Chiral pattern in nonrotating spherical convection

  title={Chiral pattern in nonrotating spherical convection},
  author={Akira Kageyama and Nobuaki Ohno},
  journal={Physical Review Fluids},
When the Rayleigh number is low, Rayleigh-Bénard convection in a nonrotating spherical shell with central gravity has symmetric solutions in terms of three-dimensional discrete rotation. All the known patterns with the regular polyhedral symmetries accompany reflection symmetry. We found a new type of steady convection in a nonrotating spherical shell by computer simulations. The pattern has the discrete rotational symmetry of a regular tetrahedron with no reflection symmetry. The convection… 

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