In magnetically confined plasmas, turbulence is mainly responsible for particle and heat transport. The turbulence and thus the turbulent transport can be suppressed by shear flows. The shear flows can arise due to the equilibrium, be imposed externally, or the turbulence can generate them itself. The interaction between turbulence and shear flows is therefore an important research topic for magnetically confined plasmas.    

relevant publications

P. Manz, M. Ramisch, U. Stroth 'Physical Mechanism behind Zonal-Flow Generation in Drift-Wave Turbulence', Phys. Rev. Lett. 103, 165004 (2009)

U. Stroth, P. Manz, M. Ramisch On the interaction of turbulence and flows in toroidal plasmas' Plasma Phys. Control. Fusion 53 024006 (2011)

P. Manz, M. Ramisch, U. Stroth 'Poloidal mode structure of long-distance correlation of fluctuations under strong ExB shear in the torsatron TJ-K' Physics of Plasmas 16, 042309 (2009)

P. Manz, M. Ramisch, U. Stroth 'Long-range correlations induced by the self-regulation of zonal flows and drift-wave turbulence' Phys. Rev. E 82, 056403 (2010)

P. Manz et al. 'Spatial redistribution of turbulent and mean kinetic energy' Physics of Plasmas 19, 012309 (2012)

B. Schmid, P. Manz, M. Ramisch, U. Stroth 'Collisional Scaling of the Energy Transfer in Drift-Wave Zonal Flow Turbulence' Phys. Rev. Lett. 118, 055001 (2017)

B. Schmid, P. Manz, M. Ramisch and U Stroth 'Spatio-temporal structure of turbulent Reynolds stress zonal flow drive in 3D magnetic configuration' New J. Phys. 19 055003 (2017)

T. Ullmann et al. 'Experimental observation of resonance manifold shrinking under zonal flow shear' Phys. Rev. E 102, 063201 (2020)

T. Ullmann et al. 'Turbulent energy transfer into zonal flows from the weak to the strong flow shear regime in the stellarator TJ-K' Physics of Plasmas 28, 052502 (2021)