Threshold Heat-Flux Reduction by Near-Resonant Energy Transfer.
Threshold Heat-Flux Reduction by Near-Resonant Energy Transfer.
复制标题
通过近共振能量转移降低阈值热通量。
DOI：
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发表时间：
2021
影响因子：
8.6
通讯作者：
G. G. Whelan
中科院分区：
文献类型：
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作者：
P. Terry;P. Li;M. Pueschel;G. G. Whelan
向大尺度稳定模态的近共振能量转移可以减少线性临界梯度以上的输运，有助于在更高梯度处开始输运。这证明了基于地带流催化转移的离子温度梯度湍流阈值流体理论。在三重态相关时间内，热通量被共振抑制在临界梯度以上，这是由不稳定模态、纬向流和稳定模态相互作用的波数所强制的。
Near-resonant energy transfer to large-scale stable modes is shown to reduce transport above the linear critical gradient, contributing to the onset of transport at higher gradients. This is demonstrated for a threshold fluid theory of ion temperature gradient turbulence based on zonal-flow-catalyzed transfer. The heat flux is suppressed above the critical gradient by resonance in the triplet correlation time, a condition enforced by the wave numbers of the interaction of the unstable mode, zonal flow, and stable mode.