14 citations · 23 across the 4 of their papers we have counts for
4 papers
The problem of small and large scale fields in the solar dynamo
A. Brandenburg, N. E. L. Haugen, P. J. Käpylä +1
Three closely related stumbling blocks of solar mean field dynamo theory are discussed: how dominant are the small scale fields, how is the alpha effect quenched, and whether magne…
Local models of stellar convection III: The Strouhal number
P. J. Käpylä, M. J. Korpi, M. Ossendrijver +1
Aims: The Strouhal number (St), which is a nondimensional measure of the correlation time, is determined from numerical models of convection. The Strouhal number arises in the mean…
Local models of stellar convection II: Rotation dependence of the mixing length relations
P. J. Käpylä, M. J. Korpi, M. Stix +1
We study the mixing length concept in comparison to three-dimensional numerical calculations of convection with rotation. In a limited range, the velocity and temperature fluctuati…
Passive scalar diffusion as a damped wave
Axel Brandenburg, Petri Käpylä, Amjed Mohammed
Three-dimensional turbulence simulations are used to show that the turbulent root mean square velocity is an upper bound of the speed of turbulent diffusion. There is a close analo…