Nonlinear instability mechanism in 3D collisional drift-wave turbulenceFunded under: EAEC-FUSION 12C
Numerical simulation of 3D collisional drift-wave turbulence reveal behaviour basically different from that found in previous 2D studies. The linear instability saturates due to energy transfer to small k(z) leading to the formation of convective cells. The turbulence is sustained by non-linear transfer processes between k(z) zero and non-zero modes, the latter acting as a catalyst. The system tends to relax to a non-turbulent poloidal shear flow.
Bibliographic Reference: Article: Physical Review Letters, Vol. 74 (1995) No. 5, pp. 706-709
Record Number: 199510792 / Last updated on: 1995-07-17
Original language: en
Available languages: en