Full
Outline
Based on a full-scale transparent nozzle internal flow and spray visualization experiment platform, an experimental study on the effect of taper of hole(taper factor of 1, 2 and 3) and number of hole(single, two and three holes) on the cavitation transient flow and spray in the nozzles was carried out for pure diesel(D100) and gasoline-diesel blended fuel of D20G80(20% diesel and 80% gasoline). The results show that the effect of the nozzle taper on cavitation and spraying in the nozzles is obviously different for the pure diesel and the gasoline-diesel blended fuel. The blended fuel has strong string cavitation with larger spray cone angle and fluctuations in the spray edge in the nozzles with all tested nozzle tapers, while the pure diesel only has string cavitation in the nozzle with a taper factor of 2. For the nozzles with a taper factor of 2, string cavitation occurs for both the pure diesel and the blended fuel in two-hole nozzles. It also occurs in the single-hole nozzle, but with less intense. Geometry-induced wall cavitation mainly occurs in the three-hole nozzle and spray edge fluctuations are stronger than that in the single-hole and two-hole nozzles.
5
1
| 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 |
关闭全屏
No. 86 Xueyuan South Road, Haidian District, Beijing
010-62662699(Operation and Technical Support)
qkjq@cast.org.cn
Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House
