Numerical analysis for the influent of reaction to ejector

Yunqiang Sun; Zebin Ren; Zhilong Huang; Haifeng Wang; Jinlei Lv; Jiming Chen

doi:10.1117/12.2605809

24 November 2021 Numerical analysis for the influent of reaction to ejector

Yunqiang Sun, Zebin Ren, Zhilong Huang, Haifeng Wang, Jinlei Lv, Jiming Chen

Proceedings Volume 12060, AOPC 2021: Advanced Laser Technology and Applications; 120600R (2021) https://doi.org/10.1117/12.2605809
Event: Applied Optics and Photonics China 2021, 2021, Beijing, China

Abstract

The influence of the flow state on the performance of the ejector is always a hot and difficult problem in the design of the ejector. Aiming at an integrated low-pressure cavity and ejector structure, this paper uses numerical simulation method to analyze the flow field characteristics of the ejector under the conditions of zero injection, secondary flow injection and secondary exothermic reaction flow injection. The relationship between the position of the first oblique shock and the outlet back pressure is given. The flow field structure and start-up process of the system in the cold secondary flow state are analyzed. Then, considering the exothermic reaction flow, the influence of the residual exothermic reaction in the ejector on the start-up performance of the system is analyzed. The results show that the reverse pressure gradient caused by residual exothermic reaction is the main factor affecting the start-up performance of the system.

Citation Download Citation

Yunqiang Sun, Zebin Ren, Zhilong Huang, Haifeng Wang, Jinlei Lv, and Jiming Chen "Numerical analysis for the influent of reaction to ejector", Proc. SPIE 12060, AOPC 2021: Advanced Laser Technology and Applications, 120600R (24 November 2021); https://doi.org/10.1117/12.2605809

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