Startseite Influence of inlet structure on combustion flow structure in magnesium powder fueled water ramjet engine
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Influence of inlet structure on combustion flow structure in magnesium powder fueled water ramjet engine

  • Wei Xu , Zhi-Long Yang , Yun-Kai Wu , Guo-Yu Ding , Rui Xue EMAIL logo , Jun-Li Liu EMAIL logo und Hai-Jun Sun
Veröffentlicht/Copyright: 12. Dezember 2023
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Abstract

Different inlet structures have a significant impact on the internal flow characteristics of a solid-magnesium powder water ramjet engine. Based on the magnesium-water reaction model, a computational fluid dynamics (CFD) method is applied to establish a numerical simulation method for the internal flow field of the engine, and the internal flow characteristics of the engine under different inlet structure conditions are studied. The simulation results show that high-temperature gas can effectively promote the ignition of magnesium powder at the top of the combustion chamber, while accelerating the evaporation of the first inlet water and increasing the combustion rate of magnesium powder. The secondary inlet has the most significant effect on the temperature inside the combustion chamber. When the secondary inlet flow rate increases towards the top of the combustion chamber, it increases the amount of heat absorbed by the evaporating water at the top of the chamber, thereby reducing the temperature at the top of the combustion chamber. However, when the flow rate is low, it results in insufficient oxidizer at the top of the combustion chamber, which is unfavorable for the combustion of magnesium powder.


Corresponding authors: Rui Xue and Jun-Li Liu, Key Laboratory for Strength and Vibration of Mechanical Structures, Shaanxi Engineering Laboratory for Vibration Control of Aerospace Structures, School of Aerospace, Xi’An Jiaotong University, Xi’An, 710049, China, E-mail: (R. Xue), (J. L. Liu)

Funding source: National Natural Science Foundation of China

Award Identifier / Grant number: (Grant No. 52376126)

Funding source: Natural Science Basic Research Program of Shaanxi Province

Award Identifier / Grant number: (Program No. 2022JM-231)

Funding source: Key independent Research Program of State Key Laboratory for Strength and Vibration of Mechanical Structures

Award Identifier / Grant number: (Grant No. SV2023ZD05)

  1. Research ethics: Not applicable.

  2. Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.

  3. Competing interests: The authors declare no conflicts of interest regarding this article.

  4. Research funding: This work was financially supported by National Natural Science Foundation of China (Grant No. 52376126), the Natural Science Basic Research Program of Shaanxi Province (Program No. 2022JM-231), Key independent Research Program of State Key Laboratory for Strength and Vibration of Mechanical Structures (Grant No. SV2023ZD05).

  5. Data availability: Not applicable.

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Received: 2023-09-05
Accepted: 2023-11-24
Published Online: 2023-12-12
Published in Print: 2024-08-27

© 2023 Walter de Gruyter GmbH, Berlin/Boston

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