Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
657552 | International Journal of Heat and Mass Transfer | 2014 | 9 Pages |
Abstract
We report highly resolved measurements of the local wall heat flux in turbulent Rayleigh-Bénard convection using an infrared camera. The measurements have been undertaken in a Rayleigh-Bénard cell with rectangular base of 2.50 m Ã 0.65 m and a height of 2.5 m which is filled with air. First of all, it could be demonstrated that in a Rayleigh-Bénard cell with rectangular cross-section the time-averaged wall heat flux locally deviates by 30% from its mean. Furthermore, a strong correlation between the global flow structure inside the cell and the distribution of the local wall heat flux could be identified.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Fluid Flow and Transfer Processes
Authors
Robert Kaiser, Ronald du Puits,