流动方式对航空煤油RP-3结焦的影响

吴瀚; 邓宏武; 徐国强; 琚印超; 孙纪宁

流动方式对航空煤油RP-3结焦的影响

北京航空航天大学能源与动力工程学院, 航空发动机气动热力国家级重点实验室,北京 100191

基金项目: 国家自然科学基金(50676005); 中央高校基本科研业务费专项资金(YWF-10-02-043)

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出版历程
- 收稿日期: 2010-05-25
- 修回日期: 2010-09-27
- 刊出日期: 2011-06-28

Effects of flow orientations on the coking characteristic of jet fuel RP-3

National Key Laboratory of Science and Technology on Aero-Engine Aero-themodynamics, School of Jet Propulsion,Beijing University of Aeronautics and Astronautics, Beijing 100191,China

摘要

摘要: 实验研究了航空煤油RP-3在不同流动方式下的结焦分布情况.实验中采用恒定热流的方式将流经单通道不锈钢管中的溶解氧饱和的航空煤油由127℃加热到427℃,系统压力5MPa,质量通量780kg/(m²·s),并利用“称质法”获得煤油结焦数据.实验结果表明,不同流动方式下,结焦速率随着温度升高先增大后减小,存在峰值区域;虽然结焦速率峰值点出现对应的外壁温不同,但是结焦速率分布曲线相似,呈现单波峰形态;结焦总量大体相当;重力的影响体现在结交峰值位置的偏移上.
- RP-3 /
- 热氧化 /
- 流动方式 /
- 结焦速率 /
- 峰值位置
Abstract: In order to investigate the effects of flow orientations on surface coke deposition of oxygen-saturation RP-3 fuel flowing through a single-channel heated stainless-steel tubes.The system pressure was 5 MPa and the mass flow rate was 780 kg/ (m²·s).Experiments were conducted for different tube orientations,namely:horizontal,vertical with flow from bottom to top and vice versa.High outlet temperature and high pressure were utilized to simulate actual working conditions.The amount of surface coke deposition was obtained by weighting method.The results show that,the deposition initially increases and then decreases with fuel temperature under different flow orientations,and the location of coking peak value moves by gravity along the experimental segment,but the shapes of surface coke deposition distribution curve are similar,and total deposition is the same.
- RP-3 /
- thermal oxidation /
- flow orientation /
- coke rates /
- peak position

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参考文献(12)

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