The application of large-scale numerical simulations of Rayleigh-Bénard convection in large-aspect-ratio cylindrical domain with realistic boundary conditions to analyze the domain coarsening and wave number selection, was investigated. It was found that the various measures of the coarsening dynamic scales in time with power-law exponents, indicating that multiple length scales were required in describing the time dependent pattern evolution. The results obtained indicated the translational correlation length scales with time as t0.12. A possible wave number selection mechanism was presented from the final pattern which evolve toward the wave number where isolated dislocations become motionless.
ASJC Scopus subject areas
- Physics and Astronomy(all)