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首页> 外文期刊>Aerospace science and technology >Spray characteristics of a liquid-liquid coaxial swirl atomizer at different mass flow rates
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Spray characteristics of a liquid-liquid coaxial swirl atomizer at different mass flow rates

机译：不同质量流量下液液同轴旋流雾化器的喷雾特性

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摘要

An experimental investigation is performed to explore the characteristics of sprays produced by a liquid-liquid coaxial swirl injector in a non-combusting environment. Phase Doppler anemometry is used for the measurement of velocity and Sauter Mean Diameter of droplets across and along the injection axis for various inner- and outer mass flow rates. Results of the combined spray are compared with those of inner- and/or outer spray alone. The results indicate that the inner injector has a larger influence on the flow field of the combined spray compared to the outer one. Further, the maximum velocity of the combined spray is close to the center of the spray thickness and the velocity decreases downstream of the nozzle. However, the maximum Sauter Mean Diameter of droplets along the injection axis moves to the outer periphery of the spray and increases downstream. Furthermore, the combined spray flow field is self-similar in terms of velocity and the average Sauter Mean Diameter of the droplets.
机译：进行了实验研究，以探索在非燃烧环境中液-液同轴旋流喷射器产生的喷雾的特性。相位多普勒风速仪用于测量各种内部和外部质量流率下，穿过和沿注入轴的液滴的速度和Sauter平均直径。将组合喷雾的结果与单独内部和/或外部喷雾的结果进行比较。结果表明，与外部喷射器相比，内部喷射器对组合喷雾的流场影响更大。此外，组合喷雾的最大速度接近喷雾厚度的中心，并且速度在喷嘴的下游减小。但是，液滴的最大Sauter平均直径沿喷射轴移动到喷雾的外围，并在下游增加。此外，组合的喷雾流场在速度和液滴的平均Sauter平均直径方面是自相似的。

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