Print Email Facebook Twitter Identification of the wind in Rayleigh–Bénard convection Title Identification of the wind in Rayleigh–Bénard convection Author Van Reeuwijk, M. Jonker, H.J.J. Hanjali?, K. Faculty Applied Sciences Department Multi-Scale Physics Date 2005-05-09 Abstract Using a symmetry-accounting ensemble-averaging method, we have identified the wind in unbounded Rayleigh–Bénard convection. This makes it possible to distinguish the wind from fluctuations and to identify dynamic features of each. We present some results from processing five independent three-dimensional direct numerical simulations of a ? = 4 aspect-ratio domain with periodic side boundaries at Ra = 107 and Pr = 1. It is found that the wind boundary layer scales linearly very close to the wall and has a logarithmic region further away. Despite the still noticeable molecular effects, the identification of log scaling and significant velocity and temperature fluctuations well within the thermal boundary layer clearly indicate that the boundary layer cannot be classified as laminar. Subject Benard convectionboundary layer turbulencefluctuationsflow simulation To reference this document use: http://resolver.tudelft.nl/uuid:54466749-dbb3-4616-99e1-cb053e57d84d DOI https://doi.org/10.1063/1.1920350 Publisher American Institute of Physics ISSN 1070-6631 Source http://link.aip.org/link/PHFLE6/v17/i5/p051704/s1 Source Physics of Fluids, 17 (5), 2005 Part of collection Institutional Repository Document type journal article Rights (c) 2005 The Author(s); American Institute of Physics Files PDF vanReeuwijk_2005.pdf 344.22 KB Close viewer /islandora/object/uuid:54466749-dbb3-4616-99e1-cb053e57d84d/datastream/OBJ/view