-axis wind turbines and aerial vehicles. review of the literature indicates a large gap experimental studies this at low moderate Reynolds numbers previous century. This has limited potential development classical turbulence models, which range predict lift coefficients with insufficiently accurate results comparison to contemporary studies. Therefore, paper validates aerodynamic performance...
Abstract. Within the framework of fourth phase International Energy Agency (IEA) Wind Task 29, a large comparison exercise between measurements and aeroelastic simulations has been carried out featuring three simulation cases in axial, sheared yawed inflow conditions. Results were obtained from more than 19 tools originating 12 institutes, ranging fidelity blade element momentum (BEM) to computational fluid dynamics (CFDs) compared state-of-the-art field 2 MW DanAero turbine. More 15...
Abstract. While modern wind turbines have become by far the largest rotating machines on Earth with further upscaling planned for future, a renewed interest in small (SWTs) is fostering energy transition and smart grid development. Small traditionally not received same level of aerodynamic refinement as their larger counterparts, resulting lower efficiency, capacity factors, therefore higher cost energy. In an effort to reduce this gap, research programs are developing worldwide. With...
To enable the fast growth of floating offshore wind industry, simulation models must be validated with experimental data. Floating model-scale experiments in wind–wave facilities have been performed over last two decades varying levels fidelity and limitations. However, turbine controls these considered only limited control strategies implementations. allow for co-design, this research focuses on implementing experimentally validating more advanced actions a basin 1:70-scale model...
Present studies are specifically aimed at investigating the sensitivity of different dynamic stall models when exposed to various excitation frequencies. The investigations targeted blade edgewise vibrations. This is carried out on a modified version IEA 15 MW reference wind turbine employing design tool, DNV Bladed. State-of-the-art for applications, such as ye model, Beddoes–Leishman (BL) model and newly developed IAG evaluated. beginning research work starts by evaluating rigid section...
The present studies deliver the computational investigations of a 10 MW turbine with diameter 205.8 m developed within framework AVATAR (Advanced Aerodynamic Tools for Large Rotors) project. simulations were carried out using two methods different fidelity levels, namely fluid dynamics (CFD) and blade element momentum (BEM) approaches. For this purpose, new BEM code B-GO was employing several correction terms three polar spatial interpolation options. Several flow conditions considered in...
Abstract The flow physics of high solidity vertical axis wind turbines (VAWTs) is influenced by the dynamic stall effects. present study aimed at investigating effects airfoil thickness on unsteady characteristics VAWTs. Seven different national advisory committee for aeronautics (NACA) airfoils (0008, 0012, 0018, 0021, 0025, 0030, 0040) are investigated. A fidelity computational fluid dynamics (CFD) approach used to examine load and in detail. Before undertaken, CFD simulation validated...
The purpose of this paper is to estimate the H-Darrieus wind turbine aerodynamic performance, blade loads, and velocity profiles downstream behind rotor. model based on rotor designed by McDonnell Aircraft Company. proposed here consists three fixed straight blades; in future, planned be developed with controlled blades. study was conducted using unsteady Reynolds averaged Navier–Stokes (URANS) approach k-ω shear stress transport (SST) turbulence model. numerical two-dimensional verified two...
Data driven approaches are utilized for optimal sensor placement as well velocity prediction of wind turbine wakes. In this work, several methods investigated suitability in the clustering analysis and predicting time history flow field. The studies start by applying a proper orthogonal decomposition (POD) technique to extract dynamics flow. This is followed evaluations different hyperparameters machine learning algorithms their impacts on accuracy. Two test cases considered: (1) wake...
Computational fluid dynamics (CFD) studies are carried out on a two-bladed vertical axis wind turbine operating at speed of 8 m/s for tip ratios (λ) 0.50–3.0. The blade is the NACA0021 airfoil with chord length 0.265 m and rotor radius 1 m. Basic sensitivity various time step sizes out. results validated against available measurement data from literature. Excellent agreement obtained small λ up to optimum condition. For higher ratios, two-dimensional CFD computations predict than tunnel...
Abstract. Robust and accurate dynamic stall modeling remains one of the most difficult tasks in wind turbine load calculations despite its long research effort past. In present paper, a new second-order model is developed with main aim to higher harmonics vortex shedding while retaining robustness for various flow conditions airfoils. Comprehensive investigations tests are performed at conditions. The occurring physical characteristics each case discussed evaluated studies. improved also...