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2361
Airborne-Spray-Drift Collection Efficiency of Nylon Screens: Measurement and CFD Analysis
Published 2022-11-01“…This study evaluated the collection efficiency of two airborne-spray-drift collectors using an experimental drift wind tunnel. The airborne spray drifts were quantified by a total organic carbon analyser and validated by comparison to measurements using liquid chromatography with tandem mass spectrometry. …”
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2362
The Effects of Aerodynamic Interference on the Aerodynamic Characteristics of a Twin-Box Girder
Published 2021-10-01“…To investigate the aerodynamic characteristics of a twin-box girder in turbulent incoming flow, we carried out wind tunnel tests, including two aerodynamic interferences: leading body-height grid, and leading circular cylinder. …”
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2363
Experimental investigation and life cycle assessment of a phase change material (PCM) based thermoelectric (TE) refrigerator
Published 2023-08-01“…As a novelty, the proposed prototype is evaluated experimentally with different tests by using the wind tunnel and temperature controller. The results indicate that the PCM-based TE refrigerator can maintain the temperature of a variety of food products for applications such as refrigerator vehicles. …”
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2364
Comparative Numerical Analysis on Vertical Wind Turbine Rotor Pattern of Bach and Benesh Type
Published 2020-05-01“…The rotors design pattern is made according to previous results obtained by different researchers who have performed numerical analysis on virtual models and tests on the experimental rotor models using the wind tunnel. The constructive solutions are describing two-bladed rotor models, in four new designed constructive variants and analyzed using ANSYS CFX. …”
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2365
Simulation of and Experimental Research on Rivulet Model on Airfoil Surface
Published 2022-09-01“…Experiments on NACA0012 airfoil surfaces were conducted based on an open straight-flow and low-speed wind tunnel. Simultaneously, an engineered three-dimensional rivulet model considering the surface roughness was established based on the energy-minimum principle. …”
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2366
Transient Dynamic System Behavior of Pressure Actuated Cellular Structures in a Morphing Wing
Published 2021-03-01“…Decisive design aspects are the actuation speed, the resistance against external loads, and constraints preparing for a future wind tunnel test. The structural stiffness under varying aerodynamic loads is examined while using a reduced-order truss model and a high-fidelity finite element analysis. …”
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2367
Check-Valve Design in Enhancing Aerodynamic Performance of Flapping Wings
Published 2021-04-01“…Based on the inference, the check-valve opens and closes during the upstroke flapping and downstroke flapping, respectively. Wind tunnel experiments were conducted by considering the two cases of wing design, i.e., with and without a check-valve for various driving voltages, wind speeds and different inclined angles. …”
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2368
Measuring Device for Air Speed in Macroporous Media and Its Application Inside Apple Storage Bins
Published 2018-02-01“…The device is calibrated in a wind tunnel in a measuring range of 0–1.3 m/s. Air speed measurements in fruit bulks on laboratory scale and in an industrial fruit store show air speeds in gaps between fruit with high stability at different airflow levels. …”
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2369
A method for reducing parasite drag of medium transport helicopter
Published 2023-04-01“…Modern methods of computational fluid dynamics with an acceptable degree of accuracy make it possible to consider the interference phenomena of the components of the hub, swashplate, and helicopter fuselage, which is not always possible, to obtain correctly during expensive wind tunnel tests. During the work, the following results were obtained. …”
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2370
Experimental Investigation of Temperature Distribution in a Laminar Boundary Layer over a Heated Flat Plate with Localized Transverse Cold Air Injections
Published 2023-08-01“…The flat plate with the heater was mounted inside a subsonic wind tunnel to sustain a constant laminar air flow. …”
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2371
The Noise-Reduction Characteristics of Microstructure of Dragonfly Wing Leading Vein
Published 2021-03-01“…It was found that the serrated microstructure can significantly suppress the noise generation in the mid-frequency band. Finally, wind tunnel tests were simulated using a designed low-noise rotating test platform. …”
