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1. Numerical investigation of the dynamic erosion behavior in fluidic oscillators with a periodic oscillating jet

Author:
Lubo Tang; Shaohe Zhang; Xinxin Zhang; Jianming Peng; Usman Shabir
Source:
Powder technology 2022 v.395 pp. 634-644
ISSN:
0032-5910
Subject:
nozzles,   etc   ; methodology; particle size; powders; solids;     Show all 5 Subjects
Abstract:
... Fluidic oscillators (FOs) containing no moving parts have received extensive attention in recent decades. Applications with FOs in some complex conditions are generally characterized by a high-speed jet of particle-laden flow that periodically switches between two parallel channels. This oscillating flow makes FOs prone to erosion. Using the CFD method, this study investigated the dynamic erosion ...
DOI:
10.1016/j.powtec.2021.10.011

2. Replicating the activation time of electronically controlled watermist system nozzles in B-RISK

Author:
M. Spearpoint; C. Hopkin; Y. Muhammad; W. Makant
Source:
Fire safety journal 2022 v.130 pp. 103592
ISSN:
0379-7112
Subject:
nozzles,   etc   ; fire safety; fires; journals; models; sprinklers; testing;     Show all 7 Subjects
Abstract:
... This paper presents two series of enclosure fire experiments in which the activation time of electronically controlled watermist system nozzles and concealed sprinklers have been obtained. The first series experiments were aligned to the procedure given in the BS 8458 standard whereas the second series were configured to give slower growing fires than in the standard test. The activation of the tw ...
DOI:
10.1016/j.firesaf.2022.103592

3. The Behaviour of Water-Mists in Hot Air Induced by a Room Fire: Effect of the Initial Size of Droplets

Author:
H. M. Iqbal Mahmud; Graham Thorpe; Khalid A. M. Moinuddin
Source:
Fire 2022 v.5 no.4 pp. -
ISSN:
2571-6255
Subject:
nozzles,   etc   ; air; droplets; energy; evaporation; heat; mists; models; smoke; temperature;     Show all 10 Subjects
Abstract:
... This paper presents work on investigating the effect of the initial size of water mist droplets on the evaporation and removal of heat from the fire-induced hot gas layer while travelling through the air in a compartment. The histories of the temperature, diameter and position of droplets with different initial diameters (varied from 100 µm to 1000 µm) are determined considering surrounding air te ...
DOI:
10.3390/fire5040116

4. Influence of Fines Content on the Stability of Volcanic Embankments under Rainfall and Earthquake

Author:
Trong Nam Nguyen; Shima Kawamura; Minh Hieu Dao; Takumi Inaba
Source:
Water 2022 v.14 no.13 pp. -
ISSN:
2073-4441
Subject:
nozzles,   etc   ; earthquakes; geophysics; mechanical properties; permeability; rain; volcanic soils; water;     Show all 8 Subjects
Abstract:
... This study aims to investigate the effects of fine content on the mechanical behavior of embankments constructed from volcanic soil subjected to rainfall and earthquake. To accomplish this purpose, a series of 1 g model experiments on slopes using Komaoka volcanic coarse-grained soils as materials was conducted with a spray nozzle and shaking table. In the experiments, shear strain, acceleration, ...
DOI:
10.3390/w14132096

5. A novel simplified precooled airbreathing engine cycle: Thermodynamic performance and control law

Author:
Zhengping Zou; Yifan Wang; Pengcheng Du; Lichao Yao; Shunhua Yang; Wanzhou Zhang; Jiamao Luo
Source:
Energy conversion and management 2022 v.258 pp. 115472
ISSN:
0196-8904
Subject:
nozzles,   etc   ; administrative management; air; aircraft; combustion; energy conversion; helium; hydrogen; liquids;     Show all 9 Subjects
Abstract:
... The precooled airbreathing engine is a promising propulsion concept for horizontal takeoff and landing hypersonic aircraft. The helium closed cycle has been introduced in the precooled airbreathing engine such as the Synergetic Air-Breathing Rocket Engine to enhance safety and thermal efficiency of the engine, whereas increasing the system complexity inevitably. To achieve a better compromise betw ...
DOI:
10.1016/j.enconman.2022.115472

