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When fossil fuel supplies can no longer be replenished and hence fossil fuel power generation becomes outdated, wind energy will become a vital solution to the impending energy crisis. A horizontal-axis wind turbine is a widely used…

流体动力学 · 物理学 2024-09-24 Mahadi Hasan Shanto , Sayed Tanvir Ahmed , A K M Ashikuzzaman

Unmanned aerial vehicles (UAVs), especially fixed-wing ones that withstand strong winds, have great potential for oceanic exploration and research. This paper studies a UAV-aided maritime data collection system with a fixed-wing UAV…

信息论 · 计算机科学 2021-12-28 Yifan Zhang , Jiangbin Lyu , Liqun Fu

A convex formulation is proposed for optimal energy management in aircraft with hybrid propulsion systems consisting of gas turbine and electric motor components. By combining a point-mass aircraft dynamical model with models of electrical…

最优化与控制 · 数学 2020-05-06 Martin Doff-Sotta , Mark Cannon , Marko Bacic

Road vehicles contribute to significant levels of greenhouse gas (GHG) emissions. A potential strategy for improving their aerodynamic efficiency and reducing emissions is through active adaptation of their exterior shapes to the…

机器人学 · 计算机科学 2026-01-06 Peng Zhang , Branson Blaylock

Aerodynamic design optimisation plays a crucial role in improving the performance and efficiency of automotive vehicles. This paper presents a novel approach for aerodynamic optimisation in car design using deep reinforcement learning…

机器人学 · 计算机科学 2024-05-21 Jignesh Patel , Yannis Spyridis , Vasileios Argyriou

We report on experimental and numerical studies aimed at developing an improved paradigm to model animal flight at moderate Reynolds numbers ($ 20 k - 50k $). A series of experiments were performed to characterize the behaviors of…

流体动力学 · 物理学 2025-03-21 Yunxing Su , Xiaozhou Fan , Kyohei Onoue , Hamid Vejdani , Kenneth Breuer

This paper proposes a novel method for prevention of the increasing oscillation of an aircraft wing under the flexural torsion flutter. The paper introduces the novel multi-agent method for control of an aircraft wing, assuming that the…

信息论 · 计算机科学 2020-12-09 Dmitry S. Shalymov , Oleg N. Granichin , Zeev Volkovich , Gerhard-Wilhelm Weber

This study investigates the dynamics of passively morphing foils under accelerated plunging, establishing mechanistic links between transient kinematics, structural compliance, and aerodynamic performance. Two-way coupled simulations are…

流体动力学 · 物理学 2026-03-31 Hibah Saddal , Lucky Babu Jayswal , Chandan Bose

Efficiency increase is seen as one of the main goals in any energy converting device. In this direction, the present study aims to demonstrate that large-scale wind turbines can still be improved in order to generate larger amounts of…

流体动力学 · 物理学 2024-07-31 Ahmad Nabhani , Navid M Tousi , Marti Coma , Gabriel Bugeda , Josep M Bergada

Birds rely on active high-acceleration morphing and flapping to navigate complex airflows, but they can also maintain stable fixed-wing postures under persistent atmospheric disturbances. Here, we show that avian wings exhibit aerodynamic…

流体动力学 · 物理学 2025-07-22 Lunbing Chen , Suyang Qin , Jinpeng Huang , Yufei Yin , Yang Xiang , Hong Liu

This study investigates the aerodynamic performance of an Audi A4 sedan using CFD analysis. A 3D model was developed in SolidWorks and validated against DrivAer Notchback wind-tunnel data, showing only a 3.25 percent deviation in drag…

流体动力学 · 物理学 2025-09-04 Mahdi Kheirkhah , Ehsan Roohi , Mahmoud Pasandidehfard

In this work, we present the results of a ship propeller design optimization campaign carried out in the framework of the research project PRELICA, funded by the Friuli Venezia Giulia regional government. The main idea of this work is to…

计算工程、金融与科学 · 计算机科学 2019-05-24 Andrea Mola , Marco Tezzele , Mahmoud Gadalla , Federica Valdenazzi , Davide Grassi , Roberta Padovan , Gianluigi Rozza

In this paper I present the aerodynamic optimization of the angle of attack of MQ-9 Reaper wings under turbulent airflow conditions. The background discusses the evolution of UAVs such as the Hunter and their usages for different tasks,…

流体动力学 · 物理学 2022-10-19 Ryan Kim

Predicting of airfoil aerodynamic performance is a key part of aircraft design optimization, but the traditional methods (such as wind tunnel test and CFD simulation) have the problems of high cost and low efficiency, and the existing…

神经与进化计算 · 计算机科学 2025-06-10 MaolinYang , Yaohui Wang , Pingyu Jiang

Unmanned aerial vehicles (UAVs), especially fixed-wing ones that withstand strong winds, have great potential for oceanic exploration and research. This paper studies a UAV-aided maritime data collection system with a fixed-wing UAV…

信号处理 · 电气工程与系统科学 2021-11-08 Yifan Zhang , Jiangbin Lyu , Liqun Fu

This study presents a real-time guidance strategy for an unmanned aerial vehicles (UAVs) that can be used to enhance their flight endurance by utilizing {\sl insitu} measurements of wind speeds and wind gradients. In these strategies,…

最优化与控制 · 数学 2015-01-30 Kamran Turkoglu

Aerodynamic drag on flat-backed vehicles like vans and trucks is dominated by a low-pressure wake, whose control is critical for reducing fuel consumption. This paper presents an experimental study at $Re_W\approx 78,300$ on active flow…

Cycloidal propellers are known for their omnidirectional vectored thrust, enabling smooth transitions between hovering and forward flight, making them ideal for unmanned aerial vehicles (UAVs) and electric vertical take-off and landing…

流体动力学 · 物理学 2026-01-01 Han Zhen Li , Yu Hu , Lai Zhang , Hong Bo Sun , Xu Chao Zhang

This paper presents real-time guidance strategies for unmanned aerial vehicles (UAVs) that can be used to enhance their flight endurance by utilizing {\sl insitu} measurements of wind speeds and wind gradients. In these strategies, periodic…

最优化与控制 · 数学 2019-07-17 Kamran Turkoglu

The autonomous operation of flexible-wing aircraft is technically challenging and has never been presented within literature. The lack of an exact modeling framework is due to the complex nonlinear aerodynamic relationships governed by the…

系统与控制 · 电气工程与系统科学 2021-03-31 Mohammed Abouheaf , Nathaniel Mailhot , Wail Gueaieb , Davide Spinello