Magnetic field generation by pointwise zero-helicity three-dimensional steady flow of an incompressible electrically conducting fluid.

  title={Magnetic field generation by pointwise zero-helicity three-dimensional steady flow of an incompressible electrically conducting fluid.},
  author={A. O. Rasskazov and Roman A. Chertovskih and V. Zheligovsky},
  journal={Physical review. E},
  volume={97 4-1},
We introduce six families of three-dimensional space-periodic steady solenoidal flows, whose kinetic helicity density is zero at any point. Four families are analytically defined. Flows in four families have zero helicity spectrum. Sample flows from five families are used to demonstrate numerically that neither zero kinetic helicity density nor zero helicity spectrum prohibit generation of large-scale magnetic field by the two most prominent dynamo mechanisms: the magnetic α-effect and negative… Expand
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