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Fluid Dynamic Approaches for Prediction of Spray Drift from Ground Pesticide Applications: A Review

Se-woon Hong, Jinseon Park, Hanna Jeong, Seyeon Lee, Lakyeong Choi, Lingying Zhao, Heping Zhu
2021 Agronomy  
Spray drifts have been studied by mathematical models and computer simulations as an essential complement to lab and field tests, among which are fluid dynamic approaches that help to understand the transport  ...  From earlier fluid mechanical models to highly computational models, scientific advancement has led to a more realistic prediction of spray drift, but the current literature lacks reviews showing the trends  ...  For most arable and vegetable crops, the air-jets tend to be located above the crop producing a downward flow, while an upward flow is applied to fruit and tree crops by locating the sprayer within the  ... 
doi:10.3390/agronomy11061182 fatcat:4ofnkydmcfc4tg7jeqrb2zvicy

Advancements of Spraying Technology in Agriculture [chapter]

Fiaz Ahmad, Aftab Khaliq, Baijing Qiu, Muhammad Sultan, Jing Ma
2021 Technology in Agriculture [Working Title]  
Researchers are conducting experimental studies on the design, development and testing of precision spraying technologies for crops and orchards.  ...  For pesticide application, it is not the only sprayer that is essential, but all the parameters like the type and area of the plant canopy, area of a plant leaf, height of the crop, and volume of plants  ...  and air flow) along the adjustment facilities to match the geometry of the plant [19] .  ... 
doi:10.5772/intechopen.98500 fatcat:6dlol6ab5ja6vernmruhnp4p6a

Assessing Nozzle Geometry, Spacing and Height Effect on Pesticide Spray Characteristics and Swath from Ground and Aerial Sprayers

Samuel Appah, Mingxiong Ou, Weidong Jia, Eric Amoah Asante, Wanting Yang
2020 European Scientific Journal  
This review therefore analyses the effect of nozzle geometry, nozzle spacing and spraying height regimes on pesticide spray droplets characteristics from mechanical boom sprayers.  ...  The surface coverage and spray distribution are influenced by nozzle spacing and spraying height.  ...  Acknowledgement The authors wish to acknowledge the research funding agencies for the preparation of this article; the National Natural Science Foundation of China (grant number 31601676), the National  ... 
doi:10.19044/esj.2020.v16n30p103 fatcat:ufo2n2edsvfnnojgamyydqrbba

Development Status and Perspectives of Crop Protection Machinery and Techniques for Vegetables

Shilin Wang, Tao Xu, Xue Li
2022 Horticulturae  
Therefore, the design of efficient plant protection machinery and technology has become an urgent demand in order to ensure the quality and safety of vegetables.  ...  The disease and pest control of vegetables is dominated by chemical sprays, for now.  ...  Conflicts of Interest: The authors declare no conflict of interest. Horticulturae 2022, 8, 166  ... 
doi:10.3390/horticulturae8020166 fatcat:4dborncj2zdhrlh4i2gdtoy7cy

Opportunities and Possibilities of Developing an Advanced Precision Spraying System for Tree Fruits

Md Sultan Mahmud, Azlan Zahid, Long He, Phillip Martin
2021 Sensors  
Pesticide applications are an essential part of current agriculture, enhancing cultivated crop productivity and quality and preventing losses of up to 45% of the world food supply.  ...  In addition, air jet velocity, travel speed, wind speed and direction, droplet size, and canopy characteristics need to be considered for successful droplet deposition by the spraying system.  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/s21093262 pmid:34066785 fatcat:vrz63pghpraenb632n5fvmgxpe

Thermofluid Modelling of Large-Scale Orchards for Optimal Design and Control of Active Frost Prevention Systems

Ercan Atam, Se-Woon Hong, Alessia Arteconi
2020 Energies  
Next, the use of the developed parametric CTFD model was demonstrated through a case study to calculate the minimal thermal energy required to prevent frost under different frost levels in a test Prunus  ...  To that end, in this study, first, a novel and sophisticated parametric computational thermofluid dynamics (CTFD) model for orchard air thermal dynamics for different orchard parameters (such as fruit  ...  [14] investigated airflow inside tree canopies discharged from air-assisted sprayers through a sophisticated CFD modelling.  ... 
doi:10.3390/en13020378 fatcat:cxd5a4nxgbcjbb6omedej6gpkm

Prediction and classification of sugar content of sugarcane based on skin scanning using visible and shortwave near infrared

Nazmi Mat Nawi, Guangnan Chen, Troy Jensen, Saman Abdanan Mehdizadeh
2013 Biosystems Engineering  
doi:10.1016/j.biosystemseng.2013.03.005 fatcat:onnkzfpj3nghbam57r7mbmzs6e

CFD modeling of combustion of solid waste materials with low melting points [article]

Muhammad Usman Farid, Universitäts- Und Landesbibliothek Sachsen-Anhalt, Martin-Luther Universität, Evangelos Tsotsas, Andreas Bück
Disposal of waste, especially in the solid form, has been identified as a major problem around the globe.  ...  Sometimes the solid waste ix Table of Contents Acknowledgements .  ...  Silaen and Wang [107] presented a CFD modeling study in order to check the effect of different turbulence and devolatilization models in an entrained flow coal gasifier.  ... 
doi:10.25673/4876 fatcat:vg6g3oeklng5xljhdg7kg5wowy

