Relevant bibliographies by topics / Centrifugal spray

Academic literature on the topic 'Centrifugal spray'

Author: Grafiati
Published: 30 May 2022
Last updated: 31 May 2022

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Journal articles on the topic "Centrifugal spray"

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Valdberg, A. Y., K. P. Makeeva, and N. E. Nikolaikina. "The study of the disperse composition of the liquid torch spray of centrifugal-jet nozzle." Izvestiya MGTU MAMI 6, no. 2-4 (December 20, 2012): 7–11. http://dx.doi.org/10.17816/2074-0530-68213.

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This paper presents the results of a research on dispersion of water spray of centrifugal spray nozzle. The values of average droplet size are defined and compared with the known one calculated before. There were made graphics of drops dispersed distribution and graphics where the experimental and calculated values for the arithmetic mean and median mass diameter. The obtained data allow to recommend the calculated dependencies for the assessment of medium-sized drops in the spray of centrifugal-jet spray nozzle.
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Cao, Na, Liang Cao, Chang Cai Han, Qing Xu, Lan Lei, Ji Ye Du, Jun Xue, and Zhan Hong Zhang. "A Study of the Spray Characterization from a Centrifugal Nozzle by Pulsed Laser Holography." Applied Mechanics and Materials 152-154 (January 2012): 846–51. http://dx.doi.org/10.4028/www.scientific.net/amm.152-154.846.

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Centrifugal nozzle is an important part of an areoengine in which fuel atomization has strong influence on engine performance. For investigating the fuel spray characteristics, a promising method named off-axis particle holographic measuring system is used here. Characteristics of the nonevaporating spray ejected from a new type of centrifugal nozzle which would be used in the near future are obtained under various injection conditions. By automatic analysis of the holographic reconstructed droplets images, a hollow-cone shape spray with most droplets concentrated in the surface of the cone is observed, and the spray cone angle, droplet sizes and their spatial locations in concerned region are obtained quantitativly. In the near region of the nozzle exit, droplets show greater SMD value, while at a certain distance from the nozzle, the droplets SMD differences become unconspicuous which shows a better atomization. These informations are helpful to understand characteristics of the centrifugal nozzle and offer a database for validating the spray simulation code.
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Raju, K., A. P. Harsha, and S. N. Ojha. "Effect of Microstructure on Wear Characteristics of Spray Cast Al-Si Alloys." Materials Science Forum 710 (January 2012): 545–50. http://dx.doi.org/10.4028/www.scientific.net/msf.710.545.

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In the present study, the effect of microstructure on the wear characteristics of spray cast Al-15Si and Al-20Si alloys has been investigated and compared with that of vertical axis centrifugal cast and chill cast alloys. The spray cast alloys have been subjected to Hot Isostatic Pressing for porosity reduction. HIPing has reduced the porosity in the spray cast Al-15Si and Al-20Si alloys from 19% to 8% and 19% to 2% respectively. The microstructures of spray cast alloys consisted of finely divided globular shaped Si particles with sizes varying from 2–10 µm. The Si particles have been distributed uniformly throughout the Al matrix. On the contrary coarse and segregated microstructures have been observed in vertical axis centrifugal cast and chill cast alloys. The sizes of primary and eutectic Si in vertical axis centrifugal cast alloys are smaller than that in chill cast alloys. The wear rates are the lowest for spray cast alloys and highest for chill cast alloys over a wide range of sliding velocity. The reasons for better wear resistance of spray cast alloys have been discussed in the light of the microstructural features evolved during spray casting.
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Gui, Miao Miao, Yun Hui Fang, Qing Chang Lin, Fei Yu Yu, Tian Xing Lin, and Xiu Xing Ma. "The Preparation Research of Powder Polycarboxylate Superplasticizer." Applied Mechanics and Materials 71-78 (July 2011): 677–83. http://dx.doi.org/10.4028/www.scientific.net/amm.71-78.677.

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This paper uses centrifugal spray drying process to prepare powder polycarboxylate superplasticizer. The best spray drying process: speed of centrifugal atomizer is 16000r/min, feed liquid temperature is 30°C, import / export air temperature of drying chamber is 200°C/80°C. It achieves a high concentration of polycarboxylate superplasticizer to prepare powder product. It solves the problem of sticky and low-performance of powder polycarboxylate superplasticizer during traditional preparation. Analyzing the structure of polycarboxylate superplasticizer before and after spray-drying by infrared spectroscopy, and verifying the conclusion through macroeconomic performance experiments.
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Zaror, C. A., and J. R. Pérez-Correa. "Model based control of centrifugal atomizer spray drying." Food Control 2, no. 3 (July 1991): 170–75. http://dx.doi.org/10.1016/0956-7135(91)90086-c.

