Article
Thermodynamics
Hongjun Sun, Yikun Luo, Hongbing Ding, Jinxia Li, Chenrui Song, Xixi Liu
Summary: The impaction-pin spray nozzle was investigated for its atomization characteristics, with results showing that droplet size and velocity are influenced by liquid pressure drop and nozzle orifice diameter. Prediction models for Sauter mean diameter and analysis of atomization efficiency were proposed.
EXPERIMENTAL THERMAL AND FLUID SCIENCE
(2021)
Article
Thermodynamics
Longchao Yao, Libin Yu, Xiaodan Lin, Yingchun Wu, Jun Chen, Chenghang Zheng, Xuecheng Wu, Xiang Gao
Summary: The study developed a method using high-speed digital off-axis holography to visualize and measure burning ethanol droplets in the atomization process. Results showed that new secondary droplets formed during the process have larger sizes and smaller velocities over time. Lagrangian measurements using 3D droplet tracking algorithm were performed and showed good accordance with previous studies.
COMBUSTION AND FLAME
(2021)
Article
Thermodynamics
Dmitry Gvozdyakov, Andrey Zenkov
Summary: Experimental study shows that the addition of ethyl or isoamyl alcohol in coal-water slurries can improve atomization technology, reduce droplet velocities, and increase the concentration of small droplets. These findings have significant practical value for the application of three-component suspensions in thermal power engineering.
Article
Mechanics
Siyu Chen, Nasser Ashgriz
Summary: This study aimed to develop a correlation for the droplet size distribution of pressure swirl nozzles, measuring droplet sizes under different conditions and developing a mixture distribution with two lognormal distributions to fit the data. The correlation parameters are related to the Kelvin-Helmholtz wavelength and sheet thickness, which can be used to determine the Sauter Mean diameter and other spray statistics.
INTERNATIONAL JOURNAL OF MULTIPHASE FLOW
(2022)
Article
Plant Sciences
Wanting Yang, Wei Zhong, Weidong Jia, Mingxiong Ou, Xiang Dong, Tie Zhang, Suming Ding, Li Jiang, Xiaowen Wang
Summary: This study demonstrates through experiments that hydrophobic components in pesticides significantly affect the morphology and process of atomization fragmentation, and the fragmentation mechanism of emulsion spray is a perforation mechanism. Compared to water spray, the presence of pesticides increases droplet size and spray angle, improves the uniformity of droplet size distribution but reduces breakup length.
FRONTIERS IN PLANT SCIENCE
(2023)
Review
Pharmacology & Pharmacy
M. Matuszak, M. Ochowiak, S. Wlodarczak, A. Krupinska, M. Doligalski
Summary: Aerosol therapy is an increasingly popular method of drug administration due to its advantages over other methods such as injection and oral methods. Understanding the basic principles and applications of aerosol therapy is crucial for effective treatment. Factors such as the physicochemical properties of the sprayed system, the design and correct application of medical inhalers, and inhalation dynamics play a significant role in the effectiveness of inhalation. Respiratory system diseases are prevalent and growing rapidly, leading to a rise in the availability of new spraying devices and pharmaceutical drugs. Analyzing the characteristics of aerosol droplets is essential in determining the effectiveness of the atomization process and drug delivery to the respiratory tract. The presented literature review provides valuable insights for understanding the spraying process and selecting appropriate medical inhalers for liquids with specific rheological properties.
INTERNATIONAL JOURNAL OF PHARMACEUTICS
(2022)
Article
Engineering, Chemical
Lingzhen Kong, Jiaqing Chen, Tian Lan, Huan Sun, Kuisheng Wang
Summary: This study analyzed the primary breakup process of liquid jet column, droplet size and velocity distribution, as well as the hydrodynamic characteristics of gas flow in a tubular gas-liquid atomization mixer. The results showed that the gas flow rate is the main influencing parameter for droplet size and distribution uniformity in atomization.
CHINESE JOURNAL OF CHEMICAL ENGINEERING
(2021)
Article
Agriculture, Multidisciplinary
Carlos A. Renaudo, Diego E. Bertin, Veronica Bucala
Summary: This contribution presents the development and validation of a coupled atomization-spray drift model suitable for different types of nozzles. The model provides a simple simulation tool that can predict the ground deposition spray drift of a nozzle using a minimum number of easily accessible input data.
PRECISION AGRICULTURE
(2022)
Article
Thermodynamics
Yu Zhang, Songmei Yuan, Lizhi Wang
Summary: The study found that uniform capillary waves and low cavitation intensity during ultrasonic atomization contribute to a narrower droplet size distribution; a bimodal droplet size distribution was observed with increased liquid and assisted gas flow rates; droplet size does not continuously increase or decrease with increasing input power and liquid viscosity.
EXPERIMENTAL THERMAL AND FLUID SCIENCE
(2021)
Article
Engineering, Chemical
Xiaoying Wang, Xiaohui Zuo, Junfeng Wang, Wei Zhang, Haojie Xu, Dongbao Wang, Yan Zhang, Tianyue Zhao
Summary: This study discusses the mechanism and influencing factors of preparing microspheres using electrostatic spray, providing theoretical guidance for their preparation.
CHEMICAL ENGINEERING SCIENCE
(2022)
Article
Agronomy
Yuan Zhong, Ye Jin, Shaoqing Xu, Xiangrui Liu, Jianli Song
Summary: Thrips are challenging pests in mango production due to their resistance to pesticides, hidden locations, and short developmental time. This study tested the use of tank-mix adjuvants Qi Gong (QG) and the thrips attractant Lv Dian (LD) in combination with a UAV sprayer for thrips control. The results showed that QG and LD reduced surface tension and contact angle, improving droplet spreading. The addition of QG increased deposition coverage by 31.5% and efficacy by 18.24% and 8.03% at florescence and the young fruit stage, respectively. LD increased efficacy by 24.56% and 14.38% at florescence and the young fruit stage, respectively. These findings provide a scientific basis for using UAVs to control mango thrips.
Article
Food Science & Technology
Martha L. Taboada, Doll Chutani, Heike P. Karbstein, Volker Gaukel
Summary: This study aimed to investigate the changes in oil droplet size in whey protein-stabilized emulsions during a spray drying process. It was found that droplet breakup and coalescence during atomization and coalescence during drying are crucial factors influencing the final product quality and stability.
FOOD AND BIOPROCESS TECHNOLOGY
(2021)
Article
Engineering, Chemical
Simon Wachter, Tobias Jakobs, Thomas Kolb
Summary: The study compared three different nozzle flow configurations and found that liquid sheet configurations resulted in smaller droplet sizes compared to liquid jet configuration. A nozzle with identical orifice areas was used in experiments to ensure constant velocities and momentum flows. The influence of gas velocity, dynamic viscosity of the liquid, and nozzle configuration on droplet sizes and primary breakup was investigated.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Agriculture, Multidisciplinary
Jonathan Fabula, Ajay Sharda, Joe D. Luck, Edwin Brokesh
Summary: The study found that the pulse width modulation spraying system performs well in maintaining pressure and droplet size, but there are still issues to be improved in terms of hydraulic variations and response speed.
COMPUTERS AND ELECTRONICS IN AGRICULTURE
(2021)
Article
Engineering, Chemical
Pei Xiong, Shihao He, Facheng Qiu, Zhiliang Cheng, Xuejun Quan, Xingran Zhang, Wensheng Li
Summary: The study showed that under depressurized conditions, droplets exhibited a uniform state in the axial direction and a disordered distribution in the radial direction in the near-field region; velocity gradient still existed in the far-field region; the initial diameter had a significant impact on temperature decrease rate.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2021)