Showing 1,261 - 1,280 results of 1,473 for search '"Airfoil"', query time: 0.09s Refine Results
  1. 1261

    Effect of Blade Pitch Angle on the Aerodynamic Characteristics of a Straight-bladed Vertical Axis Wind Turbine Based on Experiments and Simulations by Yanzhao Yang, Zhiping Guo, Qing Song, Yanfeng Zhang, Qing’an Li

    Published 2018-06-01
    “…In this paper, wind tunnel experiments and CFD simulations were performed at the Sb-VAWT to investigate the effect of different blade pitch angles on the pressure distribution on the blade surface, the torque coefficient, and the power coefficient. In this study, the airfoil type was NACA0021 with two blades. The Sb-VAWT had a rotor radius of 1.0 m with a spanwise length of 1.2 m. …”
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  2. 1262

    Development of a 3D Eulerian/Lagrangian Aircraft Icing Simulation Solver Based on OpenFOAM by Han Han, Zifei Yin, Yijun Ning, Hong Liu

    Published 2022-09-01
    “…Steady-state 3D Reynolds-averaged Navier-Stokes (RANS) equations are solved to provide the ensemble-averaged flow around the airfoil. Considering the multi-scale nature of droplet size distribution, and more importantly, to represent the less uniform nature of the Super-cooled Large Droplets (SLD), two droplet tracking methods are realized: the Eulerian method is used to track the small-size droplets (below 50 <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi mathvariant="sans-serif">μ</mi></semantics></math></inline-formula>m) for the sake of efficiency; the Lagrangian method with random sampling is used to track the large droplets (above 50 <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi mathvariant="sans-serif">μ</mi></semantics></math></inline-formula>m); the heat transfer of the surface overflow is solved on a virtual surface mesh; the ice accumulation is estimated via the Myers model; finally, the final ice shape is predicted by time marching. …”
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  3. 1263

    Surrogate Models for Performance Prediction of Axial Compressors Using through-Flow Approach by Xiaoxiong Wu, Bo Liu, Nathan Ricks, Ghader Ghorbaniasl

    Published 2019-12-01
    “…A group of experimental data considering a two-stage transonic compressor is used to generate the airfoils database for training the surrogate models. …”
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  4. 1264

    Numerical investigation of sand erosion rate in a horizontal axis wind turbine by A.E. Abu El-Maaty, H.K. Abdallah, M.A. Kotb, R. Ben-Mansour, E.S. Alatawi

    Published 2024-03-01
    “…Three-dimensional E216 airfoil blades of radius 0.5 m are established according to blade element momentum theory. …”
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  5. 1265

    Design and Implementation of an IoT-Oriented Strain Smart Sensor with Exploratory Capabilities on Energy Harvesting and Magnetorheological Elastomer Transducers by Jorge de-J. Lozoya-Santos, L. C. Félix-Herrán, Juan C. Tudón-Martínez, Adriana Vargas-Martinez, Ricardo A. Ramirez-Mendoza

    Published 2020-06-01
    “…The reported experiments included cloud-computing capabilities towards a potential Internet of Things application of the smart sensor in the context of monitoring automotive-chassis vibrations and airfoil damage for further analysis and diagnostics, and in general structural-health-monitoring applications.…”
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  6. 1266

    Comprehensive Analysis of the Impact of the Icing of Wind Turbine Blades on Power Loss in Cold Regions by Zhenju Chuang, Hui Yi, Xin Chang, Hongxiang Liu, Haidian Zhang, Lulin Xia

    Published 2023-05-01
    “…Icing has a great influence on the aerodynamic characteristics of the airfoil, leading to a significant decrease in the power curve. …”
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  7. 1267

    Study on the repair parameters for trailing‐edge bonding failure of wind turbine blade in service by Hui Li, Xueyan Zhang, Bo Zhou, Long Wang, Chengyong Zhu

    Published 2023-01-01
    “…Finally, nine different repaired trailing edge models were developed using Ansys/Fluent for each two two‐dimensional airfoil. A 30–40 m section of a 71 m blade was used to develop a three‐dimensional (3D) rotating model with the repaired trailing edge. …”
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  8. 1268

    Design of Wave Glider Optimal Parameters Suitable for the Northwest Pacific Ocean, the North Indian Ocean, and the South China Sea by Xi Chen, Mei Hong, Shiqi Wu, Kefeng Liu, Kefeng Mao

    Published 2021-04-01
    “…In addition, a dynamic model was used to simulate the influence of umbilical length, airfoil, and maximum limited angle on the velocity of the Wave Glider under the five types of wave element. …”
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  9. 1269

    Deep-Learning-Based Reduced-Order Model for Power Generation Capacity of Flapping Foils by Ahmad Saeed, Hamayun Farooq, Imran Akhtar, Muhammad Awais Tariq, Muhammad Saif Ullah Khalid

    Published 2023-06-01
    “…Here, we propose a proper orthogonal decomposition (POD)-based reduced-order model (ROM) of power generation by flapping airfoils in conjunction with deep neural networks. …”
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  10. 1270

