Nonlinear spectral back-transfer from zonal modes to turbulence limits shearing field coherence time, with suppression in negative triangularity plasmas increasing auto-coherence and Kubo number.
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Turbulence spreading transports zonal flows into stable regions in gyrokinetic simulations, directly related to enstrophy transport via a momentum theorem extending the Charney-Drazin result.
A new JAX-based gyrokinetic code achieves statistical parity with the legacy GKW solver, delivers substantial speedup on GPUs, and enables ML workflows via automatic differentiation.
citing papers explorer
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How nonlinear spectral back transfer limits the temporal coherency of zonal modes?
Nonlinear spectral back-transfer from zonal modes to turbulence limits shearing field coherence time, with suppression in negative triangularity plasmas increasing auto-coherence and Kubo number.
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Gyrokinetic simulations on zonal flow-turbulence spreading coupling
Turbulence spreading transports zonal flows into stable regions in gyrokinetic simulations, directly related to enstrophy transport via a momentum theorem extending the Charney-Drazin result.
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gyaradax: Local Gyrokinetics JAX Code
A new JAX-based gyrokinetic code achieves statistical parity with the legacy GKW solver, delivers substantial speedup on GPUs, and enables ML workflows via automatic differentiation.