6. Construction of a theoretical model for fan nozzles with precise atomization angles for plant protection

Author:
Chongchong Chen; Shougen Li; Xiaoyi Wu; Yongjun Zheng; Yaxiong Wang; Feng Kang
Source:
Chemosphere 2022 v.287 pp. 132017
ISSN:
0045-6535
Subject:
fan nozzles,   etc   ; atomization; forestry; industry; liquids; pest control; plant protection; theoretical models;     Show all 8 Subjects
Abstract:
... The fan nozzle is widely used in the process of pest control in agriculture and forestry. The spray angle of the nozzle is an important characterization parameter in the atomization of liquids. The spray angle of the nozzle is an important characterizing parameter in the liquid atomization process. It affects the flow field at the exit of the nozzle, thereby affecting the size and velocity of the ...
DOI:
10.1016/j.chemosphere.2021.132017

7. Characteristics on the Spatial Distribution of Droplet Size and Velocity with Difference Adjuvant in Nozzle Spraying

Author:
Xinpeng Li; Liping Chen; Qin Tang; Longlong Li; Wu Cheng; Peng Hu; Ruirui Zhang
Source:
Agronomy 2022 v.12 no.8 pp. -
ISSN:
2073-4395
Subject:
fan nozzles,   etc   ; adjuvants; agronomy; air; atomization; databases; droplet size; droplets; interferometers; pesticide application;     Show all 10 Subjects
Abstract:
... The spatial distribution of droplet size and velocity affects the deposition and distribution on the target. In order to investigate the influence of different adjuvant and pressures on the spatial distribution of droplet size and velocity in atomization area of different nozzles, air induction flat fan nozzle IDK120-03, multi-range flat fan nozzle LU120-03 and anti-drift flat fan nozzle AD120-03 ...
DOI:
10.3390/agronomy12081960

8. Study on water spraying distribution to improve the energy recovery performance of indirect evaporative coolers with nozzle arrangement optimization

Author:
Xiaochen Ma; Wenchao Shi; Hongxing Yang
Source:
Applied energy 2022 v.318 pp. 119212
ISSN:
0306-2619
Subject:
nozzles,   etc   ; air; carbon; cooling; dehumidification; energy; energy recovery; mathematical models; sustainable technology; wettability;     Show all 10 Subjects
Abstract:
... In response to the worldwide call for energy conservation and carbon emission reduction, indirect evaporative cooling as a green and environmentally friendly technology has been extensively researched and developed. In the practical application of this technology, the spray nozzle arrangement results in different wettability factors of the wet channel surface, which accordingly has a significant i ...
DOI:
10.1016/j.apenergy.2022.119212

9. Optimization of Induction Charging of Water Droplets to Develop an Electrostatic Spray Scrubber Intended for Poultry Particulate Matter Mitigation

Author:
Reyna Madison Knight; Xiaochuan Li; Jeb Stuart Hocter; Bo Zhang; Lingying Zhao; Heping Zhu
Source:
Journal of the ASABE v.65 no.4 pp. 815-824
ISSN:
2769-3287
Subject:
nozzles,   etc   ; air pollutants; droplets; electric potential difference; electrodes; mass flow; particulates; poultry; regression analysis; sprayers;     Show all 10 Subjects
Abstract:
... HighlightsInduction charging of water droplets by an ESS showed greatest CMRs using an 80° tapered edge flat spray nozzleCMR of 0.578 mC kg-1 achieved with a water mass flow rate of 0.397 kg min-1 and an applied voltage of -11.6 kVChanges in water conductivity did not significantly affect measured droplet CMRsAbstract. Particulate matter (PM) is a prominent air pollutant in poultry facilities. One ...
DOI:
10.13031/ja.14913

10. Spray atomisation in multiphase flows with reference to tank mixes of agricultural products

Author:
Gautham Krishnan; Steven A. Cryer; Jason E. Turner; Nikhil Sasi Rajan
Source:
Biosystems engineering 2022 v.223 pp. 232-248
ISSN:
1537-5110
Subject:
fan nozzles,   etc   ; atomization; droplet size; droplets; emulsions; ligaments; liquids; mechanistic models; oils; surface tension; viscosity; wind;     Show all 12 Subjects
Abstract:
... First-principle models describing the breakup of liquid sheets into droplets are used to screen spray adjuvants and agricultural tank mix partners to eliminate combinations that might negatively impact droplet size, reducing the need for extensive experimental testing. An agent-based model is developed to predict droplet spectra following spray atomisation from a flat-fan nozzle for a continuous o ...
DOI:
10.1016/j.biosystemseng.2022.09.001

