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| 气波引射前向流道波转子设计及性能研究 |
| Design and Performance Study of Forward-curved Channel Wave Rotor for Gas Wave Ejector |
| 投稿时间：2020-03-19 修订日期：2020-05-14 |
| DOI： |
| 中文关键词: 引射器 波转子 前向流道 优化设计 数值模拟 实验验证 |
| 英文关键词: ejector, wave rotor, forward-curved channel, optimal design, numerical simulation, experimental validation |
| 基金项目:国家重点研发计划（2018YFA0704602） |
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| 中文摘要: |
| 针对气波引射过程流动损失问题，首先通过理论分析，依据波转子与气流间相对运动关系，采用流道进出口倾角正切值等于该位置气流轴向速度与转子转动线速度比值的方法设计一种新型前向流道波转子结构。然后利用Fluent软件进行数值模拟，发现当倾角满足上述正切关系时，引射过程中波转子内部及端口处流动分离及旋涡现象明显减少，流动损失降低，设备引射性能最优。最后，与直通道波转子进行对比实验研究，结果表明：各工况下前向流道波转子引射率和等熵效率与直通道波转子相比均有明显提升，且在倾角设计工况附近，设备引射性能及提升幅度达到峰值，引射率和等熵效率增幅比例均达40%，证明依据上述理论方法设计的前向流道波转子结构合理。 |
| 英文摘要: |
| First of all, based on the relative motion relationship between the wave rotor and the airflow, the forward-curved channel wave rotor is designed using the theoretical method that the tangent of the inclination angle of the channel is equal to the ratio of the axial velocity of the airflow at this position to the linear velocity of the wave rotor. Then through the numerical simulation method using ANSYS Fluent, it was found that when the inclination angle meets the tangent relationship, the flow separation and vortex phenomena in the wave rotor and the port are significantly reduced during the ejector process, the flow loss is reduced and the ejecting performance is optimal. Finally, through comparison and analysis with the experimental results of the straight channel wave rotor, it is found that the ejection rate and isentropic efficiency of the forward-curved channel wave rotor are significantly higher than that of the straight channel wave rotor under each operating conditions. Near the design condition of the inclination angle, the equipment's ejection performance and improvement reach peak, both the ejection rate and the isentropic efficiency increase by 40%, proving the rationality of the forward-curved channel wave rotor. |
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