Showing 2,061 - 2,080 results of 2,660 for search '"wind tunnel"', query time: 0.37s Refine Results
  1. 2061

    Numerical and Experimental Investigation of Wiper System Performance at High Speeds by S. Cadirci, E. S. Ak, B. Selenbas, H. Gunes

    Published 2017-01-01
    “…Utilizing the output of the numerical analysis, the new wiper-blade-spoiler profile is selected and then manufactured to test its wiping performance in a thermal wind tunnel by soiling tests. Numerical studies are validated by experimental tests, since the new wiper profile has been proven as a more efficient prototype in terms of wiping performance compared to the original one.…”
    Get full text
    Article
  2. 2062

    PERMEABILITY MAP OF RESIDENTIAL SETTLEMENTS IN THE TROPICS by I Gusti Ngurah Antaryama

    Published 2002-01-01
    “…Source of information for ventilation design of residential settlement is generally derived from wind tunnel or, recently, CFD studies, which involves both modeling and simulation of wind flow pattern and speed. …”
    Get full text
    Article
  3. 2063

    Experimental study on the characterization of the self-starting capability of a single and double-stage Savonius turbine by M.S. M. Shamsuddin, Noorfazreena M. Kamaruddin

    Published 2023-03-01
    “…Therefore, the current study explored and analyzed the extent of these parameters using a multi-stage conventional Savonius turbine in a wind tunnel facility with a varying flow speed of 5 m/s to 9 m/s. …”
    Get full text
    Article
  4. 2064

    Real-time measurement of fluorescent oil film motion path based on GPU by WU Peiling, ZHANG Zhengyu, SUN Wei

    Published 2023-02-01
    “…In the wind tunnel experiment, the existing CPU-based optical flow method takes too long to solve the velocity field of the fluorescent oil film, while the GPU-based optical flow method has the problem of insufficient utilization of GPU resources.To this end, a real-time measurement method of GPU fluorescent oil film motion path based on fluorescent oil film image segmentation and critical constraints is proposed.The fluorescent oil film time-series image is divided into blocks and processed in parallel according to the resources of the GPU, and the corresponding optical flow parallel computing strategy is created, that is, the advantages of the parallel pipeline architecture of the GPU and the shared memory are fully utilized to realize the optical flow calculation of each parallel block.At the same time, combined with the critical constraints between blocks, the number of iterative calculations is controlled by the iterative difference of the speed matrix of each block as a symbol.The experimental results show that the method proposed in this paper is 2 789.5 times faster than the traditional CPU-based optical flow method under the condition of ensuring the calculation accuracy of the velocity field of the fluorescent oil film motion, and the average speed of the GPU optical flow method of the whole frame image is improved.10.09 times and the real-time solution speed can reach 90 frames per second.…”
    Get full text
    Article
  5. 2065

    CFD Simulation Of Air-Flow Over A „Quarter-Circular” Object Valided By Experimental Measurement by Králik Juraj, Hubová Oľga, Konečná Lenka

    Published 2015-12-01
    “…Several, well know transient turbulence models were used and results were compared to experimental measurement of this object in Boundary Layer Wind Tunnel (BLWT) of Slovak University of Technology (SUT) in Bratislava. …”
    Get full text
    Article
  6. 2066

    Coupled simulation of CFD and human thermoregulation model in outdoor wind environment by Liang Haobin, Tanabe Shin-ichi, Niu Jianlei

    Published 2023-01-01
    “…The thermal interactions between the human and surrounding environment in the wind tunnel, represented by convective and radiant heat transfer coefficient, are calculated by CFD and serve as inputs for the JOS-3 thermoregulation model. …”
    Get full text
    Article
  7. 2067

    Chemical Discrimination in Turbulent Gas Mixtures with MOX Sensors Validated by Gas Chromatography-Mass Spectrometry by Jordi Fonollosa, Irene Rodríguez-Luján, Marco Trincavelli, Alexander Vergara, Ramón Huerta

    Published 2014-10-01
    “…Aiming at reproducing more realistic environments, we utilize a wind tunnel with two independent gas sources that get naturally mixed along a turbulent flow. …”
    Get full text
    Article
  8. 2068

    INCREASE OF CONTROL SURFACES EFFICIENCY OF A SUBSONIC AIRCRAFT OF SHORT TAKEOFF AND LANDING by Yu. S. Mikhailov

    Published 2019-04-01
    “…The efficiency of the above-mentioned control surfaces has been studied in TsAGI low speed wind tunnel on a model of a twin-engine light aircraft with an enhanced level of lifting capacity on take-off and landing configurations. …”
    Get full text
    Article
  9. 2069

    An improved inflow turbulence generator for large eddy simulation evaluation of wind effects on tall buildings by Ting Deng, Zhiwei Chen, Ji-Yang Fu, Yi Li

    Published 2023-12-01
    “…Compared with the results of CAARC model obtained from the wind tunnel test, the improved method in this study decreases the errors of root-mean-square (rms) of the based bending moment from 5.3% to 4.1% in the along-wind direction and from 5.6% to 1.3% in the cross-wind direction.…”
    Get full text
    Article
  10. 2070

    Numerical flow simulation of mechanism of increase and method for suppressing increase in lift force of pantograph head of conventional line pantograph under crosswind by Takumi ABE, Koji NAKADE, Takeshi MITSUMOJI