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Wang, Yi, and De Ping Zhu. "A New Spray Desuperheater Structure Design." Advanced Materials Research 718-720 (July 2013): 1630–33. http://dx.doi.org/10.4028/www.scientific.net/amr.718-720.1630.

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A new spray desuperheater is designed, whose characteristic is using the combination technology of centrifugal nozzle and two-level venturi pipes. According to the application of the technology, the paper reveals the technical principle and structure design. The spray desuperheater has excellent spray atomization effect, and it can regulate the steam temperature in a wide range. So it can ensure the efficient heat exchanger and safe operation for boiler.
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Vásquez, R. A., and F. S. Costa. "SPRAY CONE ANGLES GENERATED BY A DUAL CENTRIFUGAL INJECTOR." Revista de Engenharia Térmica 13, no. 1 (June 30, 2014): 36. http://dx.doi.org/10.5380/reterm.v13i1.62067.

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A dual pressure swirl injector is characterized by two independent concentric chambers which can provide independent rotational levels to a single liquid or two different liquids. This paper compares theoretical, semi-empirical and experimental results concerning the spray cone angles formed by injection of water, ethanol and biodiesel through a dual pressure swirl injector. Data are obtained for injection of the same liquid through the primary and secondary chambers and for injection of ethanol in the primary chamber and biodiesel through the secondary chamber of the injector. Experimental data are obtained using photographic techniques and are analyzed by an image processing software developed in Matlab language.
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Arkhipov, V. A., A. P. Berezikov, A. S. Zhukov, I. R. Akhmadeev, and S. S. Bondarchuk. "Laser diagnostics of the centrifugal nozzle spray cone structure." Russian Aeronautics (Iz VUZ) 52, no. 1 (March 2009): 120–24. http://dx.doi.org/10.3103/s1068799809010218.

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Cheng, Xiao Su, Meng Qi Peng, and Yu Fa Zhong. "Process Factors Using Centrifugal Spray Drying to Prepare Bauxite Microspheres." Advanced Materials Research 399-401 (November 2011): 828–33. http://dx.doi.org/10.4028/www.scientific.net/amr.399-401.828.

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The centrifugal spray drying process of bauxite slurry was studied to investigate the influence of slurry solid content on the particle size distribution and the sphericity of the microspheres, and so was operation technology on average diameter and the sphericity of the microspheres. The optimal operation parameters are obtained to prepare high spherical microspheres bauxite with the diameter distribution of 100 μm and whose particle size distribution is narrow: the slurry solid content is 70 wt%, the dry air temperature is 250 °C, the rotation rate of spray head is 6000 rpm and the feed flow rate is 1 L/h in the experiments.
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Cui, Chun Xiang, Yan Chun Li, Tie Bao Wang, Shuang Jin Liu, and Suek Bong Kang. "Interaction Mechanism between In Situ Nb2C-V2C Nanoparticles and S/L Interface during the Rapid Solidification of Fe-Nb-V Alloy." Advanced Materials Research 415-417 (December 2011): 285–88. http://dx.doi.org/10.4028/www.scientific.net/amr.415-417.285.

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This paper deals with the interaction mechanism between in situ Nb2C-V2C nanoparticles and solid/liquid interface during the rapid solidification of Fe-Nb-V alloy ribbons. In situ Nb2C-V2C nanoparticles reinforced Fe alloy matrix composite were carried out by in situ reaction and melt spun with a high-speed centrifugal spray. According to the setting of a force balance for the in situ nanoparticles in front of the S/L interface during the high-speed centrifugal spray of Fe-Nb-V alloy melt as following: F = Fbuoyant force + Frepulsive + Fviscous force + Fcentrifugal force, authors get the critical velocity that S/L interface engulfs particles is proportional to the radius of particles. TEM observation indicates that the less the size of particle is, the more easily S/L interface engulfs particles.
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Dissertations / Theses on the topic "Centrifugal spray"

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Barratt, Mark Dennis. "Process-microstructure-property relationships in nickel-based preforms produced by centrifugal spray deposition." Thesis, University of Birmingham, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.288884.

