论文标题
在二维主动夜毒中活跃和流体动力湍流的共存
Coexistence of active and hydrodynamic turbulence in two dimensional active nematics
论文作者
论文摘要
在活跃的列中液晶中，活性能够驱动称为主动湍流的混沌时空流。主动湍流通过理论和实验工作来表征为低雷诺数现象。我们表明，在二维中，仅主动强迫能够触发流体动力湍流，从而导致活动和惯性湍流的共存。这种类型的流程发展起到足够活跃和扩大流动对准的命名。我们观察到，流动对准参数的延伸列和较大值的综合效应导致弹性能谱的扩大，从而促进了动能的生长，能够触发逆向能量级联反应。
In active nematic liquid crystals activity is able to drive chaotic spatiotemporal flows referred to as active turbulence. Active turbulence has been characterized through theoretical and experimental work as a low Reynolds number phenomenon. We show that, in two-dimensions, the active forcing alone is able to trigger hydrodynamic turbulence leading to the coexistence of active and inertial turbulence. This type of flows develops for sufficiently active and extensile flow-aligning nematics. We observe that the combined effect of an extensile nematic and large values of the flow-aligning parameter leads to a broadening of the elastic energy spectrum that promotes a growth of kinetic energy able to trigger an inverse energy cascade.
