Experimental and numerical investigation on hysteresis characteristics and formation mechanism for a variable geometry dual-mode combustor
Experimental and numerical investigation on hysteresis characteristics and formation mechanism for a variable geometry dual-mode combustor
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可变几何双模式燃烧室滞后特性及形成机制的实验与数值研究
DOI：
10.1016/j.ast.2017.03.040
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发表时间：
2017-08
影响因子：
5.6
通讯作者：
Bao Wen
中科院分区：
文献类型：
--
作者：
Feng Shuo;Chang Juntao;Zhang Chenlin;Wang Youyin;Ma Jicheng;Bao Wen
为了研究变几何双模燃烧室迟滞特性及形成机制，在马赫数为3、发散比为1.6~2.54、燃料当量比为0.6~1.0的变几何双模燃烧室中进行了一系列几何路径连续调节实验和数值模拟。实验结果表明，特征点的壁面静压力随着几何路径的连续变化存在明显的滞后现象。对于给定的特征点，随着发散比的增加，滞后变得更小。充分考虑了倾斜激波链运动与燃烧放热分布之间的相互作用，以解释滞后形成的机制。研究发现，迟滞现象是由隔振器中斜激波列运动的不稳定正反馈效应产生的。此外，还通过数值和实验研究了滞后对总压力损失、不可逆熵损失和燃烧性能的影响。因此，人们坚信，研究迟滞特性和形成机制对燃烧性能的影响，对于提高可变几何双模式燃烧器的燃烧性能，特别是对于大范围的飞行马赫数来说，具有非常重要的意义。
As part of our efforts to study the hysteresis characteristic and formation mechanism for a variable geometry dual mode combustor, a series of geometry path continuous adjustment experiments and numerical simulation were conducted in the variable geometry dual mode combustor with a Mach number of 3, a divergent ratio ranging from 1.6 to 2.54 and a fuel equivalence ratio ranging from 0.6 to 1.0. Experimental results indicated that the wall static pressure of feature points had an obvious hysteresis phenomenon with the geometry path continuous variation. For given feature points, the hysteresis becomes much smaller with the increasing of the divergent ratio. The interaction between the oblique shock train motion and combustion heat release distribution was adequately considered to explicate the mechanism of the hysteresis formation. It was found that the hysteresis phenomenon was produced from the unstable positive feedback effect of the oblique shock train motion in the isolator. Moreover, the effect of the hysteresis on the total pressure loss, irreversible entropy loss and combustion performance were investigated numerically and experimentally. It was therefore strongly believed that the study of the hysteresis characteristic and formation mechanism on the combustion performance could be very significant to improve combustion performance for the variable geometry dual mode combustor, especially for a wide range of flight Mach numbers.
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DOI：
10.1007/s11431-009-0181-6
发表时间：
2009-06
期刊：
Science in China Series E: Technological Sciences
影响因子：
--
作者：
Daren Yu;T. Cui;W. Bao
通讯作者：
Daren Yu;T. Cui;W. Bao
典型空腔超燃冲压发动机燃烧室冷流场的数值验证和参数研究
影响因子：
3.5
作者：
Wei Huang;Zhenguo Wang;Li Yan;Weidong Liu
通讯作者：
Weidong Liu
DOI：
10.1007/s10573-010-0054-0
发表时间：
2010-09
期刊：
Combustion, Explosion, and Shock Waves
影响因子：
--
作者：
V. Avrashkov;E. Metelkina;D. V. Meshcheryakov
通讯作者：
V. Avrashkov;E. Metelkina;D. V. Meshcheryakov
影响因子：
3.5
作者：
Betelin, V. B.;Smirnov, N. N.;Nerchenko, V. A.
通讯作者：
Nerchenko, V. A.
冲击运动非线性动态模型中的双稳态和迟滞
影响因子：
2.2
作者：
Tao Cui;Yong Wang;Daren Yu
通讯作者：
Daren Yu