| 引用本文: | 黄利亚,薛鸿涵,张家瑞,等.固体火箭冲压发动机气固两相掺混燃烧过程评价方法.[J].国防科技大学学报,2024,46(6):1-10.[点击复制] |
| HUANG Liya,XUE Honghan,ZHANG Jiarui,et al.Evaluation method of gas-solid two-phase mixed combustion process in solid rocket ramjet[J].Journal of National University of Defense Technology,2024,46(6):1-10[点击复制] |
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| 固体火箭冲压发动机气固两相掺混燃烧过程评价方法 |
| 黄利亚,薛鸿涵,张家瑞,孟梁,杨和 |
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(国防科技大学 空天科学学院, 湖南 长沙 410073)
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| 摘要: |
| 为了合理地评价固体火箭冲压发动机补燃室内一次燃气/空气掺混燃烧过程,提出一种基于颗粒质量浓度的固体火箭冲压发动机掺混燃烧过程评价方法。建立发动机数值模拟方法并通过了地面试验验证；针对不同工况条件下补燃室掺混燃烧过程,通过数值模拟,分析对比了不同定义方式掺混度与燃烧效率的变化趋势。结果表明,提出的颗粒掺混度与颗粒燃烧效率二者间显示出最大程度的相关性,不同工况下的平均最大信息系数达到了0.916 3。一次燃气/空气掺混与燃烧过程体现以下相关性规律:颗粒燃烧效率随颗粒掺混度的增大而增加,当颗粒掺混度超过一定阈值后,颗粒燃烧效率保持相对稳定。最后通过试验验证了该规律。 |
| 关键词: 颗粒掺混度 气固两相 掺混燃烧 固体火箭冲压发动机 燃烧效率 |
| DOI：10.11887/j.cn.202406001 |
| 投稿日期：2023-08-01 |
| 基金项目:国家自然科学基金创新研究群体资助项目(T2221002) |
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| Evaluation method of gas-solid two-phase mixed combustion process in solid rocket ramjet |
| HUANG Liya, XUE Honghan, ZHANG Jiarui, MENG Liang, YANG He |
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(College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China)
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| Abstract: |
| In order to reasonably evaluate the primary gas/air mixing combustion process in the secondary combustion chamber of solid rocket ramjet, an evaluation method of mixing combustion process of solid rocket ramjet based on particle mass concentration was proposed. Numerical simulation method of engine was established and verified by ground test. Aiming at the mixing combustion process in the afterburner under different working conditions, the changing trend of mixing degree and combustion efficiency in different definitions was compared by numerical simulation. Results show that the proposed particle mixing degree and particle combustion efficiency shows the greatest correlation, and the average maximum information coefficient reaches 0.916 3 under different working conditions. Moreover, the primary gas/air mixing and combustion process shows the following correlation laws:the particle combustion efficiency increases with the increase of particle mixing degree, and when the particle mixing degree exceeds a certain threshold, the particle combustion efficiency remains relatively stable. And the law is verified by experiments. |
| Keywords: particle mixing degree gas-solid two-phase mixing combustion solid rocket ramjet combustion efficiency |
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