Multiphase CFD Simulation of Photogrammetry 3D Model for UAV Crop Spraying

Parra, Héctor Guillermo; Angulo-Morales, Victor; García, Elvis Eduardo Gaona

doi:10.1007/978-3-030-16181-1_76

Cited by 5 publications

(3 citation statements)

References 5 publications

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“…In many researches, CFD (Computational Fluid Dynamics) was used to simulate downwash airflow distribution and droplet deposition. However, it is difficult to make sure the simulation results are close to practical conditions because of model choices and parameters setting (Parra H.G. et al, 2019).…”

Section: Statistical Analysis On Nozzle Angle and Flight Speedmentioning

confidence: 99%

Automatic System and Method for Improving Aerial Spray Droplet Penetration

Tian

Xue

Duan

et al. 2022

INMATEH

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When UAVs apply a pesticide at different speeds, droplet deposition area and canopy vortex area are not at the same location, which prevents droplets from depositing on the backside of leaves and lower part of plants in canopy vortex, and affects spray quality and pests and diseases control effect. To shorten the distance between the two areas and improve droplet penetration, a method for adjusting nozzle inclination angle based on droplet force analysis and tests was proposed in this paper. According to the obtained model, an automatic nozzle angle adjustment system was developed from hardware and software. The experimental results showed that the number of droplets deposited on the entire leaf increased by 21.58% when UAV spraying with the system mounted. The average number of droplets on the front side of the leaf increased by 14.44% while 66.05% was on the backside of the leaf with the system mounted. This indicates that the method and system proposed have a significant impact on improving the UAV spray penetration.

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Section: Statistical Analysis On Nozzle Angle and Flight Speedmentioning

confidence: 99%

Automatic System and Method for Improving Aerial Spray Droplet Penetration

Tian

Xue

Duan

et al. 2022

INMATEH

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“…The design of wind turbines with additional devices on their blades is a growing line of research in several parts of the world, these designs usually have approaches such as: Energy production [1-3], 2 of 22 structural vibration mitigation systems [4,5], use of composite materials [6] and CFD simulation (Computational Fluid Dynamics) [7]. These simulations allow to appreciate the 3D behavior of the fluid when interacting with novel devices such as blade tips, UAV's with different number of blades, and aerial spraying applications [8][9][10]. Another approach is the creation of mechanical improvements based on living organisms [10,11], previous works study wind turbine blade shapes inspired by living organisms for the purpose of noise reduction and performance analysis [12].…”

Section: Introductionmentioning

confidence: 99%

“…These simulations allow to appreciate the 3D behavior of the fluid when interacting with novel devices such as blade tips, UAV's with different number of blades, and aerial spraying applications [8][9][10]. Another approach is the creation of mechanical improvements based on living organisms [10,11], previous works study wind turbine blade shapes inspired by living organisms for the purpose of noise reduction and performance analysis [12]. In this work we analyze the behavior of an airfoil blade used in high velocity turbines such as the S822 [13][14][15], with vortex generators devices inspired by the peregrine falcon [16][17][18], previous studies highlight that this bird has flight stabilizer feathers on its back.…”

Section: Introductionmentioning

confidence: 99%

Experimental Analysis of Bio-Inspired Vortex Generators on a Blade with S822 Airfoil

Parra,

Ceron,

Gomez

et al. 2023

Energies

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Vortex generators are used in aircraft wings and wind turbine blades. These devices allow them to maintain a stable turbulent behavior in the wind wake. Vortex generators, or VGs, improve the transition from laminar to turbulent boundary layer regime, avoiding abrupt shedding. HAWT wind turbines have high rotational velocity. Currently, HAWT turbines are being redesigned with fixed vortex generators, achieving higher energy production. This paper presents a wind tunnel analysis of a fixed-wire blade with S822 airfoil and active VGs bio-inspired by the flight-stabilizing feathers of the peregrine falcon. Vibrations measured on the blade show a reduction in intensity at wind velocities close to 15 m/s. The measured wake velocities show fluctuations at higher tunnel wind velocities. An FFT spectral analysis of the wind wake velocities showed differences between the spectral components. When activating the VGs in oscillation at a constant frequency, a reduction of the vibrations on the blade was observed for wind velocities around 20 m/s.

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