Mode-locked rotating detonation waves: Experiments and a model equation.,Physical Review E

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Mode-locked rotating detonation waves: Experiments and a model equation.
Physical Review E ( IF 2.2 ) Pub Date : 2020-01-01 , DOI: 10.1103/physreve.101.013106
James Koch ₁ , Mitsuru Kurosaka ₁ , Carl Knowlen ₁ , J Nathan Kutz ₂

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Direct observation of a rotating detonation engine combustion chamber has enabled the extraction of the kinematics of its detonation waves. These records exhibit a rich set of instabilities and bifurcations arising from the interaction of coherent wave fronts and global gain dynamics. We develop a model of the observed dynamics by recasting the Majda detonation analog as an autowave process. The solution fronts become attractors of the engine, i.e., mode-locked rotating detonation waves. We find that denotative energy release competes with dissipation and gain recovery to produce the observed dynamics and a bifurcation structure common to other driven-dissipative systems, such as mode-locked lasers.

中文翻译：

锁模旋转爆轰波：实验和模型方程。

通过直接观察旋转的爆震发动机燃烧室，可以提取其爆震波的运动学特性。这些记录显示出由于相干波阵面和整体增益动力学的相互作用而引起的一组丰富的不稳定性和分支。通过将Majda爆轰类似物重铸为自动波过程，我们开发了观察到的动力学模型。溶液前沿成为发动机的吸引子，即锁模旋转爆轰波。我们发现，指示性能量释放与耗散和增益恢复竞争，以产生观察到的动力学和其他驱动耗散系统（如锁模激光器）共有的分叉结构。

更新日期：2020-01-10

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