湍流反应流系统中的爆炸性同步
Explosive synchronization in a turbulent reactive flow system
AI总结：
本文通过湍流反应流系统实验发现了具有迟滞现象的爆炸性同步转变，揭示了局部热释放振子与全局声场在振荡不稳定性起始点的同步机制并构建了数学模型。
摘要：
系统宏观状态发生突变动力学转变的现象日益受到关注。我们提供了真实世界复杂系统（即湍流反应流系统）中通过爆炸性同步发生突变的实验证据。与从初始非同步状态连续转变为同步状态的典型范式不同，该系统表现出具有迟滞现象的不连续同步转变。我们将湍流火焰在各空间位置的脉动热释放率视为局部耦合振子，这些振子与受限系统中的全局声场相耦合。我们分析了向振荡不稳定性状态转变期间这两个子系统之间的同步，并发现爆炸性同步发生在振荡不稳定性的起始点。此外，我们探索了子系统之间相互作用的底层机制，并构建了相应的数学模型。
英文摘要：
The occurrence of abrupt dynamical transitions in the macroscopic state of a system has received growing attention. We present experimental evidence for abrupt transition via explosive synchronization in a real-world complex system, namely a turbulent reactive flow system. In contrast to the paradigmatic continuous transition to a synchronized state from an initially desynchronized state, the system exhibits a discontinuous synchronization transition with a hysteresis. We consider the fluctuating heat release rate from the turbulent flames at each spatial location as locally coupled oscillators that are coupled to the global acoustic field in the confined system. We analyze the synchronization between these two subsystems during the transition to a state of oscillatory instability and discover that explosive synchronization occurs at the onset of oscillatory instability. Further, we explore the underlying mechanism of interaction between the subsystems and construct a mathematical model of the same.
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