航空煤油替代燃料模型热物性

裴鑫岩; 侯凌云; 莫崇康; 董宁

doi:10.13224/j.cnki.jasp.2015.09.010

航空煤油替代燃料模型热物性

doi: 10.13224/j.cnki.jasp.2015.09.010

清华大学航天航空学院, 北京 100084

基金项目:

国家自然科学基金(51176093)

详细信息

作者简介:
裴鑫岩(1987-),男,内蒙古包头人,博士生,主要从事航空发动机煤油主动冷却技术的研究与设计.

中图分类号: V312⁺1
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出版历程
- 收稿日期: 2014-03-06
- 刊出日期: 2015-09-28

Thermo-physical properties for surrogate models of aviation kerosene

School of Aerospace Engineering, Tsinghua University, Beijing 100084, China

摘要

摘要: 研究基于国产航空煤油RP-3液相组分数据,提出了单组分、简化3组分和详细13组分3种替代燃料模型,并对采用3组分替代模型计算得到的燃料密度、黏度、导热率、比热容4个热物性参数进行了在不同温度(300~1000K)和压力(1~15MPa)状态下的分析.结果表明,燃料的物性在超临界压力下,随着温度升高,密度减小,黏性降低,热导率则先降后增,而比热容逐渐增大,同时,在拟临界温度附近,燃料热物性均发生变化剧烈,比热容在不同压力下对应不同峰值点,在3MPa下最大;压力的变化会使得拟临界温度发生改变,给密度的变化程度、比热容的峰值分布和热导率的大小带来一定的影响.采用3组分替代模型预测燃料热沉,经实验验证,其物理热沉吻合较好.
- 航空煤油 /
- 再生冷却 /
- 替代燃料模型 /
- 热物性 /
- 拟超临界温度
Abstract: Based on the liquid-phase product analysis of aviation kerosene RP-3, three kinds of surrogate models, including single-specie, three-species and 13-species surrogate were proposed. The investigations covered the temperatures ranged from 300 to 1000K under the pressures from 1 to 15MPa. The distributions of the four thermo-physical properties were calculated under supercritical pressure conditions with temperature rise and decrease in density, viscosity and thermal conductivity, as well as specific heat increase. Drastic changes of thermo-physical properties occurred near the pseudo-critical temperature, especially for the specific heat under the pressure of 3MPa. The variation in pressure will change critical temperature location and has a certain influence on distributions of density and thermal conductivity, as well as the peak value of specific heat. The heat sink of RP-3 calculated from the three-species surrogate is in good agreement with the experiments.
- aviation kerosene /
- regenerative cooling /
- surrogate model /
- thermo-physical properties /
- pseudo-critical temperature

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参考文献(15)

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