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Davies, D. R. G. "Centrifugal spray deposition (CSD) : a process for making high speed steel and other preforms for hot working into rings and various shapes." Thesis, Swansea University, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.636368.

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Гончарук, Сергій Григорович, Сергей Григорьевич Гончарук, and Serhii Hryhorovych Honcharuk. "Пути упрочнения и уменьшения износа дисков и пленкообразователей центробежных распылительных устройств." Thesis, Сумский государственный университет, 2016. http://essuir.sumdu.edu.ua/handle/123456789/46848.

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Троснікова, Ірина Юріївна. "Спрямовано армовані композиційні матеріали систем Mo- Si-В, WC-W2C поліфункціонального призначення." Doctoral thesis, Київ, 2014. https://ela.kpi.ua/handle/123456789/9776.

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Souza, Edson José Joaquim de. "Concepção e desenvolvimento de correlações experimentais para simulação, controle e otimização de sprays gerados em atomizadores mecânicos-centrifugos." reponame:Repositório Institucional da UFPR, 2009. http://hdl.handle.net/1884/24022.

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Orientadora: Profa. Dra. Maria J.J.S. Ponte
Tese (doutorado) - Universidade Federal do Paraná, Setor de Tecnologia, Programa de Pós-Graduação em Engenharia - PIPE. Defesa: Curitiba, 07/07/2009
Bibliografia: fls. 146-150
Área de concentraçao: Engenharia e ciencia dos materiais
Resumo: Este trabalho trata do estudo de atomizadores mecânicos–centrífugos utilizados em sistemas de injeção eletrônica de combustíveis para motores de combustão interna. Foram estudados injetores para motores do tipo à centelha, que operam segundo o ciclo termodinâmico OTTO. Através de uma abordagem teórico-experimental estudouse o fenômeno da atomização responsável pela geração do spray em njetores. O mecanismo de formação de sprays caracteriza-se pela turbulência, quebra das forças de tensão superficial, formação de filmes instáveis, ligamentos, gotas e finalmente gotículas. À luz da mecânica de fluidos aplicada e da observação dos fenômenos envolvidos em cada fase da atomização, buscaram-se correlações e modelos matemáticos de predição das principais características do spray, especialmente o diâmetro estatístico das gotículas e seu campo de velocidades. A disponibilização dessas ferramentas matemáticas é contribuição efetiva não somente à melhoria desses dispositivos, mas também à simulação da vaporização do líquido e formação da mistura carburada em motores. A literatura afirma a relação entre o desempenho do sistema de injeção com a economia de combustível e a redução de emissões poluentes. A abordagem se prima pela exploração da experimentação científica em que foram utilizadas técnicas qualitativas e quantitativas de medição do tamanho de gotículas e sua velocidade. Além de técnicas otográficas sofisticadas como a de alta velocidade, empregaram-se métodos de medição ópticos avançados a raios Laser como a velocimetria por efeito Doppler (LDV) e medição do diâmetro por diferença de fase (PDPA). O planejamento de experimentos, bem como o tratamento de resultados, valeu-se do uso de métodos estatísticos de planejamento fatorial e regressão nãolinear. Finalmente apresentam-se as orrelações como ferramentas de engenharia para projeto e melhoria de injetores. Observou-se que nas correlações para o campo de velocidades os parâmetros adimensionais mais importantes são espectivamente os números de Euler, de Weber e Reynolds, nesta ordem. Finalmente apresenta-se uma análise da influência de cada parâmetro e a aplicabilidade das correlações propostas.
Abstract: Among all modern human activities with impact on the environment the most important is the fuel based transportation. Regulatory guidelines for greenhouse gases "GHG" emissions and vehicle efficiency have come up in many countries after the Kyoto protocol agreement. Because of fuel availability, price rise and emission control the goal of having a more efficient engine has became a must worldwide over the last ten years. In such a scenario alternative fuels like ethanol have returned on discussion again because of its successful use. In internal combustion engines a better atomized spray is one of the key features to chieve an efficient fuel-and-air mixture in the cylinder inlet. The injection system should keep a good spray pattern and overall performance. In conventional spark engines the spray is commonly generated by injectors with pressure or pressure-swirl atomizers in the fuel outlet. The present work focus on pressure-swirl atomizers used in modern electronic fuel injection systems for spark engines. By means of a heoretical-experimental approach, applied fluid mechanics and a statistically based testing programme the atomization process in injectors is studied. This work seeks a predictive mathematical statement for the relationship between the upstream liquid properties and the operating conditions with the spray main characteristics such as the droplet size and velocity field. Such an experimental approach demands injector’s selection, test rig design and construction, spray sizing methods, research and adjustment. The experimental approach is based upon two spray evaluation techniques: a qualitative evaluation, such as high speed photography and a non-intrusive quantitative method by Laser Doppler Velocimetry (LDV) for the spray velocity field and the Phase Doppler Particle Analyser (PDPA) for droplet sizing. Finally the predicting models are presented as an engineering tool for the design and development of fuel injectors because their importance for fuel consumption and emission control.
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Books on the topic "Centrifugal spray"