Kiwifruit flower pollination : wind pollination efficiencies and sprayer jet applications [article]

Michael J. W. Hii, University Of Canterbury
Visualization of flow paths around a real kiwifruit flower in a wind tunnel compared well with the CFD predictions. The machine pollination employs a jet of air.  ...  CFD simulations of pollen-loaded air jets were carried out to study the effect of different jet-nozzle configurations, namely the jet direction onto the flower, nozzle-to-flower distance, diameter of nozzle  ...  We are also thankful for the advice and help from Peter Mulligan and Alistair Mowat, of Zespri. We acknowledge travel funds from Zespri and Canterbury CHEMECA Trust Fund, New Zealand.  ... 
doi:10.26021/1456 fatcat:qzfujpwmnrealkcujkcmkaky4u

International periodic scientific journal ONLINE SW J o u r n a l THE USE OF GRAPE DIETARY FIBER IN PRODUCTION OF DRY WHITE TABLE WINES

Averchenkov Vladimir, Tikhonova, Ageeva, Lisovets, Biryukov
2016 unpublished
Grinding extent of dietary fiber (3 and 5 mm) produced by infrared (IR) drying is superior in the quality to other samples.  ...  Studied the effect of dietary fiber produced from grape marc on the dynamics of fermentation of grape must.  ...  The methyl ester was produced for the study with camelina oil by the method described in [3] .  ... 

Volume 3 – Conference

12. IFK
ACKNOWLEDGEMENTS ACKNOWLEGEMENT The authors would like to thank the research group at the University of Michigan sharing the ideas on  ...  or driving in predefined crop rows (sprayer).  ...  Optimization of the form factor is the main goal of the mechanical se The Design Methodology The solid model of geometry was analysed through 3D CFD (Computational Fluid Dynamics) analysis, in order  ... 
doi:10.25368/2020.8 fatcat:3gjpbe6tffdjdn2ajfvqjduo6e

UKnowledge Heat and Mass Transfer in Baled Switchgrass for Storage and Bioconversion Applications Recommended Citation

Drew Schiavone
from air to a relatively dry crop (adsorption).  ...  Hence, an implementation of such elaborate spatial models (e.g., the geometry of every pore) is typically unfeasible.  ... 

Conference on Autonomous and Robotic Construction of Infrastructure Proceedings of the 2015 Conference on Autonomous and Robotic Construction of Infrastructure

David White, Ahmad Alhasan, Pavana Vennapusa
Additionally, we could not have completed this study without the help of our many technicians who worked tirelessly to assure that blocks were produced and cured in the manner prescribed.  ...  Tsinghua Science and Technology 19 (3) ACKNOWLEDGEMENTS The authors would like to acknowledge the Transatlantic Division of the US Army Corps of Engineers for funding this research study.  ...  In the first procedure, the images are directly used to produce 3D and 4D point cloud models. In the procedure shown in Figure 5b , the 4D BIM is used to assist with the data collection process.  ... 

Novel diesel particulate filters containing fine ceramic fibres

Alastair James Houston, Apollo-University Of Cambridge Repository, Apollo-University Of Cambridge Repository, Bill Clyne
A model of this type, on a hybrid particle-fibre-void composite material, has not been studied in the literature, and so offers a novel insight into the complex behaviour of such materials, practicable  ...  A simulation, modelling the particles and fibres as simplified spheres and cylinders, allows an understanding into the effect of porosity, fibre proportion, and the sizes of the particles and fibres on  ...  A steady state laminar flow CFD model was implemented such that one face was assigned to be the inlet, with a mass flow-rate of air of 1 x10 -11 kg s -1 across the entire surface, and the opposite face  ... 
doi:10.17863/cam.40728 fatcat:tdlyniiue5cnzat7ehuftnfhde

Proceedings of the 4th International Conference on Machine Control and Guidance (MCG) 19th - 20th March 2014 - Technische Universität Braunschweig, Germany, Institute of Mobile Machines and Commercial Vehicles, Institute of Flight Guidance, Institute of Geodesy and Photogrammetry: Conference Directors: Peter Hecker, Wolfgang Niemeier, Ludger Frerichs. Editors: Jan Schattenberg, Till-Fabian Minßen

Peter Hecker, Wolfgang Niemeier, Ludger Frerichs, Jan Schattenberg, Till-Fabian Minßen, Universitätsbibliothek Braunschweig
It captures images of the threshed material directly in the crop flow.  ...  Thus, the evaluation of the quality of harvested material and the machine adjustment are currently subject to uncertainties caused by human error.  ...  Special thanks go to Bernd Kammerbauer and Matthias Kirschner who have been adapting the software MiniGIS.  ... 
doi:10.24355/dbbs.084-201404300920-0 fatcat:e5y63lgb65fqpi23hcbbgv7wm4
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