The characterization of the interaction between two convection rolls from two cubic containers

We present characterization of the large-scale circulations (LSCs) of turbulent Rayleigh- Bénard convection in two cubic cells. The two cells are connected through a half-open shared wall. We found two states when changing the tilting angle: counter rotating when the tilting angle is small, co-rotating when the tilting angle is big. We also looked at the strength of LSCs at different states, and we found the discontinuity in the strength VS tilting angle measurement for the LSC that switched the orientation. We are testing whether an extended stochastic model based on Brown and Ahlers (Phys. Fluids, 2008) can describe the observed behaviors.