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In order to inhibit the flow separation on blade surface and improve the aerodynamic performance of the blade, the design scheme of installing vortex generator on the blade surface is proposed. Taking DU97-W-300 blade section with vortex generator as the research object, the orthogonal experimental design method is used to investigate the influences of height, length, installation angle, chord installation position, spacing and pitch of the vortex generator on the aerodynamic performance of the blade section, so as to determine the basic law of vortex generator parameter design. The results show that, the vortex generator parameters that affect the magnitude of aerodynamic performance of the blade are as follows: spacing, pitch, length, height, chord installation position, and installation angle of the vortex generator. The optimal vortex generator parameter combination law is: height of 0.75ξ (ξ is blade boundary layer thickness), length of 1.6ξ, installation angle of 20°, chord installation position is 10% blade chord length, spacing of 1.6ξ, pitch of 0.8ξ, which can increase the maximum lift coefficient of this blade by 40% and the maximum stall angle of attack by 9.5°.
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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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