4 papers
On the shear-current effect: toward understanding why theories and simulations have mutually and separately conflicted
Hongzhe Zhou, Eric G. Blackman
The shear-current effect (SCE) of mean-field dynamo theory refers to the combination of a shear flow and a turbulent coefficient with a favorable negative sign for exponen…
Influence of inhomogeneous stochasticity on the falsifiability of mean-field theories and examples from accretion disc modeling
Hongzhe Zhou, Eric G. Blackman
Despite spatial and temporal fluctuations in turbulent astrophysical systems, mean-field theories can be used to describe their secular evolution. However, observations taken over…
Generalized quenching of large-scale magnetic dynamos in anisotropic flows
Hongzhe Zhou, Eric G. Blackman
The buildup of small-scale magnetic helicity which accompanies the oppositely signed growth on large scales is central to conventional dynamical quenching theories of mean-field dy…
Calculating turbulent transport tensors by averaging single plume dynamics and application to dynamos
Hongzhe Zhou, Eric G. Blackman
Transport coefficients in turbulence are comprised of correlation functions between turbulent fluctuations and efficient methods to calculate them are desirable. For example, in me…