Article
Psychology, Biological
Nao Ota, Manfred Gahr
Summary: The study demonstrates that in blue-capped cordon-bleus, dance displays can influence song patterns and the responses of paired partners. Songs with dance displays were longer and more stereotyped, and paired partners showed more gestural responses to these songs. This suggests that the multimodal display of blue-capped cordon-bleus may draw attention to the physical abilities of the performer.
Article
Engineering, Civil
Yannick Jooss, Eivind Berg Ronning, R. Jason Hearst, Tania Bracchi
Summary: This study investigates the ideal position for a roof mounted wind turbine through experimental research. The findings suggest that placing the turbine in the central position of the building maximizes power output, and positioning it higher above the roof improves performance for wind normal to the faces of the buildings.
JOURNAL OF WIND ENGINEERING AND INDUSTRIAL AERODYNAMICS
(2022)
Article
Engineering, Aerospace
D. I. Greenwell
Summary: Wind tunnels play a crucial role in the design and development of flight vehicles, but aerospace engineering graduates often lack practical experience in industrial experimental work, especially at high speeds, due to inadequate reference material. This paper provides an overview of the current and future usage of transonic industrial wind tunnels, aiming to help newcomers transition from university research projects to commercial projects in larger industrial facilities. Additionally, the review contradicts the belief that wind tunnels are declining, as there is a global renaissance in industrial transonic wind tunnel development, with increasing numbers, investments, capabilities, and facility utilization.
AERONAUTICAL JOURNAL
(2022)
Article
Engineering, Civil
Ignacio Franco, Alejandro Gutierrez, Jose Cataldo
Summary: This study presents the results obtained from a wind tunnel testing facility, where measurements were conducted on a four-jet-in-crossflow model to analyze the interaction between the jets and a boundary layer crossflow. The study showed that the performance of the model is comparable to currently reported wind barriers.
JOURNAL OF WIND ENGINEERING AND INDUSTRIAL AERODYNAMICS
(2022)
Article
Green & Sustainable Science & Technology
Ingrid Neunaber, Michael Hoelling, Jonathan Whale, Joachim Peinke
Summary: An experimental wind tunnel study compared the turbulence in the wakes of a static actuator disc and a model wind turbine, finding that both models have similar properties in the far wake, with turbulence in the central wake being independent of the inflow conditions. Both models filter larger scale intermittency in the far wake, and the turbine generates its own turbulence with strong features of homogeneous, isotropic turbulence.
Article
Acoustics
Yannian Yang, Yu Liu, Rui Liu, Chao Shen, Pikai Zhang, Renke Wei, Xiaomin Liu, Pengwei Xu
Summary: The aeroacoustic wind tunnel at SUSTech is a new facility for studies on sound generation mechanisms, noise reduction methods, and aerodynamic designs, with high-quality flow field and low background noise levels. The design methodology for wind-tunnel major components is detailed, and validation tests of flow quality and aeroacoustic performance are conducted. A benchmark test of airfoil tonal noise is performed using microphone and Particle Image Velocimetry measurements, showing consistent features with existing experimental observations.
Article
Environmental Sciences
A. Cauteruccio, E. Brambilla, M. Stagnaro, L. G. Lanza, D. Rocchi
Summary: A physical full-scale experimental setup was designed and implemented in a wind tunnel to reproduce rainfall measurements in windy conditions. Through airflow simulations, image processing, and Particle Image Velocimetry, the study revealed the physical reasons behind wind-induced undercatch of precipitation gauges and validated the particle tracking model in terms of simulated and observed trajectories.
WATER RESOURCES RESEARCH
(2021)
Article
Energy & Fuels
Alois Peter Schaffarczyk, Andreas Momber, Volkmar Stenzel
Summary: In a large acoustic wind tunnel, a well-known 30% thick wind turbine aerofoil was partially equipped with riblets, resulting in a reduction of drag by up to 10% and an increase in lift-to-drag ratio by up to 30%.
Article
Chemistry, Analytical
Ozgun Ozer, Mark Kenneth Quinn
Summary: Particle image velocimetry (PIV) is an important tool for optical flow diagnostics, but its requirement for optical access limits its application in closed cavities and confined spaces. To overcome this limitation, a miniaturized autocorrelation-based stereo PIV system was developed and tested. The miniature system showed the ability to measure inside confined spaces and cavities and can be mounted on board models and vehicles.
Article
Green & Sustainable Science & Technology
Kamran Shirzadeh Ajirlo, Pooyan Hashemi Tari, Kobra Gharali, Majid Zandi
Summary: This study presents the development of a micro wind turbine simulator for testing and assessing the design and performance of micro horizontal axis wind turbines. The simulator showed satisfactory response in reproducing the turbine characteristics under various conditions, particularly when the tip speed ratio is close to the design value. An innovative feature of the simulator is the fan mounted within a guiding slide to enable changing the yaw angle while maintaining the same distance from the turbine, compared with experimental results under different conditions.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2021)
Article
Engineering, Multidisciplinary
Ashraf Ramadan, Mohamed Ebeed, Salah Kamel, Emad M. Ahmed, Marcos Tostado-Veliz
Summary: This paper proposes an efficient and recent technique for optimal sizing and placement of Renewable Distributed Generators (RDGs) in distribution systems, taking into account the uncertainties of loading and RDGs output power. Through simulations and validations, the effectiveness of the proposed technique is demonstrated.
AIN SHAMS ENGINEERING JOURNAL
(2023)
Article
Energy & Fuels
Veenus Kansal, J. S. Dhillon
Summary: This paper proposes an improved artificial hummingbird algorithm (AAHA) that combines simplex search strategy (SSS) to solve the coordinated wind-solar-thermal generation scheduling problem. The AAHA simulates the foraging behavior of hummingbirds and enhances the algorithm's performance by improving the exploitation mechanism. Renewable energy sources are also considered to reduce pollutant emissions and fuel costs.
Article
Behavioral Sciences
Adam M. Bent, Thomas C. Ings, Sophie L. Mowles
Summary: Animals use acoustic courtship displays to attract mates, but anthropogenic noise and white noise can disrupt their reproductive success by affecting signal production and mating quantity.
Article
Engineering, Civil
Tarek Ghazal, Ahmed Elshaer, Haitham Aboshosha
Summary: Due to climate change, the number of extreme wind events is increasing in Canada, making storm shelters a popular life-saving solution. However, current design codes lack specific guidelines for smaller scale storm shelters. This study compares North American design codes with detailed wind simulations conducted through wind tunnel testing, and analyzes critical zones that may exceed code-specified values.
ENGINEERING STRUCTURES
(2022)
Article
Energy & Fuels
Emil Krog Kruse, Christian Bak, Anders Smaerup Olsen
Summary: The study found that increasing zigzag tape heights reduces maximum lift, while drag is less affected by zigzag tape height. Different sandpaper types have almost the same impact on reducing maximum lift, but drag increases with coarseness.