| 姚康鸿1，金义1，郑妹2，张凯1，何小民1.射流式气动雾化喷嘴雾化性能试验研究[J].航空发动机,2020,46(2):75-80 |
| 射流式气动雾化喷嘴雾化性能试验研究 |
| Test Study on Spray Performance of Plain-jet Airblast Atomizer |
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| DOI： |
| 中文关键词: 射流式气动雾化喷嘴 雾化锥角 雾化粒径 气液比 空气流量 燃油流量 试验 航空发动机 |
| 英文关键词:plain-jet airblast atomizer spray cone angle SauterMean Diameter （SMD） gas-liquid ratio air flow rate fuel flow rate test aeroengine |
| 基金项目:研究生创新基地（实验室）开放基金（kfjj20170209）、工信部重点实验室基金（No.XCA16045）、航空科学基金
（20162852030）资助 |
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| 中文摘要: |
| 针对1 种带出口扩张段的射流式气动雾化喷嘴，将气液比的2 个影响因素空气流量及燃油流量分开，通过试验分析了
空气流量、燃油流量、气液2 相相对速度分别对雾化性能的影响规律。采用相位多普勒激光测试仪测试喷雾下游雾化粒径，通过
CCD 相机及片光源拍摄其雾化锥角。结果表明：空气流量相比于燃油流量，对该型气动雾化喷嘴的雾化性能影响更大；当气液比一
致时，气液2 相相对速度越大，雾化粒径越小，雾化锥角越大；当气液比为0～2 时，随气液比的增大，雾化锥角逐渐增大，雾化粒径
逐渐减小；在气液比趋近于2 时，雾化锥角达到最大值，雾化粒径达到最小值；当气液比大于2 时，雾化锥角略微减小，雾化粒径基
本保持不变。 |
| 英文摘要: |
| Aiming at a plain-jet airblast atomizer with an outlet expansion section，the air flow rate and the fuel flow rate of the gasliquid
ratio were separated. The effects of the air flow rate，the fuel flow rate and the relative velocity of gas-liquid two-phase on the spray
performance were analyzed by test. The spray downstream Sauter Mean Diameter（SMD）was measured by Doppler laser tester，and the spray
cone angle was photographed by CCD camera and sheet light source. The results show that the effect of air flow on the spray performance of
this type of airblast atomizer is greater than that of the fuel flow.When the gas-liquid ratio is the same，the larger the relative velocity of gasliquid
two-phase is，the smaller the SMD is and the larger the spray cone angle is. When the gas-liquid ratio is 0~2，the spray cone angle
increases and the SMD decreases with the increase of gas-liquid ratio. When the gas-liquid ratio approaches to 2，the spray cone angle
reaches the maximum value，and the SMD reaches the minimum value. When the gas-liquid ratio is greater than 2，the spray cone angle
decreases slightly，and the SMD remains basically unchanged. |
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