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Barratt, Mark Dennis. Process-microstructure-property relationships in nickel-based preforms produced by centrifugal spray deposition. Birmingham: University of Birmingham, 2002.

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Book chapters on the topic "Centrifugal spray"

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Kalmbach, Thomas, Simon Gramlich, and Manfred Piesche. "Movement and Hydrodynamic Instabilities of Particle-Laden Liquid Jets in the Centrifugal Field Influenced by a Gas Flow." In Process-Spray, 171–204. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-32370-1_5.

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Liu, Yunfei, and Jingjing Xu. "Installation Parameters Optimization of Hot Air Distributor During Centrifugal Spray Drying." In Lecture Notes in Electrical Engineering, 488–94. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-2341-0_61.

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Zhao, Y. Y. "A Simplified Model for Velocity and Temperature Evolution of Alloy Droplets in Centrifugal Atomisation and Spray Deposition." In Materials Science Forum, 4261–0. Stafa: Trans Tech Publications Ltd., 2005. http://dx.doi.org/10.4028/0-87849-960-1.4261.

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"Powder Metallurgy Processing." In Superalloys, 117–34. 2nd ed. ASM International, 2002. http://dx.doi.org/10.31399/asm.tb.stg2.t61280117.

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Abstract Gas turbine disks made from nickel-base superalloys are often produced using powder metallurgy (P/M) techniques because the alloy compositions normally used are difficult or impractical to forge by conventional methods. This chapter discusses the P/M process and its application to superalloys. It describes the gas, vacuum, and centrifugal atomization processes used to make commercial superalloy powders. It explains how the powders are consolidated into preforms or billets using hot isostatic pressing, extrusion, or a combination of the two. It also provides information on spray forming and consolidation by atmospheric pressure, and includes a section on powder-based disk components, where it discusses the general advantages of P/M as well as the effects of inclusions, carbon contamination, and the formation of oxide and carbide films due to prior particle boundary conditions. The chapter concludes with a detailed discussion on mechanically alloyed superalloy compositions, the product forms into which they are made, and some of the applications where they are used.
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Conference papers on the topic "Centrifugal spray"

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Špalek, Otomar, Vít Jirásek, Miroslav Censký, Jarmila Kodymová, and Irena Picková. "Spray generator of singlet oxygen with a centrifugal separation of liquid." In XVII International Symposium on Gas Flow and Chemical Lasers and High Power Lasers. SPIE, 2008. http://dx.doi.org/10.1117/12.816713.

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Hu, Jing, and Lei Guo. "Optimization Analysis of Flow Characteristics in Pipe of Spray Centrifugal Fan." In 2021 International Conference on Electronic Information Technology and Smart Agriculture (ICEITSA). IEEE, 2021. http://dx.doi.org/10.1109/iceitsa54226.2021.00072.

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Kodymova, J., Otomar Spalek, Vit Jirasek, and Miroslav Censky. "A Centrifugal Spray Singlet Oxygen Generator for a Chemical Oxygen-Iodine Laser." In 38th Plasmadynamics and Lasers Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2007. http://dx.doi.org/10.2514/6.2007-4622.

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Špalek, Otomar, Vít Jirásek, Miroslav Čenský, and Jarmila Kodymová. "Chemical oxygen-iodine laser with a centrifugal spray generator of singlet oxygen." In 18th International Symposium on Gas Flow & Chemical Lasers & High Power Lasers, edited by Tanja Dreischuh, Petar A. Atanasov, and Nikola V. Sabotinov. SPIE, 2010. http://dx.doi.org/10.1117/12.880740.

