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Nikolaos Skliris, Robert Marsh, Meric Srokosz, Yevgeny Aksenov, Stefanie Rynders and Nicolas Fournier
The fast development of the offshore energy industry becomes an essential component of resilient economies in most of the countries around the North Sea, addressing an increasing demand for cost-efficient and environmentally safe energy sources. Offshore...
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Abdullah Khan, Imran Shah, Shahid Aziz, Muhammad Waqas, Uzair Khaleeq uz Zaman and Dong-Won Jung
The bullet head plays a principal role in the modern enlargement of an efficient bullet. A bullet?s main design parameters depend upon the lift and drag forces acting on the head. The factors in a bullet?s shape design that affect bullets? lift and drag ...
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Qin Liu, Zhe Wang, Ning Zhang, Hongyu Zhao, Lei Liu, Kunpeng Huang and Xuguang Chen
The local scour around offshore pile foundations often seriously affects the normal operation of offshore wind power. The most widely used numerical simulation method in the study of local scour is the Euler two-fluid model (TFM). However, the contact ef...
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Yuting Zhai, Haisheng Zhao, Xin Li and Wei Shi
In this study, a novel large-scale barge-type floating offshore wind turbine with an aquaculture cage (LSBT-FOWT-AC) in a water depth of 100 m is designed through fully coupled analysis using the SESAM tool to support the Technical University of Denmark ...
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Lixin Wang, Shang Tai, Ting Yue, Hailiang Liu, Yanling Wang and Chen Bu
The wind tunnel virtual flight test realizes the dynamic semi-free flight of the model in the wind tunnel through the deflections of the control surface and uses the test data to identify the aerodynamic derivatives. The difference in dynamics between th...
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Kun Du and Bo Chen
Wind tunnel tests and large eddy simulations were conducted to investigate the dependency of wind forces and flow patterns on the spacing (S) for three tandem prisms with a small height?width ratio H/W = 0.4. At the spacing ratio S/W = 0.7, mean and root...
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Chaoqun Wang, Xugang Hua, Zhiwen Huang and Qing Wen
Much work has been devoted to the investigation and understanding of the flow-induced vibrations of twin cylinders vibrating individually (e.g., vortex-induced vibration and wake-induced galloping), but little has been devoted to coupled twin cylinders w...
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Róbert-Zoltán Szász, Alexandre Leroyer and Johan Revstedt
Ice throw is a significant risk factor in the vicinity of wind turbines located in cold climate areas. We present a method to estimate the ice chunk trajectories. First, similar to the common practice, only translation is accounted for and the object tra...
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Lance W. Traub and Mashaan P. Kaula
One of the most commonly implemented devices for stall control on wings and airfoils is a leading-edge slat. While functioning of slats at high Reynolds number is well documented, this is not the case at the low Reynolds numbers common for small unmanned...
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Wenjie Kong, Hao Dong, Jie Wu, Yidi Zhao and Zhou Jin
Porous media has potential applications in fluid machinery and in aerospace science and engineering due to its excellent drag-reduction properties. We carried out experimental time-resolved particle image velocimetry (TR-PIV) research, laying porous medi...
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Bo Wu, Jianting Zhou, Jingzhou Xin, Hong Zhang, Liangliang Zhang and Xianyi Yang
In the present study, multiple-fan active control wind tunnel tests are conducted to investigate the aerodynamic forces on a 5:1 rectangular cylinder in sinusoidal streamwise winds with different angles of attack (AoA). The effects of the frequency, ampl...
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Matej Majeric, Nina Verdel, Jan Ogrin, Hans-Christer Holmberg and Matej Supej
Aerodynamic drag is a major cause of energy losses during alpine ski racing. Here we developed two models for monitoring the aerodynamic drag on elite alpine skiers in the technical disciplines. While 10 skiers assumed standard positions (high, middle, t...
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Oleg A. Druzhinin and Wu-Ting Tsai
This paper presents an algorithm for numerical modeling of bubble dispersion occurring in the near-surface layer of the upper ocean under the action of non-breaking two-dimensional (2D) surface waves. The algorithm is based on a Eulerian-Lagrangian appro...
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Joseph Kim, Enda Murphy, Ioan Nistor, Sean Ferguson and Mitchel Provan
A numerical study was conducted to characterize the probability and intensity of storm surge hazards in Canada?s western Arctic. The utility of the European Centre for Medium-Range Weather Forecasts Reanalysis 5th Generation (ERA5) dataset to force numer...
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Zhenyu Liu, Zhen Guo, Yuzhe Dou and Fanyu Zeng
Most offshore wind turbines are installed in shallow water and exposed to breaking waves. Previous numerical studies focusing on breaking wave forces generally ignored the seabed permeability. In this paper, a numerical model based on Volume-Averaged Rey...
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Min-Jae Oh, Seung-Ho Ham and Namkug Ku
For their mooring on the sea, ships are equipped with mooring utilities such as anchors, anchor chains, and winches. To determine the specifications of these equipment, the equipment number of each ship must be calculated, and the formula used for calcul...
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Sidaard Gunasekaran and Daniel Curry
Changes in the amount and the distribution of mean and turbulent quantities in the free shear layer wake of a 2D National Advisory Committee for Aeronautics (NACA) 0012 airfoil and an AR 4 NACA 0012 wing with passive segmented rigid trailing edge (TE) ex...
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Sidaard Gunasekaran and Daniel Curry
Changes in the amount and the distribution of mean and turbulent quantities in the free shear layer wake of a 2D National Advisory Committee for Aeronautics (NACA) 0012 airfoil and an AR 4 NACA 0012 wing with passive segmented rigid trailing edge (TE) ex...
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Hermann Knaus, Martin Hofsäß, Alexander Rautenberg and Jens Bange
A model for the simulation of wind flow in complex terrain is presented based on the Reynolds averaged Navier?Stokes (RANS) equations. For the description of turbulence, the standard k-e, the renormalization group (RNG) k-e, and a Reynolds stress turbule...
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Claire Sarrat, Sébastien Aubry, Thomas Chaboud and Christine Lac
Local air quality is a major concern for the population regularly exposed to high levels of air pollution. Due mainly to its aircraft engine activities during taxiing and take-off, the airport is often submitted to heterogeneous but important concentrati...
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