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2372
Interpretation of Machine-Learning-Based (Black-box) Wind Pressure Predictions for Low-Rise Gable-Roofed Buildings Using Shapley Additive Explanations (SHAP)
Published 2022-05-01“…The accuracy of models was verified using Tokyo Polytechnic University (TPU) wind tunnel data. Subsequently, we used Shapley Additive Explanations (SHAP) to explain the black-box nature of the ML predictions. …”
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2373
Experimental Assessment of RANS Models for Wind Load Estimation over Solar-Panel Arrays
Published 2021-03-01“…This paper reports a comparison between wind-tunnel measurements and numerical simulations to assess the capabilities of Reynolds-Averaged Navier-Stokes models to estimate the wind load over solar-panel arrays. …”
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2374
Effect of engine failure on aerodynamic characteristics of a light transport aircraft model
Published 2022-09-01“…Ensuring flight safety in these modes requires extensive experimental studies in wind tunnels to simulate the basic flight envelope with an inoperative engine. …”
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2375
Experimental Investigation of Static Stall Hysteresis and 3-Dimensional Flow Structures for an NREL S826 Wing Section of Finite Span
Published 2018-06-01“…Flow characteristics of an S826 airfoil at different Reynolds numbers, ranging from 40,000–400,000 (based on airfoil chord length) and angles of attack from −10–25 degrees are thoroughly investigated in a low-speed wind tunnel. The airfoil’s lift and drag polars are first measured, and with a focus on pitching the airfoil in upstroke and downstroke orders, static stall hysteresis is identified in selected experiments at Reynolds numbers below 100,000 near the stall angle and subsequently investigated. …”
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2376
The Influence of Shock Wave Surface Treatment on Vibration Behavior of Semi-Solid State Cast Aluminum—Al<sub>2</sub>SiO<sub>5</sub> Composite
Published 2022-11-01“…After solidification, developed as-cast materials were subjected to shock wave treatment in the subsonic wind tunnel. Various techniques were used to evaluate the change in shock wave exposure, including mechanical and structural analysis, which is a field dedicated to the study of vibrations and other material properties. …”
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2377
Numerical Simulation and Experimental Verification of Wind Field Reconstruction Based on PCA and QR Pivoting
Published 2023-02-01“…Simulation results show that when the number of sensors is equal to the number of basis vectors, the error of random placement is even 20 times of the optimal placement, which illustrates that QR pivoting is a powerful optimization algorithm. Finally, a wind tunnel experiment of velocity field reconstruction is performed, to verify the practicability of the optimized method based on QR pivoting, and the results indicate that a reasonably high accuracy 3D wind field can be obtained with only 10 sensors (the error of most points is less than 5% and the minimum error is only 0.74%). …”
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2378
Characteristic Differences of Wind-Blown Sand Flow Field of Expressway Bridge and Subgrade and Their Implications on Expressway Design
Published 2022-05-01“…This study aims to understand the differences in the influence of expressway bridges and subgrades on the near-surface blown sand environment and movement laws, such as the difference in wind speed and profile around the bridge and subgrade, the difference in wind flow-field characteristics, and the difference in sand transport rate, to provide a scientific basis for the selection of expressway route forms in sandy areas. Therefore, a wind tunnel test was carried out by making models of a highway bridge and subgrade and comparing the environmental effects of wind sand on them. …”
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2379
Near-Wall Flow in Turbomachinery Cascades—Results of a German Collaborative Project
Published 2021-05-01“…Several test rigs with modifiable configurations are used for the experimental investigations including an axial low speed compressor, an axial high-speed wind tunnel, and an axial low-speed turbine. Approved stationary and time resolving measurements techniques are applied in combination with custom hot-film sensor-arrays. …”
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2380
Flow Separation Control of Nacelle Inlets in Crosswinds by Dielectric Barrier Discharge Plasma Actuation
Published 2023-05-01“…The results show that under the condition that the flow velocity of the wind tunnel is 35 m/s and the crosswind angle is 10°, the average total pressure loss coefficient and distortion index decrease by 29.62% and 44.14% by NS-DBD actuation. …”
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