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ISSN Печать: 1044-5110
ISSN Онлайн: 1936-2684
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REVIEW OF FUEL SPRAY DISTRIBUTIONS TO PREDICT PERFORMANCE OF ROTARY ATOMIZERS IN A SLINGER GAS TURBINE COMBUSTOR
Краткое описание
A research program was pursued on a rotary fuel nozzle commonly called a "slinger" atomizer for gas turbine application in order to characterize its spray distribution. The main advantage to be expected from this type of nozzle is a more uniform spray distribution leading to a more evenly distributed exit temperature at the combustor exit, thus providing a longer turbine life. In the course of this project, an in-depth open literature review was completed on rotary atomizers to find suitable correlations for an adequate spray distribution to eventually validate computational fluid dynamics (CFD) simulations to assess various potential injector configurations. After a substantial review of available correlations for the most promising types of rotary atomizers, i.e., flat disks, and plain (unperforated) and perforated cups, many uncertainties and inconsistencies were observed between reported test results and generated correlations to predict the average droplet size and a Rosin-Rammler spray distribution. A significant effort was devoted to validate and compare these found correlations in relation to their range of validity, to the flow regime, and to the measurement method for droplet diameters which showed as the most significant unknown parameters leading researchers to generate unreliable correlations. Ultimately after a thorough analysis, when comparing these three types of rotary atomizers for a given geometry and operating conditions, corresponding to a small typical gas turbine, the smallest SMD (based on idle condition) is achieved by the perforated cup operating in supercritical film mode, followed very closely by the plain cup, the flat disk, and the perforated cup operating in subcritical mode.
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Sahu Srikrishna, Chakraborty Arnab, Maurya Dalton, Coriolis-induced liquid breakup and spray evolution in a rotary slinger atomizer: Experiments and analysis, International Journal of Multiphase Flow, 135, 2021. Crossref
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Sun Daoan, Cai Wenzhe, Li Chunying, Lu Jian, Experimental study on atomization characteristics of high-energy-density fuels using a fuel slinger, Energy, 234, 2021. Crossref
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Yao Shu-Lei, Lei Xue-Lin, Wang Run-Zi, He Cen-Yao, Zhang Xian-Cheng, Tu Shan-Tung, A novel cold expansion process for improving the surface integrity and fatigue life of small-deep holes in Inconel 718 superalloys, International Journal of Fatigue, 154, 2022. Crossref
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Cohen Ariel Y., Sattarov Artemii, Claramunt Kilian, Anker Jan E., Romagnosi Luigi, Baux Yannick, Hirsch Charles, Simulation and analysis of an aero-engine combustor with a slinger fuel injection system, International Journal of Turbo & Jet-Engines, 2021. Crossref
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Cohen Ariel Y., Sattarov Artemii, Claramunt Kilian, Anker Jan E., Romagnosi Luigi, Baux Yannick, Hirsch Charles, Simulation and analysis of an aero-engine combustor with a slinger fuel injection system, International Journal of Turbo & Jet-Engines, 2021. Crossref
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Chakraborty Arnab, Sahu Srikrishna, Maurya Dalton, Effect of orifice size on liquid breakup dynamics and spray characteristics in slinger atomizers, Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, 236, 6, 2022. Crossref
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Seo Yechan, Ryu Gyongwon, Shim Hyeonseok, Lee Jeekeun, An experimental study on the low-temperature spray characteristics of aviation Jet A-1 fuel with rotational speeds in a slinger-type atomizer, Fuel, 331, 2023. Crossref