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Outline
To investigate the influence of operating parameters on the atomization performance of external‑mix air‑atomizing nozzles and determine the optimal operating parameters for achieving the best atomization effect，a combined method of finite element model construction and optimization calculation was adopted for relevant research.Using gas inlet pressure，liquid inlet pressure，and liquid kinematic viscosity as optimization variables，and atomization cone angle and outlet flow coefficient as optimization objectives，an orthogonal experiment was designed and conducted.Based on the orthogonal experimental data，a response surface surrogate model was established，and this surrogate model was optimized using genetic algorithm，followed by simulation verification and comparative analysis of results.The results show that gas inlet pressure，liquid inlet pressure，and liquid kinematic viscosity all have significant effects on nozzle atomization performance；when the gas inlet pressure is 0.057 2 MPa，liquid inlet pressure is 0.111 2 MPa，and liquid kinematic viscosity is 0.057 3 Pa·s，the nozzle atomization performance reaches its optimum.Compared with the original model，the atomization cone angle increases by 34.62%，and the outlet flow coefficient improves by 49.36%.The research can provide references for the setting of operating parameters for nozzles.
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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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