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To study the breakup atomization and development process of kerosene propellant in crossflow under subsonic conditions, and to realize the accurate numerical simulation of fuel atomization, a kerosene jet in crossflow with average flux-to-momentum ratio q ranging from 7.9 to 46, and average Weg ranging from 5.6 to 120 is selected to enter the mainstream of the air under the velocity conditions of 11 subsonic uniformly incoming air main streams and the phenomenon of primary atomization under the action of crossflow is investigated by the Volume of FluidMethod and Adaptive Mesh Refinement method. The volume of the FluidMethod (VFM) method and Adaptive Mesh Refinement (AMR) method are used to investigate the primary atomization phenomenon under the jet's action in crossflow and verify the accuracy of the numerical simulation method by comparing it with the experimental results. The results show that jet fragmentation of kerosene propellant is mainly caused by surface tension, especially the Rayleigh-Taylor (R-T) instability plays a dominant role. In contrast, the surface fragmentation triggered by the Kelvin-Helmholtz (K-H) stability precedes the liquid column fragmentation caused by the R-T instability. The atomization process is negatively correlated with the mean gas Weber number, positively correlated with and strongly influenced by the mean flux-to-momentum ratio q, and finally an empirical equation for the jet penetration depth profile suitable for atomization in crossflow jet is obtained.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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