Showing 421 - 440 results of 500 for search '"aerodynamics"', query time: 0.05s Refine Results
  1. 421

    Optical Properties of the Urban Aerosol Particles Obtained from Ground Based Measurements and Satellite-Based Modelling Studies by Genrik Mordas, Nina Prokopciuk, Steigvilė Byčenkienė, Jelena Andriejauskienė, Vidmantas Ulevicius

    Published 2015-01-01
    “…Measurements included the light scattering coefficients at 3 wavelengths (450, 550, and 700 nm) measured with an integrating nephelometer and aerosol particle size distribution (0.5–12 μm) and number concentration (Dpa > 0.5 μm) registered by aerodynamic particle sizer. Particle number concentration and mean light scattering coefficient varied from relatively low values of 6.0 cm−3 and 12.8 Mm−1 associated with air masses passed over Atlantic Ocean to relatively high value of 119 cm−3 and 276 Mm−1 associated with South-Western air masses. …”
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  2. 422

    Experimental Investigation of Thermal Modal Characteristics for a Ship’s Foundation under 300°C by Zheyu Ding, Hongbai Bai, Yiwan Wu, Yue Zhu, Yichuan Shao

    Published 2019-01-01
    “…The joint test system consists of a transient aerodynamic heating environment simulation system and a vibration excitation and acquisition system. …”
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    Article
  3. 423

    Approach and Landing Aircraft Wake Encounter Risk Based on Reynolds-Averaged Navier-Stokes Numerical Simulation by Weijun Pan, Jingkai Wang, Yaxing Xu, Qianlan Jiang, Yuming Luo

    Published 2022-01-01
    “…In order to shorten the wake safe separation, numerical simulation technology with aerodynamic response models and strip models have been combined to calculate wake hazard zone. …”
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    Article
  4. 424

    Status and Challenges on Design and Implementation of Camber Morphing Mechanisms by Tuba Majid, Bruce W. Jo

    Published 2021-01-01
    “…Wing morphing technologies are aimed at making the aircraft more energy or aerodynamically efficient during flight by actively adjusting the wing shape, but their mechanism designs and implementation aspects are often overlooked from practical sense in many technical articles. …”
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    Article
  5. 425

    Investigation and Development of a Three-Dimensional Transmission Tower-Line System Model Using Nonlinear Truss and Elastic Catenary Elements for Wind Loading Dynamic Simulation by Xiao Zhu, Ge Ou

    Published 2021-01-01
    “…The application of the open-source package transmission tower-line model on extreme wind speed considering the aerodynamic damping is further implemented.…”
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    Article
  6. 426

    Comparative analysis and manufacturing of airfoil structures suitable for use at low speeds by Sinan Fidan, Satılmış Ürgün, Mert Gökdemir

    Published 2022-12-01
    “…An aerodynamic technique to calculating lift and drag coefficients is one of the required instruments in the wing design process. …”
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    Article
  7. 427

    Study on the Vortex-Induced Vibration Performance of the LSOB Girder of a Valley-Crossing Suspensions Bridge by Weihong Ji, Yu Lin, Shaopeng Yang, Lin Huang

    Published 2024-01-01
    “…The CFD numerical simulations indicate that VIVs of LSOB girders are mainly induced by two types of vortices: one at the inclined webs of leeward wind nozzles and another at the upstream upper surfaces of the deck. Conventional aerodynamic vibration suppression measures, such as the lower central stabilizing plate and the guide vane at the gantry rail, demonstrate that the lower central stabilizing plate can reduce the VIV response at all wind angles of attack, decreasing vertical amplitude by 40%–50% and torsional amplitude by 10%–25%. …”
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    Article
  8. 428

    Improved processing methods for eddy covariance measurements in calculating sensible heat fluxes at glacier surfaces by Cole Lord-May, Valentina Radić

    Published 2024-01-01
    “…Bulk aerodynamic methods have been shown to perform poorly in computing turbulent heat fluxes at glacier surfaces during shallow katabatic winds. …”
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    Article
  9. 429

    Use of Portable Air Purification Systems to Eliminate Aerosol Particles from Patient Rooms by Dominic Dellweg, Gerhard Scheuch, Thomas Voshaar, Dieter Köhler

    Published 2022-03-01
    “…Radioactive particles with a mass median aerodynamic diameter of 0.6 ± 0.4 µm were nebulized from the head position of a simulated patient inside a 38 m3 measuring room. …”
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  10. 430

    Study of Wind Loads and Wind Speed Amplifications on High-Rise Building with Opening by Numerical Simulation and Wind Tunnel Test by Fu-Bin Chen, Xiao-Lu Wang, Yun Zhao, Yuan-Bo Li, Qiu-Sheng Li, Ping Xiang, Yi Li

    Published 2020-01-01
    “…Facade openings have often been used as aerodynamic measures for wind-resistant design of high-rise buildings to meet the requirement of structural safety and comfort. …”
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  11. 431

