Title | Threshold Heat-Flux Reduction by Near-Resonant Energy Transfer |
Publication Type | Journal Article |
Year of Publication | 2021 |
Authors | P.W. Terry, P.Y. Li, M.J. Pueschel, G.G. Whelan |
Journal | Physical Review Letters |
Volume | 126 |
Issue | 2 |
Pagination | 025004 |
Date Published | 01/2021 |
Abstract | 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. |
URL | https://pure.tue.nl/ws/portalfiles/portal/176566142/PhysRevLett.126.025004.pdf |
DOI | 10.1103/PhysRevLett.126.025004 |
Division | FP |
Department | PMT |
PID | 50191b5a7c21a3dbb114504fc1a9e744 |
Alternate Title | Phys. Rev. Lett. |
Label | OA |
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