Results 21 to 30 of about 475 (186)

The structure of Kármán vortex streets in the atmospheric boundary layer derived from large eddy simulation

Meteorologische Zeitschrift, 2012
Kármán vortex streets generated in the wake of an idealized island are studied using large eddy simulation (LES). Simulations were carried out under conditions of a dry convective boundary layer, capped by an inversion below the island top.
Rieke Heinze, Siegfried Raasch, Dieter Etling   +2 more
doaj   +1 more source

HY-1C/D Reveals the Chlorophyll-a Concentration Distribution Details in the Intensive Islands’ Waters and Its Consistency with the Distribution of Fish Spawning Ground

Remote Sensing, 2022
Chlorophyll-a (Chl-a) change details derived from HY-1C/D images in the waters of the Zhoushan archipelago were analyzed. A new Chl-a inverse model was built based on the relationship between the in situ Chl-a and the combination of red, blue and green ...
Lina Cai, Menghan Yu, Xiaojun Yan, Yongdong Zhou, Songyu Chen   +4 more
doaj   +1 more source

Influence of attack angle on vortex-induced vibration and energy harvesting of two cylinders in side-by-side arrangement

Advances in Mechanical Engineering, 2019
The vortex-induced vibration and energy harvesting of two cylinders in side-by-side arrangement with different attack angles are numerically investigated using two-dimensional unsteady Reynolds-Averaged Navier–Stokes simulations.
Li Zhang, Xinru Mao, Lin Ding
doaj   +1 more source

Influence of Urban Road Green Belts on Pedestrian-Level Wind in Height-Asymmetric Street Canyons

Atmosphere, 2022
This study was conducted to examine the effect on airflow of the shape of an urban road green belt in an asymmetrical street canyon. In this paper, the airflow field at pedestrian height in an asymmetrical street with different building height ratios ...
Fanhao Zeng, David Simeja, Xinyi Ren, Zhonggou Chen, Hanyi Zhao   +4 more
doaj   +1 more source

Enhancing Kármán Vortex Street Detection via Auxiliary Networks Incorporating Key Atmospheric Parameters

Atmosphere
Kármán vortex streets are quintessential phenomena in fluid dynamics, manifested by the periodic shedding of vortices as airflow interacts with obstacles.
Yihan Zhang, Zhi Zhang, Qiao Su, Chaoyue Wu, Yuqi Zhang, Daoyi Chen   +5 more
doaj   +1 more source

Axial Flow in a Vortex in Karman Vortex Street.

Journal of the Japan Society for Aeronautical and Space Sciences, 1996
The vortex filaments in a Karman vortex street are usually not parallel to the axis of a circular cylinder perpendicular to a uniform flow in a low speed wind tunnel, but incline to the axis of the cylinder. The axial flow to the upstream direction in a vortex was observed by means of flow visualization in each vortex of the Karman vortex street.
OHKURA, Nobuyuki, HAYAFUJI, Hidetoshi, OKUDE, Muneshige   +2 more
openaire   +1 more source

Improving the Robustness of Visual Teach‐and‐Repeat Navigation Using Drift Error Correction and Event‐Based Vision for Low‐Light Environments

Advanced Robotics Research, EarlyView.
Visual teach‐and‐repeat (VTR) navigation allows robots to learn and follow routes without building a full metric map. We show that navigation accuracy for VTR can be improved by integrating a topological map with error‐drift correction based on stereo vision.
Fuhai Ling, Ze Huang, Tony J. Prescott
wiley   +1 more source

Mechanism of aerodynamic force generation concerning train vibration in tunnel (LES of large-scale flow structure around simplified train model)

Nihon Kikai Gakkai ronbunshu, 2020
To clarify the mechanisms underlying airflow-induced vibrations of high-speed trains running through tunnels, large-eddy simulation of a large-scale flow structure around a simplified 6-car train model was conducted.
Koji NAKADE, Yutaka SAKUMA, Takeo KAJISHIMA   +2 more
doaj   +1 more source

Learning‐Based Soft Robotic Grasping: Recent Progress and Remaining Challenges

Advanced Robotics Research, EarlyView.
This review analyzes learning‐based soft robotic grasping from a pipeline‐oriented perspective, encompassing soft gripper design, multimodal sensing, and learning‐based planning and control. It surveys key neural network architectures and benchmark datasets and identifies critical challenges such as sim‐to‐real transfer, generalization, and continual ...
Arnab Majumder, Jelizaveta Konstantinova, Graham Deacon, Kaspar Althoefer   +3 more
wiley   +1 more source

Large‐Area Noise‐Resilient Multiplexing Triboelectric Biomechanical Sensing on Clothing for High‐Precision Full‐Body Motion Capture in Wearables

Advanced Science, EarlyView.
A large‐area, noise‐resilient multiplexed triboelectric sensing garment based on a multilayer shielded architecture and SnS2 nanoflower‐engineered hybrid materials enables interference‐suppressed, high‐fidelity full‐body motion tracking, achieving 0.13% signal misrecognition, 57 dB electromagnetic noise attenuation, and >1.5 N threshold force, while ...
Beibei Shao, Ming‐Han Lu, Wei‐Chen Peng, Wei‐Chun Yang, Yi‐Ting Chen, Jiun‐Wei Fong, Tzu‐Ching Lu, Tai‐Chen Wu, Zhi‐Xian Yan, Kai‐Yuan Hsiao, Jiann‐Yeu Chen, Ming‐Yen Lu, Heng‐Jui Liu, Ruiyuan Liu, Ying‐Chih Lai   +14 more
wiley   +1 more source