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The flow regulator is the key component to realize the thrust regulation of liquid propellant rocket engine. The dynamic model of the flow regulator is established according to the structure and working principle of the flow regulator of a hydrogen-oxygen engine, and the simulation calculation model of the flow regulator is established by using AMESim software. The simulation work is carried out by using the simulation model of the flow regulator: calculating the flow characteristics of the regulator under different working conditions, verifying the steady-flow characteristics of the regulator, simulating and analyzing the dynamic characteristics of the regulator, and analyzing the influence of the structural parameters on the dynamic characteristics of the regulator. The simulation results reveal the flow and dynamic characteristics of the flow regulator, and provide a direction for the improvement and optimization of the flow regulator.
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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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