| 高压空气流中单个直射式喷嘴顺喷雾化特性的试验研究 |
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| 引用本文： | 杨桂祥,金如山.高压空气流中单个直射式喷嘴顺喷雾化特性的试验研究[J].航空动力学报,1987(3):243-245,284. |
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| 作者姓名： | 杨桂祥 金如山 |
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| 作者单位： | 北京航空学院
(杨桂祥)，北京航空学院(金如山) |
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| 摘 要： | 试验研究了在高压空气流中顺喷的单个直射式喷嘴雾化特性。试验结果表明索太尔平均直径随空气压力的增大单调地降低。采用收敛扩张喷管,使雾化区形成高压而又连续流动的流场,是高压下雾化试验研究的好方法。
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| 收稿时间： | 1986/10/1 0:00:00 |
EXPERIMENTAL STUDY ON ATOMIZATION OF PLAIN JET INJECTOR IN HIGH PRESSURE CO-AXIAL AIRFLOW |
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| Yang Guixian and jin Rushan.EXPERIMENTAL STUDY ON ATOMIZATION OF PLAIN JET INJECTOR IN HIGH PRESSURE CO-AXIAL AIRFLOW[J].Journal of Aerospace Power,1987(3):243-245,284. |
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| Authors: | Yang Guixian and jin Rushan |
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| Institution: | Beijing Institute of Aeronautics and Astronautics;Beijing Institute of Aeronautics and Astronautics |
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| Abstract: | An experimental study has been carried out on the effect of high ambient air pressure on the spray characteristics of a plain jet injector in coaxial high velocity airflow. The air pressures tested range from 1 to 16 atm, the airflow velocity from 60 to 120rn/s and the pressure drops of the injector tested from 0.2 to 2 MPa, Working fluid is water. The key feature of the experiment is to use a convergent-disvergent nozzle to maintain a high air pressure in the test chamber and at the same time to maintain a high airflow velocity in the atomi-zation zone. It totally eliminates the air recirculation and problem of slow droplet settling in a commonly used pressurized vessel for high pressure atomization. The results show that SMD decreases monotonuously with the increase of ambient air pressure, and at different air velocities the effect of the air pressure is different.The drop size distribution parameter N in Rasin-Rammler distribution decreasesslightly with the increase of ambient air pressure. |
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