    Preliminary Concept of an Unmanned Aerial Vehicle for Patrolling of Water Basins by Edyta ŁADYŻYŃSKA-KOZDRAŚ, Sylwester TUDRUJ, Barbara KOZŁOWSKA, Konrad KAMIENIECKI

    Published 2019-12-01
    “…The capability of safe emergency unpowered landing of the UAV enabled the application of an reflex airfoil based on the Kasper wing design. In the event of a propulsion power loss, the UAV could automatically begin a low advance velocity flight to reduce the risk of UAV failure upon touchdown. …”
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  11. 1271

    Martian Combustion-Powered Fixed-Wing UAVs: An Introductory Investigation and Analysis by Samuel A. Ross, Amanda E. White, Adam Andresen, Shah Saud Alam, Christopher Depcik

    Published 2022-08-01
    “…As a result, this study investigates the flight of this UAV in the Martian atmosphere with the assumptions that it employs an NACA S7012 airfoil and its electric propulsion technology is replaced with a four-stroke oxy-methane fueled Saito FG-11 internal combustion engine (ICE). …”
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  12. 1272

    On the Aerodynamic Analysis and Conceptual Design of Bioinspired Multi-Flapping-Wing Drones by Ethan Billingsley, Mehdi Ghommem, Rui Vasconcellos, Abdessattar Abdelkefi

    Published 2021-07-01
    “…Several wing shapes and airfoils are considered, and aerodynamic simulations are conducted, to determine the optimal planform, airfoil, formation angle, and angle of attack. …”
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  13. 1273

    FLOW SEPARATION OF AXIAL COMPRESSOR CASCADE BLADES by Arkan Kh. Al-Taie, Sabah Faleh Habeeb

    Published 2010-06-01
    “…The cascade was tested in an open type low-speed subsonic (Mach number=0.117) wind tunnel, for Reynolds number (Re=239605) based on maximum velocity (35 m/s) and airfoil chord length. The total and static pressures were measured in selected points between the two blades for stagger angles of (4 0 , 0 0 ,- 4 0 ,-8 0 and -120) by using a multi-tube manometer and a pitot static tube. …”
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  14. 1274
  15. 1275

    Analysis on fracture mechanics theory of roof cutting instability mechanism with large mining height face in shallow coal seam by Dengfeng Yang, Dengfeng Yang

    Published 2023-01-01
    “…The necessary condition for rock beam instability was crack activation, and the sufficient condition was the airfoil branch crack propagate through the rock beam. …”
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  16. 1276

    A Survey of the Quasi-3D Modeling of Wind Turbine Icing by Fahed Martini, Adrian Ilinca, Patrick Rizk, Hussein Ibrahim, Mohamad Issa

    Published 2022-11-01
    “…Wind turbine icing has been the subject of intensive research over the past two decades, primarily focusing on applying computational fluid dynamics (CFD) to 2D airfoil simulations for parametric analysis. As a result of blades’ airfoils deformation caused by icing, wind turbines experience a considerable decrease in aerodynamic performance resulting in a substantial loss of productivity. …”
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  17. 1277

    Influence mechanism of the diameter of the energy accumulation hole on the bi-directional cumulative tension blasting by Xiaohu Zhang, Yijun Jiang, Peng Zhao, Zhifeng Zhao, Xiaobo Hao

    Published 2024-03-01
    “…When diameter exceeds 14 mm, symmetrical airfoil cracks appear in non-concentrated energy directions, with larger diameters resulting in shorter crack propagation lengths. …”
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  18. 1278

    Two-Way Coupled Aero-Structural Optimization of Stable Flying Wings by José D. Hoyos, Camilo Echavarría, Juan P. Alvarado, Gustavo Suárez, Juliana A. Niño, Jorge I. García

    Published 2023-04-01
    “…Different shapes are evaluated during the optimization process until the algorithm reaches the optimal wing aspect ratio, taper ratio, angle of incidence, twist angle, swept angle, and airfoil shape, where a six-parameters method is employed to allow reflex airfoils. …”
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  19. 1279

    Multi-Fidelity Aerodynamic Data Fusion with a Deep Neural Network Modeling Method by Lei He, Weiqi Qian, Tun Zhao, Qing Wang

    Published 2020-09-01
    “…To test the proposed multi-fidelity aerodynamic data fusion method, we calculated Euler and Navier–Stokes simulations for a typical airfoil at various Mach numbers and angles of attack to obtain the aerodynamic coefficients as low- and high-fidelity data. …”
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  20. 1280

    An experimental investigation on mechanical performances of 3D printed lightweight ABS pipes with different cellular wall thickness by B. Ergene, I. Şekeroğlu, Ç. Bolat, B. Yalçın

    Published 2021-06-01
    “…Also, the applications of cellular structures (or lattice structures) such as wing airfoil, tire, fiber and implant, are mainly used in aerospace, automotive, textile and biomedical industries respectively. …”
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