11. Influence of Broadcast Nozzle Design and Weed Density on Dicamba Plus Glyphosate Deposition, Coverage, and Efficacy in Dicamba-Resistant Soybean

Author:
Madison D. Kramer; Travis R. Legleiter
Source:
Frontiers in agronomy 2022 v.4 pp. -
ISSN:
2673-3218
Subject:
nozzles,   etc   ; Digitaria sanguinalis; Eleusine indica; agronomy; cover crops; dicamba; droplets; glyphosate; postemergent weed control; rye; soybeans; weeds;     Show all 12 Subjects
Abstract:
... Dicamba injury to sensitive soybean and other broadleaf crops due to drift is a major issue. Dicamba label restrictions have been created to mitigate the off-target movement of dicamba. One restriction is the mandated use of low-drift nozzles to spray dicamba; these nozzles produce large droplet spectrums and minimize the production of driftable fines. Experiments were conducted to evaluate herbic ...
DOI:
10.3389/fagro.2022.903669

12. The impact of SiO2 nanoparticles on the dilational viscoelastic properties of water-nonionic surfactant-fuel interface

Author:
Qian Zhang; Zhiwei Guo; Yujie Yang; Yanxiang Li; Chuanfang Yang; Wangliang Li
Source:
Colloids and surfaces 2022 v.643 pp. 128757
ISSN:
0927-7757
Subject:
nozzles,   etc   ; adsorption; droplets; electrostatic interactions; films (materials); hydrophobicity; modulus of elasticity; oils; sulfur; surface tension; surfactants; viscoelasticity;     Show all 12 Subjects
Abstract:
... Surfactants in ultra-low sulfur diesel (ULSD) can improve the stability of the emulsified water droplet by forming a thin film at the water-fuel interface. Emulsified water droplets block the oil spray nozzle and break down the engine, which need to be removed. For colliding emulsified water droplets, surfactant film with high viscoelastic modulus provides an obstacle to their coalescence. Micro/n ...
DOI:
10.1016/j.colsurfa.2022.128757

13. Deep-Learning-Based Microfluidic Droplet Classification for Multijet Monitoring

Author:
Eunsik Choi; Kunsik An; Kyung-Tae Kang
Source:
ACS applied materials & interfaces 2022 v.14 no.13 pp. 15576-15586
ISSN:
1944-8252
Subject:
nozzles,   etc   ; cameras; droplets; neural networks;     Show all 4 Subjects
Abstract:
... Inkjet printing, the deposition of microfluidic droplets on a specified area, has gained increasing attention from both academia and industry for its versatility and scalability for mass production. Inkjet printing productivity depends on the number of nozzles used in a multijet process. However, droplet jetting conditions can vary for each nozzle due to multiple factors, such as the surface wetti ...
DOI:
10.1021/acsami.1c22048

14. Computational fluid dynamic simulation of a pulse-width modulated spray nozzle

Author:
Zachary Chapman; Jeffrey Doom
Source:
Journal of agricultural engineering 2021 v.52 no.1 pp. 1104
ISSN:
1974-7071
Subject:
nozzles,   etc   ; agricultural industry; fluid mechanics; sprayers;     Show all 4 Subjects
Abstract:
... Computational fluid dynamics (CFD) is a useful tool used by engineers in many industries to study fluid flow. A relatively new industry to adopt the use of CFD is the agricultural industry. A spray nozzle commonly used in agricultural spraying, the Teejet 110-degree nozzle (TeeJet Technologies, 2020), was simulated. A method was developed to pulse the spray. A user-defined function was used to def ...
DOI:
10.4081/jae.2021.1104

15. Experimental Studies on the Influence of Negatively Buoyant Jets on Flow Distribution in a 135-Degree Open Channel Bend

Author:
Xueming Wang; Colin D. Rennie; Abdolmajid Mohammadian
Source:
Water 2022 v.14 no.12 pp. -
ISSN:
2073-4441
Subject:
nozzles,   etc   ; exhibitions; flow; particle image velocimetry; water;     Show all 5 Subjects
Abstract:
... The present paper aims to investigate the evolution of velocity fields as well as secondary flows in an open channel bend under the influence of negatively buoyant jets. A 135-degree open channel bend was used for experiments, and the jet nozzle was located along the outer bank in the straight section upstream of the bend. Efforts were made to specify the flow structures with high precision measur ...
DOI:
10.3390/w14121898

