超临界煤油超声速燃烧特性实验

推进技术 ›› 2006, Vol. 27 ›› Issue (1): 79-82.

超临界煤油超声速燃烧特性实验

范学军,俞刚

中国科学院力学研究所北京100080;中国科学院力学研究所北京100080

发布日期:2021-08-15
基金资助:
国家自然基金重点基金资助项目(10232060)

Experiments on supersonic combustion of supercritical kerosene

Inst.of Mechanics,Academia Sinica.,Beijing 100080,China;Inst.of Mechanics,Academia Sinica.,Beijing 100080,China

Published:2021-08-15

摘要/Abstract

摘要： 针对各种温度、压力下,马赫数2.5流场中超临界煤油的超声速燃烧性能进行了实验研究。研制并测试了一个新型二级煤油加热系统,该系统能够把0.8 kg的煤油在5.5MPa压力下加热至至950K而不产生严重的结碳。超声速燃烧试验表明,在相同的来流和燃料当量比条件下,超临界煤油的燃烧效率比室温煤油提高10%~15%,与氢气泡雾化的燃烧效率相当。

关键词: 煤油;超音速燃烧;超临界态+;二级加热器+

Abstract: Characteristics of supersonic combustion by injecting supercritical kerosene fuel into a Mach 2.5 crossflow at various preheat temperatures and pressures were investigated experimentally.A two-stage heating system has been designed and tested,which can prepare heated kerosene of 0.8 kg up to 950 K at pressure of 5.5 MPa with minimum/negligible fuel coking.Supersonic combustion tests under the similar stagnation conditions and kerosene equivalence ratios demonstrated that the combustion efficiency when using supercritical kerosene injection increased approximately 10%~20% over that using liquid kerosene injection,while it was comparable to that using effervescent atomization.

Key words: Kerosene;Supersonic combustion;Supercritical state~+;Two-stage heater~+

范学军,俞刚. 超临界煤油超声速燃烧特性实验[J]. 推进技术, 2006, 27(1): 79-82.