Abstract Detailed experimental investigation has been conducted to study the single-phase (air-air) and two-phase (air-solid) flows through ejectors. An attempt is made to increase the amount of transported solids by introducing design modifications to the mixing section of the ejector. The mixing duct has been augmented by a tail section. Three different geometries of the mixing duct with tail section of ejector have been designed, fabricated and tested experimentally. The effects of the mixing duct and tail section shapes on the ejector performance have been investigated. In addition, the effects of air motive pressure and the solid particles mass flow rate on the static pressure distribution and the vacuum pressure produced have been also studied. The obtained results show that the geometry of convergent-constant-divergent for the mixing duct gives higher vacuum pressure and favourable performance of the ejector.

中文翻译：

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通过混合管和喷射器尾部的气固流：实验研究

摘要 已经进行了详细的实验研究以研究通过喷射器的单相（空气-空气）和两相（空气-固体）流动。试图通过对喷射器的混合部分进行设计修改来增加输送的固体量。混合管道增加了尾部。三种不同几何形状的带喷射器尾部的混合管道已经被设计、制造和实验测试。研究了混合管道和尾段形状对喷射器性能的影响。此外，还研究了空气动力压力和固体颗粒质量流量对静压分布和产生的真空压力的影响。