16. Task Space Model Predictive Control for Vineyard Spraying with a Mobile Manipulator

Author:
Ivo Vatavuk; Goran Vasiljević; Zdenko Kovačić
Source:
Agriculture (Basel) 2022 v.12 no.3 pp. -
ISSN:
2077-0472
Subject:
nozzles,   etc   ; agriculture; algorithms; cameras; canopy; robots; vines; vineyards;     Show all 8 Subjects
Abstract:
... In this paper, a Model Predictive Control (MPC)-based approach for vineyard spraying is presented, able to adapt to different vine row structures and suitable for real-time applications. In the presented approach, the mobile base moves along a row of vines while the robotic arm controls the position and orientation of the spray nozzle. A reference lawnmower pattern trajectory is generated from the ...
DOI:
10.3390/agriculture12030381

17. Two-phase spray cooling for high ambient temperature data centers: Evaluation of system performance

Author:
Ranjith Kandasamy; Jin Yao Ho; Pengfei Liu; Teck Neng Wong; Kok Chuan Toh; Sunshine Jr Chua
Source:
Applied energy 2022 v.305 pp. 117816
ISSN:
0306-2619
Subject:
nozzles,   etc   ; ambient temperature; durability; energy; heat; water flow;     Show all 6 Subjects
Abstract:
... A lab-scale spray cooled rack system with a server and simulated heaters, operating with near-ambient temperature coolant of approximately 30 °C, was developed for data center cooling application. This system has significant energy saving potential as it eliminates the need for a chiller unit, which is usually necessary in conventional air-cooling schemes. The system was designed to dissipate a ma ...
DOI:
10.1016/j.apenergy.2021.117816

18. Visualization of the evolution of bubbles in the spray sheet discharged from the air‐induction nozzle

Author:
Chen Gong; Dongyang Li; Can Kang
Source:
Pest management science 2022 v.78 no.5 pp. 1850-1860
ISSN:
1526-498X
Subject:
fan nozzles,   etc   ; air; bubbles; droplet size; pest management;     Show all 5 Subjects
Abstract:
... BACKGROUND: The air‐induction nozzle greatly reduces drift potential by increasing spray droplet size compared with a standard flat‐fan nozzle. The current study aims to reveal the mechanism behind the formation of large droplets through the air‐induction nozzle from the aspect of bubble evolution in the spray sheet. RESULTS: Bubble break‐up leads directly to the formation of perforations because ...
DOI:
10.1002/ps.6803

19. Equation-oriented methods for design optimization and performance analysis of radial inflow turbines

Author:
Brede A.L. Hagen; Roberto Agromayor; Petter Nekså
Source:
Energy 2021 v.237 pp. 121596
ISSN:
0360-5442
Subject:
nozzles,   etc   ; algorithms; energy; mass flow; models; prediction; system optimization;     Show all 7 Subjects
Abstract:
... This paper presents methods for design optimization and performance analysis of radial inflow turbines. Both methods are formulated in an equation-oriented manner and involve a single mathematical problem that is solved by an efficient, gradient-based optimization algorithm. In addition, the comparison of the model output with experimental data showed that the underlying mean-line flow model accur ...
DOI:
10.1016/j.energy.2021.121596

20. Effect of working pressure and spacing of nozzles on the quality of spraying distribution

Author:
Fabiano Griesang; Ana Beatriz Dilena Spadoni; Pedro Henrique Urah Ferreira; Marcelo da Costa Ferreira
Source:
Crop protection 2022 v.151 pp. 105818
ISSN:
0261-2194
Subject:
fan nozzles,   etc   ; models; objectives; plant protection; pressure; sampling; spray booms;     Show all 7 Subjects
Abstract:
... The correct placement of the crop protection product on the target depends on the adequate distribution provided by the spray nozzles. In this research, the objective was to verify the influence of the working pressure and spacing between nozzles on the quality of the spray distribution. It was analyzed the nozzles jets concerning symmetry, opening angle and flow rate. Two methodologies for determ ...
DOI:
10.1016/j.cropro.2021.105818