CFD Simulation of Low-attitude Droplets Deposition Characteristics for UAV based on Multi-feature Fusion

Wang, Ling; Du, Chenglie; Zhang, Mengchao; Wang, Yu; Yao, Ze; Wang, Shumao

doi:10.1016/j.ifacol.2018.08.123

Cited by 7 publications

(2 citation statements)

References 9 publications

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“…Relevant studies show that the shear-stress transport (SST) k –

turbulence model can accurately capture the flow separation characteristics, simulate the turbulence phenomenon realistically, and calculate the aerodynamic parameters accurately. This model is widely used in the numerical simulation of propeller wind field [ 32 , 37 , 58 ]. The CFD simulation in this paper is based on Fluent (2019 R2, ANSYS Inc., Canonsburg, USA) simulation platform.…”

Section: Application and Verification Of Cfd Simulationmentioning

confidence: 99%

“…However, the platform cost is high, and the vertical movement range is limited by the floor height. The range of CFD simulation parameters is not limited by the environment; thus, they are widely used in the evaluation of droplet deposition distribution characteristics [37][38][39]. Hong et al used CFD to simulate pesticide spray from air-assisted sprays in an apple orchard.…”

Section: Env Humidity Nozzle Flowmentioning

confidence: 99%

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Design of Variable Spray System for Plant Protection UAV Based on CFD Simulation and Regression Analysis

Wang

Liu

et al. 2021

Sensors

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Multi-rotor unmanned aerial vehicles (UAVs) for plant protection are widely used in China’s agricultural production. However, spray droplets often drift and distribute nonuniformly, thereby harming its utilization and the environment. A variable spray system is designed, discussed, and verified to solve this problem. The distribution characteristics of droplet deposition under different spray states (flight state, environment state, nozzle state) are obtained through computational fluid dynamics simulation. In the verification experiment, the wind velocity error of most sample points is less than 1 m/s, and the deposition ratio error is less than 10%, indicating that the simulation is reliable. A simulation data set is used to train support vector regression and back propagation neural network with multiple parameters. An optimal regression model with the root mean square error of 6.5% is selected. The UAV offset and nozzle flow of the variable spray system can be obtained in accordance with the current spray state by multi-sensor fusion and the predicted deposition distribution characteristics. The farmland experiment shows that the deposition volume error between the prediction and experiment is within 30%, thereby proving the effectiveness of the system. This article provides a reference for the improvement of UAV intelligent spray system.

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“…Relevant studies show that the shear-stress transport (SST) k –

Section: Application and Verification Of Cfd Simulationmentioning

confidence: 99%

Section: Env Humidity Nozzle Flowmentioning

confidence: 99%

Design of Variable Spray System for Plant Protection UAV Based on CFD Simulation and Regression Analysis

Wang

Liu

et al. 2021

Sensors

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Emulation of Multi-Rotor Functionalities in Fixed Wing Airplane for Farm Based Land Surveillance with Controlled Fluid Dispersion System

Neelakandan

Chellakrishna

Antuvan

et al. 2021

IOP Conf. Ser.: Mater. Sci. Eng.

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The World is emerging with Technologies in every discipline, and India plays a vital role in the export of agricultural products. Since it has a huge amount of manifestation, it requires a lot of manpower. The Lack of skilled labour can also cause depletion of crops production rate. So the use of Technologies in agriculture reduces manpower drastically and increases efficiency. The production rate of crops in agriculture is based on various parameters like temperature, humidity, rain, etc., which are natural factors and are not controlled by farmers. The field of agriculture also depends on some factors like pests, disease, fertilizers, etc., which can be controlled by giving proper treatment to crops. Even though the use of pesticides can protect the crop, it may also have harmful effects on human health. So usage of technologies like quadcopter is an efficient process. But as it involves a huge amount of Initial and Operational cost, the quadcopters are replaced with Fixed Wing Drones. This paper depicts about the design and development of Fixed Wing Airplane known as AGRIWING, which combines all the desirable features of a conventional agricultural fixed wing such as mapping of farm, gathering heat signatures, etc., with the added capabilities of the autonomous fluid dispensing system, as in the Drone Spraying System with the advantages of Fixed Wing Airplane including reduced cost, improved flight time, robustness and more.

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Sanitization using Hexacopter Autonomous Drone

Ramesh¹,

Dharshini²,

Haridass³

et al. 2021

IOP Conf. Ser.: Mater. Sci. Eng.

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Multicopter are slowly finding its way into various industrial sector applications including security, oil & gas, public health, etc. Unmanned Aerial Vehicles provides faster and reliable solutions for many real time challenges. Spraying sanitizers using drone is one such solution which is effectively implemented during COVID-19 pandemic situation. Hexacopter is designed to carry up to 2 litres of sanitizer in its reservoir and the sanitizer spray system is designed to dispense the liquid as droplets at a constant flow rate. Hexacopter is made of carbon fibre and equipped with Pixhawk autonomous module as flight controller. The UAV can be operated in both manual and autonomous modes to increase the ease of operation for indoors as well as in outdoors sanitization process.

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CFD Simulation of Low-attitude Droplets Deposition Characteristics for UAV based on Multi-feature Fusion

Cited by 7 publications

References 9 publications

Design of Variable Spray System for Plant Protection UAV Based on CFD Simulation and Regression Analysis

Design of Variable Spray System for Plant Protection UAV Based on CFD Simulation and Regression Analysis

Emulation of Multi-Rotor Functionalities in Fixed Wing Airplane for Farm Based Land Surveillance with Controlled Fluid Dispersion System

Sanitization using Hexacopter Autonomous Drone

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