Effects of fuel variation and inlet air temperature on combustion stability in a gas turbine model combustor
Effects of fuel variation and inlet air temperature on combustion stability in a gas turbine model combustor
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燃料变化和入口空气温度对燃气轮机模型燃烧室燃烧稳定性的影响
DOI：
10.1016/j.ast.2019.05.052
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发表时间：
2019-09
影响因子：
5.6
通讯作者：
Lu Xingcai
中科院分区：
文献类型：
--
作者：
Chen Feier;Ruan Can;Yu Tao;Cai Weiwei;Mao Yebing;Lu Xingcai
通过实验研究了燃料变化和进气温度对燃气轮机模型燃烧室燃烧稳定性的影响。测试燃料涉及三种选定的单组份碳氢化合物，包括一种直链烷烃(正十烷)、一种支链烷烃(异辛烷)和一种环烷烃(甲基环己烷)。还选择了RP-3喷气燃料作为技术参考。对于所有的燃料，在固定当量比为0.86，入口空气温度在383~483K范围内变化的情况下进行了实验。结果表明，RP-3和正庚烷具有相似的稳定性行为。在较低的进口空气温度下，当燃烧室加入RP-3和正庚烷时，火焰稳定并稳定在燃烧室内。当进口空气温度超过阈值时，燃烧室就会转变为热声不稳定状态，这与火焰形状的大范围变化有关。另一方面，甲基环己烷火焰和异辛烷火焰在所有实验条件下都表现为热声不稳定燃烧，并且当入口空气温度从403K升高到423K时，观察到了独特的模式转变现象。另外，通过OH⁎化学发光成像观察到了附加的火焰动力学。从物理化学性质的差异出发，讨论了导致所测试燃料燃烧稳定性和火焰动力学差异的潜在机理。
In this study, influences of fuel variation and inlet air temperature on the combustion stability characteristics in a gas turbine model combustor were experimentally investigated. Test fuels involved three selected single component hydrocarbons, including one linear alkane (n-decane), one branched alkane (iso-octane) and one cyclic alkane (methylcyclohexane (MCH)). RP-3 jet fuel was also selected as a technical reference. For all the fuels, experiments were conducted at a fixed equivalence ratio of 0.86 and varying inlet air temperatures from 383 to 483 K. Results showed that RP-3 and n-decane exhibited similar stability behaviors. At low inlet air temperatures, when the combustor was fueled with RP-3 and n-decane, the flame was stabilized and anchored in the combustor. The combustor then shifted to thermo-acoustically unstable state when the inlet air temperature exceeded a threshold value, which was associated by large-scale flame shape variations. On the other hand, noticeable differences can be observed for MCH and iso-octane flames, which featured thermo-acoustically unstable combustion throughout all the tested conditions, and unique mode-shift phenomenon was observed when the inlet air temperature was raised from 403 K to 423 K. Additional flame dynamics was visualized by OH⁎chemiluminescence imaging. The underlying mechanisms that led to the differences in combustion stability and flame dynamics of the tested fuels were discussed with respect to their differences in physicochemical properties.
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影响因子：
4
作者：
P. Vicharelli;W. Lapatovich
通讯作者：
P. Vicharelli;W. Lapatovich
DOI：
10.1115/1.3239693
发表时间：
1984-06
影响因子：
1.5
作者：
A. Lefebvre
通讯作者：
A. Lefebvre
DOI：
10.1115/gt2015-43433
发表时间：
2015-06
期刊：
--
影响因子：
--
作者：
Bethany Huelskamp;B. Kiel;P. Gokulakrishnan
通讯作者：
Bethany Huelskamp;B. Kiel;P. Gokulakrishnan
DOI：
10.1115/1.4029173
发表时间：
2014-12
期刊：
--
影响因子：
--
作者：
M. Habib;Soufien Taamallah;Z. LaBry;A. Ghoniem;Santosh J. Shanbhogue
通讯作者：
M. Habib;Soufien Taamallah;Z. LaBry;A. Ghoniem;Santosh J. Shanbhogue
影响因子：
4.4
作者：
S. Kheirkhah;J. D. Cirtwill;P. Saini;Krishna Venkatesan;Adam M. Steinberg
通讯作者：
S. Kheirkhah;J. D. Cirtwill;P. Saini;Krishna Venkatesan;Adam M. Steinberg