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2441
Companion crops alter olfactory responses of the fall armyworm (Spodoptera frugiperda) and its larval endoparasitoid (Cotesia icipe)
Published 2023-07-01“…However, in the multiple-choice bioassays, significantly fewer eggs were laid on maize when companion plants were present except cassava. While wind tunnel bioassays confirmed the differential behavioural responses of FAW, we found that its larval endoparasitoid C. icipe was attracted to volatiles from the companion plants tested individually and/or when they were combined with maize. …”
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2442
Digestate Application Methods and Rates with Regard to Greenhouse Gas Emissions and Crop Conditions
Published 2024-02-01“…The fluxes, i.e., methane (CH<sub>4</sub>), ammonia, and carbon dioxide (CO<sub>2</sub>), were monitored using the wind tunnel method. Crop growth and potential nutrient utilization by silage maize were assessed through stand condition monitoring by the Normalized Difference Vegetation Index (NDVI) and the Normalized Difference Water Index (NDWI) using remote sensing. …”
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2443
Sectional Leading Edge Vortex Lift and Drag Coefficients of Autorotating Samaras
Published 2023-04-01“…Subsequently, a numerical Blade Element-Momentum model (BEM) of the autorotating samara encompassing different lift profiles was developed and validated against a comprehensive set of samara flight data, which were measured from wind tunnel experiments conducted at the University of Bristol for three different Sycamores. …”
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2444
Wind Turbulence Statistics of the Atmospheric Inertial Sublayer under Near-Neutral Conditions
Published 2020-10-01“…The mean windward velocity profile is described comprehensively by the Monin–Obukhov similarity theory, which is equivalent to the logarithmic law of the wall in the wind tunnel boundary layer. Similar logarithmic relations have been recently proposed to correlate turbulent velocity variances with height based on Townsend’s attached-eddy theory. …”
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2445
Experimental research of single - rotor helicopter unintentional yaw rotation
Published 2020-04-01“…In regards to this fact the decision to carry out a series of wind tunnel experiments using helicopter model and propeller was taken. …”
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2446
Limiting Wind-Induced Resuspension of Radioactively Contaminated Particles to Enhance First Responder, Early Phase Worker and Public Safety—Part 1
Published 2022-02-01“…Two and six weeks post-treatment, resuspension was examined by inducing wind-driven resuspension and quantitatively measuring particle emission from the soils using a boundary-layer wind tunnel system. Experiments were conducted under typical wind velocities of this region. …”
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2447
Design and Development of a Wind Turbine with Flanged Diffuser Operating in Low Wind Speed Regime
Published 2022-12-01“…In this paper, the performance characteristics of a fabricated horizontal axis wind turbine with and without flanged diffusers were studied using wind tunnel experiment. Measurements of global parameters (power, torque, rotational speed efficiency, etc.) were carried out at wind speed regime between 3-7 m/s. …”
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2448
Numerical Simulation on Wind Speed Amplification of High-Rise Buildings with Openings
Published 2023-11-01“…Firstly, the inflow turbulence synthesis method and parameter settings for LES were verified by comparing the simulation results of standard square cylinders with those of wind tunnel experiments, and the optimal boundary conditions were determined. …”
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2449
Wind Effects on Re-Entrant Wing Faces of Plus Plan-Shaped Building
Published 2023-12-01“…Building dimensions are scaled down as per the ASCE wind tunnel test manual, and the length scale is kept at 1:100 for CFD investigation. …”
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2450
OVLI-TA: An Unmanned Aerial System for Measuring Profiles and Turbulence in the Atmospheric Boundary Layer
Published 2019-01-01“…OVLI-TA is capable of profiling wind speed, wind direction, temperature, and humidity up to 1 km altitude, in addition to measuring turbulence. After wind tunnel calibrations, flight tests were conducted in March 2016 in Lannemezan (France), where there is a 60-m tower equipped with turbulence sensors. …”
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2451
Research on the Methods for Obtaining Droplet Impingement Characteristics in the Lagrangian Framework
