| Citation: | YU Xiaobing, CHEN Si, HE Xiaomin, et al. Effects analysis of RP-3 and RP-5 fuels on atomization characteristics of pressure-swirl atomizer[J]. Journal of Aerospace Power, 2023, 38（5）：1058-1066 doi: 10.13224/j.cnki.jasp.20220904
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In order to explore the effects of RP-5 and RP-3 fuels on the atomization performance of dual-orifice pressure-swirl atomizer, the research on the effects of properties such as flow rate characteristics, cone angle, Sauter mean diameter (SMD) and droplet velocity was carried out for the two kinds of fuels under different fuel supply pressures. The results showed that the flow rate of the RP-5 fuel nozzle was larger than that of the RP-3 fuel. The main fuel line flow differed by about 5%, and the primary fuel line flow differed by about 2%. The nozzle atomization cone angles of RP-5 and RP-3 fuels were basically the same. When the primary fuel supply flow rate was less than 8 kg/h, the SMD of RP-5 fuel was greater than that of RP-3 fuel. When the flow rate was greater than 8 kg/h, the SMD of RP-5 and RP-3 fuels were basically the same. With the continuous increase of the main and primary fuel flows, the SMD of RP-5 fuel was larger than that of RP-3 fuel and the difference continued to increase. With the increase of fuel supply pressure, the droplet velocity of RP-5 fuel was significantly higher than that of RP-3 fuel, all showing an “M”-shaped distribution.
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