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The vitiation effects of water vapor and carbon dioxide on the autoignition characteristics of kerosene
Liang JH(梁金虎); Wang S(王苏); Zhang ST(张胜涛); Yue LJ(岳连捷); Fan BC(范秉诚); Zhang XY(张新宇); Cui JP(崔季平); Wang S(王苏)
Source PublicationActa Mechanica Sinica
2014-08
Volume30Issue:4Pages:485-494
ISSN0567-7718
AbstractIn ground tests of hypersonic scramjet, the high-enthalpy airstream produced by burning hydrocarbon fuels often contains contaminants of water vapor and carbon dioxide. The contaminants may change the ignition characteristics of fuels between ground tests and real flights. In order to properly assess the influence of the contaminants on ignition characteristics of hydrocarbon fuels, the effect of water vapor and carbon dioxide on the ignition delay times of China RP-3 kerosene was studied behind reflected shock waves in a preheated shock tube. Experiments were conducted over a wider temperature range of 800–1500K, at a pressure of 0.3MPa, equivalence ratios of 0.5 and 1, and oxygen concentration of 20%. Ignition delay times were determined from the onset of the excited radical OH emission together with the pressure profile. Ignition delay times were measured for four cases: (1) clean gas, (2) gas vitiated with 10% and 20% water vapor in mole, (3) gas vitiated with 10% carbon dioxide in mole, and (4) gas vitiated with 10% water vapor and 10% carbon dioxide, 20% water vapor and 10% carbon dioxide in mole. The results show that carbon dioxide produces an inhibiting effect at temperatures below 1300K when φ=0.5, whereas water vapor appears to accelerate the ignition process below a critical temperature of about 1000K when φ=0.5. When both water vapor and carbon dioxide exist together, a minor inhibiting effect is observed at φ=0.5, while no effect is found at φ=1.0. The results are also discussed preliminary by considering both the combustion reaction mechanism and the thermophysics properties of the fuel mixtures. The current measurements demonstrate vitiation effects of water vapor and carbon dioxide on the autoignition characteristics of China RP-3 kerosene at air-like O2 concentration. It is important to account for such effects when data are extrapolated from ground testing to real flight conditions.
KeywordIgnition Delay Vitiation Effect Kerosene Water Carbon Dioxide Shock Tube
Subject Area流体力学
DOI10.1007/s10409-014-0014-0
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Indexed BySCI ; EI ; CSCD
Language英语
WOS IDWOS:000340551700004
Funding OrganizationThe project was supported by the National Natural Science Foundation of China (90916017).
CSCD IDCSCD:5211751
DepartmentLHD高超声速推进技术
Classification二类
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/48905
Collection高温气体动力学国家重点实验室
Corresponding AuthorWang S(王苏)
Recommended Citation
GB/T 7714
Liang JH,Wang S,Zhang ST,et al. The vitiation effects of water vapor and carbon dioxide on the autoignition characteristics of kerosene[J]. Acta Mechanica Sinica,2014,30(4):485-494.
APA Liang JH.,Wang S.,Zhang ST.,Yue LJ.,Fan BC.,...&王苏.(2014).The vitiation effects of water vapor and carbon dioxide on the autoignition characteristics of kerosene.Acta Mechanica Sinica,30(4),485-494.
MLA Liang JH,et al."The vitiation effects of water vapor and carbon dioxide on the autoignition characteristics of kerosene".Acta Mechanica Sinica 30.4(2014):485-494.
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