    Structural Dynamics Analysis and Optimization of an Oil-Free Piston Air Compressor Based on Vibration and Noise Characteristics by Xiaoqing Sun, Yi Shen, Lai Yang, Huafang Liang

    Published 2024-12-01
    “…Firstly, we conduct noise experiment testing, identify the frequency band of aerodynamic noise using a coherence analysis method, and design orthogonal experiments to further optimize pipeline noise. …”
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  12. 432

    Investigation of Structural Nonlinearity Effects on the Aeroelastic and Wake Characteristics of a 15 MW Wind Turbine by Zhenju Chuang, Lulin Xia, Yan Qu, Wenhua Li, Jiawen Li

    Published 2025-01-01
    “…The study finds that nonlinear deformations reduce predicted angle of attack, decrease aerodynamic load distribution, and lead to a noticeable decline in both wind turbine performance and blade deflection. …”
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  13. 433

    Wind and rainfall erosion energy in large sediment generating and coarse sediment class areas of the middle Yellow river by Tao Yang, Jianzhi Niu, Dengxing Fan, Di Wang, Yubo Miao, Miao Wang, Chunguang Zhao, Linus Zhang, Xiongwen Chen, Ronny Berndtsson

    Published 2025-03-01
    “…We calculated the wind and rainfall erosion energies by using the aerodynamic energy and rainfall kinetic energy formulas. …”
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  14. 434

    Influence of trains meeting on the ventilation performance of equipment compartment with independent air duct in high-speed train: numerical and experimental study by Yitong Wu, Wei Zhou, Xifeng Liang, Xinchao Su, Kewei Xu, Yutao Xia, Zhixin Wang, Sinisa Krajnović

    Published 2024-10-01
    “…The results indicate that the primary factors influencing ventilation effectiveness are the aerodynamic compression and deceleration of airflow induced by the other train’s nose, as well as the instability of the external flow field in the wake of the other train. …”
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  15. 435

    Finite element analysis and artificial neural network for stress distribution of an aircraft model in a wind tunnel by Ahmed Al-Mulla Khalaf, Sinan Al-Haddad, Bilal Al-Oubaidi, Naseem Ibrahim, Fawaz Abdulwahed, Athraa Hilal

    Published 2025-01-01
    “…Wind tunnels are instrumental in the aerodynamic analysis of aircraft model structures, enabling the replication of real circumstances for better design and performance evaluation. …”
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    Article
  16. 436

    Contribution of dust emissions from farmland to particulate matter concentrations in North China Plain: Integration of WRF-Chem and WEPS model by Haopeng Zhang, Feng Wang, Shenghui Zhou, Tianning Zhang, Minghui Qi, Hongquan Song

    Published 2025-01-01
    “…Wind erosion from farmland is a significant contributor to atmospheric particulate matter, particularly PM10 (atmospheric particulate matter with an aerodynamic diameter ≤ 10 μm), in regions with intensive agricultural activities such as the North China Plain (NCP). …”
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  17. 437

    Multidimensional System Identification and Active Vibration Control of a Piezoelectric-Based Sting System Used in Wind Tunnel by Yi Yu, Xing Shen, Yun Huang

    Published 2020-01-01
    “…In wind tunnel tests, the cantilever sting is usually used to support aircraft models because of its simple structure and low aerodynamic interference. However, in some special conditions, big-amplitude and low-frequency vibration would occur easily on the model not only in the pitch direction but also in the yaw direction, resulting in inaccurate data and even damage of the supporting structure. …”
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    Article
  18. 438

    Design and Application of a Test Rig for Stationary Component Performance Measurement of Centrifugal Compressors by K. Zhao, Y. Liu, Y. Zhang, X. Liu, H. Shi

    Published 2025-02-01
    “…These results align with the findings obtained on a rotating test rig, indicating the feasibility of the proposed stationary component aerodynamic performance test rig.…”
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    Article
  19. 439

    Optimization of Carrier-Based Dry Powder Inhaler Performance: A Review by Tanu Mehta, Saeed Najafian, Komalkumar Patel, Justin Lacombe, Bodhisattwa Chaudhuri

    Published 2025-01-01
    “…To reach the small airways of the deep lung, the active pharmaceutical ingredients (API) particles need to have an aerodynamic diameter of 1–5 μm to avoid impaction and particle sedimentation in the upper respiratory tract, and due to this small particle size, the powder becomes highly cohesive resulting in poor flow. …”
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  20. 440

    Extreme thermal load generation method for high-temperature structures in atmospheric environment by WANG Binwen, ZHANG Yi, QIN Qiang, CHEN Hong, WU Jingtao

    Published 2024-12-01
    “…For addressing the severe aerodynamic thermal load simulation challenge of hypersonic aircraft in ground tests, an extreme thermal load generation method based graphite for high-temperature structures in atmospheric environment is proposed. …”
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    Article