Abstract
High-pressure gases are used to study high-Rayleigh-number Rayleigh-Bénard convection in cylindrical horizontal enclosures. The Nusselt-Rayleigh heat transfer relationship is investigated for 1 × 109 < Ra < 1.7 × 1012. Schlieren video images of the flow field are recorded through optical viewports in the pressure vessel. The data set is well correlated by Nu = 0.071Ra0.328. The schlieren results confirm the existence of a large-scale flow that periodically interrupts the ascending and descending plumes. The intensity of both the plumes and the large-scale flow increases with Rayleigh number.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1-12 |
| Number of pages | 12 |
| Journal | Journal of Fluid Mechanics |
| Volume | 469 |
| DOIs | |
| State | Published - Oct 25 2002 |
Bibliographical note
Funding Information:We are grateful to Y.-A. Barde for the gift of human NT-4/5 and for his suggestion to use it as a NGF antagonist, to G. Dechant for the gift of the p75NTR receptor body, and to A. McMahon for the gift of Shh. We thank E. Martíand F. Trousse for technical advice and D. Edgar, M. Sefton, and J. C. López for critically reading the manuscript and for grammatical corrections of the language. This study was financed by EU Grant PL-960024.