Outputs (2)

The nature of mean-field generation in three classes of optimal dynamos (2020)
Journal Article
Brandenburg, A., & Chen, L. (2020). The nature of mean-field generation in three classes of optimal dynamos. Journal of Plasma Physics, 86(1), Article 1905860110. https://doi.org/10.1017/s0022377820000082

In recent years, several optimal dynamos have been discovered. They minimize the magnetic energy dissipation or, equivalently, maximize the growth rate at a fixed magnetic Reynolds number. In the optimal dynamo of Willis (Phys. Rev. Lett., vol. 109,... Read More about The nature of mean-field generation in three classes of optimal dynamos.

Optimal kinematic dynamos in a sphere (2020)
Journal Article
Luo, J., Chen, L., Li, K., & Jackson, A. (2020). Optimal kinematic dynamos in a sphere. Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 476(2233), Article 20190675. https://doi.org/10.1098/rspa.2019.0675

A variational optimization approach is used to optimize kinematic dynamos in a unit sphere and locate the enstrophy-based critical magnetic Reynolds number for dynamo action. The magnetic boundary condition is chosen to be either pseudo-vacuum or per... Read More about Optimal kinematic dynamos in a sphere.