Abstract
Abstract
Highlights
Large scale so-called zonal flows, which display strong horizontal winds, can be observed in many buoyancy-driven flows
The 3-D RB convection with increasing rotation strength about an axis parallel to the plate is discussed in § 4, where we show the transition from zonal flow to convection roll states with increasing Γ
After we have shown the increasing two-dimensionalization of the flow with increasing rotation rate for spanwise rotating RB convection, we will study the transition from zonal flow to the convection roll states with increasing aspect ratio Γ, as we have already done for the 2-D case. von Hardenberg et al (2015) studied spanwise rotating RB convection for Ra = 107, Pr = 0.71 with fixed Γ = 2π
Summary
Large scale so-called zonal flows, which display strong horizontal winds, can be observed in many buoyancy-driven flows. Recent studies on large-aspect ratio 3-D RB convection with no-slip plates revealed the existence of superstructures with horizontal extent of six to seven times the height of the domain (Hartlep, Tilgner & Busse 2003; Parodi et al 2004; Pandey, Scheel & Schumacher 2018; Stevens et al 2018; Green et al 2020; Krug, Lohse & Stevens 2020). These findings motivated us to study zonal flow at.
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