    Published 2023-07-01
    “…In a previous study, wind tunnel tests using a full-scale pantograph were performed at various attack angles of the crosswind to understand the lift force characteristics of a pantograph in crosswind conditions. …”
    Get full text
    Article
  11. 2071

    The Experiments and Stability Analysis of Hypersonic Boundary Layer Transition on a Flat Plate by Yanxin Yin, Yinglei Jiang, Shicheng Liu, Hao Dong

    Published 2023-12-01
    “…The <i>N</i>-factor of the transition location in the wind tunnel experiment predicted by LST is about 0.98 and 1.25 for <i>Re</i><sub>unit</sub> = 6.38 × 10<sup>6</sup> and 8.20 × 10<sup>6</sup>, respectively.…”
    Get full text
    Article
  12. 2072

    Deployable vortex generators for low Reynolds numbers applications powered by cephalopods inspired artificial muscles by Rabiu Mamman, Parth Kotak, Thilina Weerakkody, Tatum Johnson, Austin Krebill, James Buchholz, Caterina Lamuta

    Published 2023-12-01
    “…Experiments were conducted in a wind tunnel using a NASA Langley Research Center LS (1)-0417 GA(W)-1 airfoil. …”
    Get full text
    Article
  13. 2073

    Simulation and Experimental Study on the Ultrasonic Micro-Vibration De-Icing Method for Wind Turbine Blades by Yan Li, He Shen, Wenfeng Guo

    Published 2021-12-01
    “…A return-flow icing wind tunnel system, and a device used to measure the adhesive strength of ice covering the airfoil blade, were designed and manufactured. …”
    Get full text
    Article
  14. 2074

    Extreme Wind Loading on Flat-Roof-Mounted Solar Arrays with Consideration of Wind Directionality by Jingxue Wang, Min Liu, Qingshan Yang, Yi Hui, Shidong Nie

    Published 2023-01-01
    “…The estimation process is conducted by using in situ wind speeds obtained from meteorological stations and wind loading coefficients on solar arrays obtained from wind tunnel tests based on the joint probability distribution of multiple variables and their conditional probabilities. …”
    Get full text
    Article
  15. 2075

    CFD Analysis of Building Cross-Ventilation with Different Angled Gable Roofs and Opening Locations by Jingyuan Shi, Changkai Zhao, Yanan Liu

    Published 2023-10-01
    “…Computational simulations were carried out using the SST k-omega turbulence model, and validation was performed against experimental data supplied by the Japanese AIJ Wind Tunnel Laboratory. Grid independence validation was also conducted to ensure the reliability of the CFD simulation results. …”
    Get full text
    Article
  16. 2076

    Active control of sheet flutter by using injection and suction air flows from a nozzle by Hikaru TAKAHASHI, Satoru KAWAHARA, Masakazu TAKEDA, Keiichi HIROAKI, Masahiro WATANABE

    Published 2021-06-01
    “…PET sheet is used as a controlled object, and the sheet is supported upper end in a wind tunnel. To show the effectiveness of this technique for sheet flutter suppression, the suppression characteristics are experimentally examined. …”
    Get full text
    Article
  17. 2077

    High-Rate, High-Precision Wing Twist Actuation for Drone, Missile, and Munition Flight Control by Ronald Barrett-Gonzalez, Nathan Wolf

    Published 2022-08-01
    “…Dynamic testing showed corner frequencies greater than 310 Hz. A series of wind tunnel tests at up to 180 ft/s (55 m/s, 123 mph, 107 kts, 198 kph) demonstrated excellent roll control authority, rapid manipulation of C<sub>lδ</sub>, and lift manipulation using quasi-static deflections. …”
    Get full text
    Article
  18. 2078

    Leading-Edge Vortex Characteristics of Low-Aspect-Ratio Sweptback Plates at Low Reynolds Number by Jong-Seob Han, Christian Breitsamter

    Published 2021-03-01
    “…Direct force/moment measurements and surface oil-flow visualizations were conducted in the wind-tunnel B at the Technical University of Munich. …”
    Get full text
    Article
  19. 2079

    Experimental and CFD Investigation of Directional Stability of a Box-Wing Aircraft Concept by Gueraiche Djahid, Karpovich Elena, Pikulev Maxim, Kuznetsov Alexander, Sergey Popov, Manoranjan Sinha

    Published 2022-10-01
    “…Solutions included the use of a ducted propeller and few configurations of small “fishtail” vertical fins, which formed part of the aft fuselage itself and coupled with vortex generators on the fuselage surface to improve their interference and heal flow separation at the fuselage aft cone. The results of wind tunnel testing were supported with CFD simulations to explain the flow behavior of each of the studied solutions. …”
    Get full text
    Article
  20. 2080

    Conformal Mapping-Based Discrete Vortex Method for Simulating 2-D Flows around Arbitrary Cylinders by Guoqing Jin, Zhe Sun, Zhi Zong, Li Zou, Yingjie Hu

    Published 2021-12-01
    “…The force and velocity fields revealed that this boundary scheme converged, and the resultant time-averaged surface pressure distributions were all in excellent agreement with wind tunnel tests. Furthermore, a flow around a symmetrical Joukowski foil at Reynolds number <i>Re</i> = 4.62 × 10<sup>4</sup>, without considering the trailing cusp, was investigated, and a close agreement with the experimental data was obtained.…”
    Get full text
    Article