Predicting terrain-induced wind turbulence for smokejumper parachute operations [PDF]
International Journal of Wildland FireBackground Terrain-induced turbulence is dangerous for smokejumpers parachuting into complex terrain and results in numerous serious accidents annually. Aims We quantify wind modelling system WindNinja’s ability to reproduce terrain ...
Natalie Wagenbrenner +3 more
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Effects of Terrain-Induced Turbulence on Wind Turbine Blade Fatigue Loads
Energy and Power Engineering, 2017 Recently, the issue has surfaced that the availability factors for wind farms built on complex terrain are lower than the originally projected values. In other words, problems have occurred such as extreme decreases in generation output, failures of components inside and outside wind turbines including yaw motors and yaw gears, and cracking on wind ...
Yasushi Kawashima, Takanori Uchida
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The Juneau Terrain-Induced Turbulence Alert System [PDF]
Bulletin of the American Meteorological Society, 2010 Abstract The Juneau, Alaska, airport vicinity experiences frequent episodes of moderate and severe turbulence, which affect arriving and departing air traffic. The Federal Aviation Administration funded the National Center for Atmospheric Research to develop a warning system, consisting of carefully placed anemometers and wind profilers,
Marcia K. Politovich +5 more
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Performance of LIDAR- and radar-based turbulence intensity measurement in comparison with anemometer-based turbulence intensity estimation based on aircraft data for a typical case of terrain-induced turbulence in association with a typhoon [PDF]
Journal of Zhejiang University SCIENCE A, 2013 The Hong Kong Observatory (HKO) provides low-level turbulence alerting service for the Hong Kong International Airport (HKIA) through the windshear and turbulence warning system (WTWS). In the WTWS, turbulence intensities along the flight paths of the airport are estimated based upon correlation equations established between the surface anemometer data
Pak Wai Chan, Y. F. Lee
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, 2023 This report is published as deliverable D6.3 of the LIKE project. It explores the modelling and measurement of turbulence as an aviation hazard, focusing on the importance of lidar technology to the subject. Turbulence is an essential parameter for airport activities, as it impacts the safety of passengers and aircraft, the planning of new airports ...
Joachim Reuder +6 more
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Open Journal of Fluid Dynamics, 2017 We have developed an LES (Large-Eddy Simulation) code called RIAM-COMPACT (Research Institute for Applied Mechanics, Kyushu University, Computational Prediction of Airflow over Complex Terrain). The analysis do-main of this numerical model extends from several meters to several kilometers.
Takanori Uchida
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Numerical Reproducibility of Terrain-induced Turbulence in Complex Terrain by Large-eddy Simulation (LES) Technique [PDF]
, 2018 In the present study, field observation wind data from the time of the wind turbine blade damage accident on Shiratakiyama Wind Farm were analyzed in detail. In parallel, high-resolution LES turbulence simulations were performed in order to examine the model’s ability to numerically reproduce terrain-induced turbulence.
Takanori Uchida
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Spatiotemporal evolution and physical mechanism analysis of boundary layer wind characteristics of typhoon Saola [PDF]
Scientific ReportsThis study investigated the spatiotemporal evolution of boundary-layer wind characteristics during Typhoon Saola over the Shenzhen and Hong Kong regions and its underlying physical mechanisms.
Jing Liang +5 more
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Wind tunnel measurement dataset of turbulent flow over two-dimensional ridges and three-dimensional hills with smooth and rough surfacesMendeley Data [PDF]
Data in BriefThis paper presents a high-spatiotemporal-resolution dataset of turbulent flows over two-dimensional (2D) ridges and three-dimensional (3D) hills with smooth and rough surfaces measured in a boundary-layer wind tunnel.
Takeshi Ishihara, Tong Zhou
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