The study investigates nonlinear interactions in density stratified Taylor-Couette (TC) flows, specifically focusing on strato-rotational instability (SRI) modes and their impact on spiral patterns and velocity changes.
These interactions lead to interesting dynamics involving competing spiral wave modes that travel in opposite directions, resulting in low-frequency modulations in the flow.
The research also explores how factors like Reynolds numbers, stratification, and container geometry influence these modulations, suggesting that they may act as a secondary instability not seen in all SRI unstable regimes, with implications for understanding star formation in accretion discs.