含水乙醇/RP-3航空煤油混合燃料的层流燃烧速度
Laminar burning velocity of aqueous ethanol/RP-3 aviation kerosene mixed fuel
刘宇 1周博 1谷午 1饶大为 1马洪安 1曾文1
作者信息
- 1. 沈阳航空航天大学航空发动机学院辽宁省航空推进系统先进测试技术重点实验室,沈阳 110136
- 折叠
摘要
采用定容燃烧实验装置获得初始压力为0.1 MPa、初始温度为450K、当量比为0.8～1.4工况下乙醇/RP-3航空煤油预混火焰和含水乙醇/RP-3航空煤油预混火焰的层流燃烧速度(LBVs),并分析了乙醇掺混比、乙醇含水量、当量比等因素对混合燃料层流燃烧速度的影响.研究表明:随着乙醇掺混比的增加,乙醇/RP-3航空煤油混合燃料层流燃烧速度增大;当RP-3航空煤油中乙醇掺混比一定时,随着乙醇含水量的增加,含水乙醇/RP-3混合燃料层流燃烧速度减小.由燃烧反应动力学分析可知,混合燃料的层流燃烧速度受动力学、热力学等的综合影响.本研究所获实验数据能够为生物乙醇燃料在航空发动机中的应用提供理论基础和技术支持.
Abstract
The laminar burning velocities(LBVs)of ethanol/RP-3 aviation kerosene and aqueous ethanol/RP-3 aviation kerosene premixed flames under the initial pressure of 0.1 MPa,initial temperature of 450 K and equivalence ratios of 0.8-1.4 were obtained by using a constant volume combustion experimental device,and the effects of ethanol blending ratio,volume fraction of water in ethanol and equivalence ratio on the LBV of the mixed fuel were analyzed.Results showed that the LBV of ethanol/RP-3 mixed fuel increased with the increase of ethanol blending ratio;when the ethanol blending ratio in RP-3 fuel was constant,the LBV of aqueous ethanol/RP-3 mixed fuel decreased with the increase of volume fraction of water in ethanol.From analysis of the combustion reaction kinetics,the LBV of the mixed fuel was affected by the combined effects of kinetics and thermodynamics.The experimental data obtained can provide a theoretical basis and technical support for the application of bio-ethanol fuel in aeroengine.
关键词
定容燃烧/RP-3航空煤油/含水乙醇/层流燃烧速度(LBV)/燃烧反应动力学Key words
constant volume combustion/RP-3 aviation kerosene/aqueous ethanol/laminar burning velocity(LBV)/combustion reaction kinetics引用本文复制引用
基金项目
国家自然科学基金(51606129)
辽宁省教育厅项目(LJKZ0181)
出版年
2024
NETL
NSTL
万方数据