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This paper provides technical support for the engineering application of hybir laminar flow control (HLFC)technology in drag reduction for general aircraft. A numerical investigation of HLFC technology for drag reduction on the vertical tail of the AG300 business aircraft is presented. The simulations are based on the Reynolds-Averaged Navier-Stokes (RANS) equations, employing the k-ω SST turbulence model coupled with the γ-transition model. The transition prediction method was validated using experimental data of the infinite swept NLF(2)-0415 airfoil, demonstrating high accuracy and reliability. This paper evaluates the drag reduction effects of uniform suction, non-uniform suction distributions, and reduced leading-edge sweep angle under suction conditions. The results indicate that HLFC can significantly reduce vertical tail drag, with further drag reduction achieved by decreasing the leading-edge sweep angle.However, to maintain flow stability, the suction intensity must be kept below a critical threshold.
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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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