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Špalek, Otomar, Vít Jirásek, Miroslav Čenský, and Jarmila Kodymová. "Centrifugal spray singlet oxygen generator for a COIL with nitrogen as a buffer gas." In XIX International Symposium on High-Power Laser Systems and Applications, edited by Kerim R. Allakhverdiev. SPIE, 2013. http://dx.doi.org/10.1117/12.2010590.

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Shiga, Hirokazu, S. Takashige, A. Hermawan Dwi, A. Sultana, Shuji Adachi, and Hidefumi Yoshii. "Encapsulation of krill oil by spray drying." In 21st International Drying Symposium. Valencia: Universitat Politècnica València, 2018. http://dx.doi.org/10.4995/ids2018.2018.7323.

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An oil from Pacific krill (Euphausia pacifica) has a high content of PUFAs and phospholipids. The sediment was formed with homogenization of krill oil and maltodextrin (MD; dextrose equivalent (DE) = 19) solution using sodium caseinate, gum arabic, hydrolyzed whey protein or modified starch as a surfactant. Quillaja saponin could form the emulsion without the sediment. MD (28.5 wt%) was solubilized with distiller water (50 wt%) and mixed with krill oil (20wt%) and Quillaja saponin (1.5 wt%). The homogenized solution was spray-dried using Okawara-L8 spray dryer with a centrifugal atomizer. Spray-dried powder was evaluated in the oil-droplet size and surface-oil content. Keywords: krill oil, emulsion, Quillaja saponin, spray drying, PUFAs
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Barratt, M. D., Z. Shi, R. M. Ward, P. S. Grant, M. H. Jacobs, and J. Mii. "Microstructure, Macrostructure, and Modelling of the Centrifugal Spray Deposition of Large Diameter Ni Superalloy Preforms." In Superalloys. TMS, 2004. http://dx.doi.org/10.7449/2004/superalloys_2004_563_570.

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Liu, Yunfei, Jingjing Xu, and Tianyang Ye. "Parameters Optimization for Catalyst Centrifugal Spray Drying Process Based on BP Neural Network and Genetic Algorithm." In 2019 6th International Conference on Systems and Informatics (ICSAI). IEEE, 2019. http://dx.doi.org/10.1109/icsai48974.2019.9010174.

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Fan, Wei, Haoyi Song, Zhencen Fan, and Lin Zhao. "Experimental investigation on the effect of injection conditions on spray and atomization of a centrifugal nozzle." In 2nd International Symposium on Laser Interaction with Matter (LIMIS 2012), edited by Stefan Kaierle, Jingru Liu, and Jianlin Cao. SPIE, 2013. http://dx.doi.org/10.1117/12.2011287.

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Zhang, Tiejian, Guohui Cong, Yan Yan, Wei Zhang, and Xueling Wang. "Effects of Medium Containing Free Gas on Hydraulic Performance of Certain Single Stage Centrifugal Pump in 3rd Generation Reactor." In ASME 2017 Fluids Engineering Division Summer Meeting. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/fedsm2017-69481.

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Pumping medium containing gas has a negative impact on the centrifugal pump on mechanical properties (such as vibration, noise) and hydraulic performance, but also affect the accuracy of hydraulic test. in the GL2008-01 open letter, the United States Nuclear Regulatory (NRC) requires that some safety systems shall take into account the adverse effects of gas and the American Institute for Nuclear Research (NEI) and the Electric Power Research Institute (EPRI) pointed out the American Institute for Nuclear Research (NEI) and the Electric Power Research Institute (EPRI) pointed out that the gas in suction side shall not exceed the limit of 2% (volume ratio). In HPR1000, the 3rd generation reactor, it is the first time proposed that some systems are with long-term gas entrainment condition, and there is up to 3% (volume ratio) free gas in the horizontal centrifugal Spray Pump suction side water. In order to study the 3% gas entrainment condition effects on the hydraulic performance of Spray pump, a way is found to calculate the head drop by some equations and carried out a containing free gas hydraulic test. The results show that under the 3% gas condition, Spray pump head is 0.60% dropped by equation calculation and 0.66% dropped by test, comparing with no gas condition. The 3% gas effects on the Spray pump performance are very small. The reasons is that the structure of the Spray pump is well for vent during operation and the gas is not accumulate in the pump, so the performance of the pump has no effect.
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