A Computational Study of Sprays Produced by Rotary Cage Atomizers

Ryan, Sydney D.; Gerber, A. G.; Holloway, A. G. L.

doi:10.13031/2013.42232

Cited by 9 publications

(2 citation statements)

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“…According to liquid atomization forces, atomization can be divided into capillary tube atomization [131], hydraulic atomization (flat-fan nozzle, swirl nozzle, etc.) [131][132][133], centrifugal atomization with rotating disc (or rotating cage, rotating cup) [131,[134][135][136], aerodynamic atomization (air blast) [131,137], ultrasonic wave atomization [131] and electrostatic atomization [102,103,131], as well as the principle of droplet control and optimal technology [138]. In order to achieve specific spray performance, it is necessary to study nozzles with special requirements and design specific structures with desirable hydrodynamic characteristics, such as low-drift air-induction nozzles [139], variable rate nozzles [140], bypass nozzles to increase flow range [141], rotary cup atomizers for controllable droplets [135], intermittent flow control nozzles using pulse modulation [142], fan-shaped nozzles with a feedback channel to reduce droplet diameter and improve spraying uniformity [143], etc.…”

Section: Atomizing Nozzles and Nozzle Wearmentioning

confidence: 99%

A Review: Development of Plant Protection Methods and Advances in Pesticide Application Technology in Agro-Forestry Production

Zheng,

2023

Agriculture

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In this review, through reviewing the history of the struggle between human beings and plant diseases, insects and weeds, more specifically thoughts on plant protection in ancient Chinese agricultural books, the recognition of plant pests as a target and six types of plant protection methods and 36 subdivision measures are summarized. Then, we focus on the development overview of pesticide application technology and conduct a systematic review by combining the development timeline of pesticide application and key technologies including performance measurement and the simulation and modeling of pesticide-spraying systems. Finally, three suggestions for further research are proposed from the perspectives of human beings’ and environmental health, sustainable and eco-friendly application media and efficient application equipment systems in plant protection.

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Section: Atomizing Nozzles and Nozzle Wearmentioning

confidence: 99%

A Review: Development of Plant Protection Methods and Advances in Pesticide Application Technology in Agro-Forestry Production

Zheng,

2023

Agriculture

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“…This can be done through laser-pulse imaging and with high-speed cameras. It is worth noting that PIV and micro-PIV have been used in rotary bell atomization to measure the shaping air velocity and the droplet velocity in the flow field [30][31][32][33]. To our knowledge, there are no archival articles that reported the near cup droplet and ligament velocities using PIV methods.…”

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confidence: 99%

Study of Near-Cup Droplet Breakup of an Automotive Electrostatic Rotary Bell (ESRB) Atomizer Using High-Speed Shadowgraph Imaging

et al. 2018

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Electrostatic Rotary bell (ESRB) atomizers are used as the dominant means of paint application by the automotive industry. They utilize the high rotational speed of a cup to induce primary atomization of a liquid along with shaping air to provide secondary atomization and transport. In order to better understand the fluid breakup mechanisms involved in this process, high-speed shadowgraph imaging was used to visualize the edge of a serrated rotary bell at speeds varying between 5000 and 12,000 RPM and with a water flow rate of 250 ccm. A multi-step image processing algorithm was developed to differentiate between ligaments and droplets during the primary atomization process. The results from this experiment showed that higher bell speeds resulted in a 26.8% reduction in ligament and 22.3% reduction in droplet Sauter Mean Diameters (SMD). Additionally, the ligament (ranging from 40 to 400 µm) diameters formed bimodal distributions, while the droplet (ranging from 40 to 300 µm) diameters formed a normal distribution. Velocities were also measured using particle tracking velocimetry, in which size-dependent velocities could then be computed. Droplet velocities were affected more by rotational speed than droplet SMD, while ligaments were affected by other factors than the rotational speed and ligament SMD.

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Numerical simulation of spray drift and deposition from a crop spraying aircraft using a CFD approach

Zhang

Tang

Chen

et al. 2018

Biosystems Engineering

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A Computational Study of Sprays Produced by Rotary Cage Atomizers

Cited by 9 publications

References 0 publications

A Review: Development of Plant Protection Methods and Advances in Pesticide Application Technology in Agro-Forestry Production

A Review: Development of Plant Protection Methods and Advances in Pesticide Application Technology in Agro-Forestry Production

Study of Near-Cup Droplet Breakup of an Automotive Electrostatic Rotary Bell (ESRB) Atomizer Using High-Speed Shadowgraph Imaging

Numerical simulation of spray drift and deposition from a crop spraying aircraft using a CFD approach

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