Description
A central challenge in plasma physics is understanding turbulence, which accounts for a large fraction of plasma transport. The Hasegawa–Wakatani system provides a minimal fluid framework for studying such dynamics. In this work, we employ a flux-driven formulation of the model, implemented using a pseudo-spectral code with a penalization method. This approach enables the self-consistent evolution of the density profile, capturing the interplay between turbulence and transport. Within this framework, we investigate the system’s evolution in the presence of a radial profile of the coupling parameter. The results reveal complex interactions between turbulence-dominated regions and regions where zonal flows prevail.