Direct numerical simulation of an air-filled Rayleigh-Bénard convection at Ra=1e8 and 1e10

Direct numerical simulation of an air-filled (Pr=0.7) Rayleigh-Bénard configuration at Ra=1e8 and 1e10. Simulation was carried out on the MareNostrum supercomputer using 784CPUs and a 607M mesh (1024×768×768) for the highest Ra. Numerically, the governing equations were discretised in space on a Cartesian staggered grid using a finite-volume fourth-order symmetry-preserving scheme. F. Dabbagh, F.X. Trias, A. Gorobets, and A. Oliva. “On the evolution of flow topology in turbulent Rayleigh-Bénard convection“, Physics of Fluids, 28:115105, 2016. , , , and . “A priori study of subgrid-scale features in turbulent Rayleigh-Bénard convection“, Physics of Fluids, 29:105103, 2017. You can find more details in: Authors: , , and