Abstract
For measurements of turbulent heat transport in Rayleigh-Bénard convection the correction for the sidewall conductance is usually neglected or based on measurements or estimates for the empty cell. It is argued that the lateral thermal coupling between the fluid and the wall can invalidate these approaches, and that corrections based on calculations of the two-dimensional temperature fields are required in some cases. These corrections can increase obtained from fits of is the Rayleigh number) to the Nusselt number by 0.02 or more, yielding values in the range 0.30 to 0.33, which are larger than most theoretical predictions.
- Received 31 July 2000
DOI:https://doi.org/10.1103/PhysRevE.63.015303
©2000 American Physical Society