• Published: January 01, 2017 Received: - Released on J-STAGE: January 27, 2017 Accepted: November 21, 2016 Advance online publication: - Revised: -

(compatible with EndNote, Reference Manager, ProCite, RefWorks)

(compatible with BibDesk, LaTeX)

Inhomogeneous helicity enters expression for the Reynolds stress as the coupling coefficient of absolute vorticity. In contrast to the eddy viscosity, this helicity effect may play for the transport suppression and structure generation in turbulence. Large-scale flow generation due to inhomogeneous helicity is confirmed by direct numerical simulations '(DNSs) of rotating turbulence. As interesting applications of this effect, the roles of helicity in the generation and sustainment of cyclone and angular-momentum transport in the solar convection zone are suggested.

• X