Recent experiments have noted the coexistence of multiple shearing fields in edge turbulence, and have observed that the shearing population ratios evolve as the L-H transition is approached. A novel model including zonal flows (ZFs), geodesic acoustic modes (GAMs) and turbulence as a zero-dimensional self-consistent two predator-one prey system with multiple frequency shearings is proposed. ZF with finite frequency (i.e. GAM) can have different shearing dynamics from that with zero frequency, because of the finite shearing field autocorrelation times. Decomposing the broadband ZF spectrum into the two populations enables us to assign different shearing weights to the components of the shearing field. We define states with no ZF and GAM as ...
In magnetically confined plasmas, drift wave turbulence is believed to be responsible for theanomalo...
The roles of wave phase structure and evolution in zonal flow dynamics are investigated. Previous wo...
A simple one-field L-H transition model is studied in detail, analytically and numerically. The dyna...
Recent experiments have noted the coexistence of multiple shearing fields in edge turbulence, and ha...
A theory of the effect of the geodesic acoustic mode (GAM) on turbulence is presented. Two synergist...
We show that shear is not the exclusive parameter that represents all aspects of flow structure effe...
International audienceWe present a theory of turbulence elasticity, which follows from delayed respo...
We present direct evidence of low frequency, radially sheared, turbulence-driven flows (zonal flows ...
International audienceWe investigate the dynamics of the low(L) → high(H) transiti...
We investigate the dynamics of the low(L) → high(H) transition using a time-dependent, one dimension...
The predictions of the extended predator-prey model of the coupled spectral dynamics of drift wave-z...
Zonal flows, thought crucial to the saturation and self-regulation of turbulence and turbulent trans...
We present a new, unified model of transport barrier formation in " elastic" drift wave-zonal flow (...
In geophysical and plasma contexts, zonal flows are well known to arise out of turbulence. We elucid...
The radial structures of multiple sheared flow populations and fluctuations are simultaneously measu...
In magnetically confined plasmas, drift wave turbulence is believed to be responsible for theanomalo...
The roles of wave phase structure and evolution in zonal flow dynamics are investigated. Previous wo...
A simple one-field L-H transition model is studied in detail, analytically and numerically. The dyna...
Recent experiments have noted the coexistence of multiple shearing fields in edge turbulence, and ha...
A theory of the effect of the geodesic acoustic mode (GAM) on turbulence is presented. Two synergist...
We show that shear is not the exclusive parameter that represents all aspects of flow structure effe...
International audienceWe present a theory of turbulence elasticity, which follows from delayed respo...
We present direct evidence of low frequency, radially sheared, turbulence-driven flows (zonal flows ...
International audienceWe investigate the dynamics of the low(L) → high(H) transiti...
We investigate the dynamics of the low(L) → high(H) transition using a time-dependent, one dimension...
The predictions of the extended predator-prey model of the coupled spectral dynamics of drift wave-z...
Zonal flows, thought crucial to the saturation and self-regulation of turbulence and turbulent trans...
We present a new, unified model of transport barrier formation in " elastic" drift wave-zonal flow (...
In geophysical and plasma contexts, zonal flows are well known to arise out of turbulence. We elucid...
The radial structures of multiple sheared flow populations and fluctuations are simultaneously measu...
In magnetically confined plasmas, drift wave turbulence is believed to be responsible for theanomalo...
The roles of wave phase structure and evolution in zonal flow dynamics are investigated. Previous wo...
A simple one-field L-H transition model is studied in detail, analytically and numerically. The dyna...