Published 2024-02-01“…Then, these three methods are applied to obtain the results for water droplet trajectories and the collection efficiency of an S-shaped duct, a 2D engine cone section and an icing wind tunnel. The results show that the distributions of water droplet collection efficiency obtained by the three methods are consistent and the three methods are all feasible when the water droplets do not overlap or cross before hitting the aircraft surfaces. …”
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2452
Correlation between Density of Reentry Plasma and Frequency of Attenuated Electromagnetic Signals Based on Laboratory Measurements
Published 2023-01-01“…Alternatively, an experiment in a large-scale plasma wind tunnel would be necessary. Unfortunately, these experiments would be extremely costly. …”
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2453
Experimental investigation of the film cooling performance by triangular-shaped thin plates on inclined cylindrical holes
Published 2022-09-01“…A multiple row of cylindrical holes at the flat surface was considered by inclining the holes at 35° along the streamwise direction. A low-speed wind tunnel with the main flow speed of 10 m/s was devised to create a cross flow at a Reynolds number of 196,167 and five blowing ratios of 0.3, 0.5, 0.7, 1, and 2. …”
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2454
Study on the Influence of Coil Arrangement on the Output Characteristics of Electromagnetic Galloping Energy Harvester
Published 2023-11-01“…Additionally, it conducts wind tunnel tests and analyzes the obtained results. …”
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2455
Numerical investigation of aerodynamic characteristics of naca 23112 using passive flow control technique – gurney flaps
Published 2023-12-01“…The CFD process also allows testing at conditions that might otherwise be impractical to test in wind tunnels. The workflow comprised a review of literature, validation of solver settings, preparation and testing of the model, extraction of results and analysis of results. …”
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2456
Correction of Field-Measured Wind Speed Affected by Deterministic Interference Factors
Published 2022-02-01“…Therefore, the original measured data should be corrected in a targeted manner. Wind tunnel tests (WTT) and computational fluid dynamics (CFD) numerical simulation methods are used to study the local wind environment characteristics of observation sites in Noi Ling Ding Island (NLDI) and Ping An International Financial Center (PAFC) in the Shenzhen area. …”
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2457
Aerodynamic Performance Analysis of Adaptive Drag-Lift Hybrid Type Vertical Axis Wind Turbine
Published 2022-08-01“…In order to better analyze the advantages of the drag-lift hybrid design proposed in this paper, a wind tunnel test was also carried out using the physical model, and the relationship between the leaf tip speed ratio and the wind energy utilization rate was obtained, which intuitively showed the improvement of the wind energy utilization rate of the drag-lift hybrid design compared with the traditional lift blade.…”
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2458
The Hydrodynamic Evolution of Binary Black Holes Embedded within the Vertically Stratified Disks of Active Galactic Nuclei
Published 2023-01-01“…We model the local surroundings of the embedded BBHs using a wind tunnel formalism and characterize different accretion regimes based on the local properties of the disk. …”
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2459
Unsteady Aerodynamic Lift Force on a Pitching Wing: Experimental Measurement and Data Processing
Published 2023-01-01“…This work discusses the experimental challenges and processing of unsteady experiments for a pitching wing in the low-speed wind tunnel of the Vrije Universiteit Brussel. The setup used for unsteady experiments consisted of two independent devices: (a) a position control device to steer the pitch angle of the wing, and (b) a pressure measurement device to measure the aerodynamic loads. …”
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2460
Comparative Evaluation of the Shear Adhesion Strength of Ice on PTFE Solid Lubricant
Published 2023-02-01“…This study aims to qualitatively evaluate the icephobicity performance of a polytetrafluoroethylene (PTFE) solid lubricant film, as an environmentally friendly solution, with a custom-built push-off test device in different icing conditions utilizing a wind tunnel. The ice-adhesion reduction factor (ARF) of the film has been assessed in comparison to a bare aluminium substrate (Al 6061). …”
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