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A high-performance diffuser section was designed based on polynomial function centerline and area ratio flow channel modeling method. The lip smoothing method based on the combination of the fuselage and the diffuser section,and the unequal interpolation of the B-spline of the incision, is used to obtain the basic configuration of the submerged inlet.The basic configuration design parameters is adjusted to obtain inlet configurations with different inlet area and position.Subsequently the inlet preliminary optimal configuration is obtained based on CFD numerical simulation evaluation.Whereafter fine design and numerical simulation evaluation of the inlet were carried out to obtain the final optimal configuration, which achieved a total pressure recovery coefficient of 0.9137 at Mach number of 0.85 with the matching point of inlet and engine reached. The maximum absolute value of the distortion coefficient DC60 under all specified states was 0.4448, meeting the requirements of the intake duct design indicators. The research results could provide certain technical references for the design of submerged inlet of various aircraft.
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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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