Local wall heat flux in confined thermal convection
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 2.50m×0.65m and a height of 2.5m which is filled with air. First of all, it co...
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| Veröffentlicht in: | International journal of heat and mass transfer 2014-06, Vol.73, p.752-760 |
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| container_title | International journal of heat and mass transfer |
| container_volume | 73 |
| creator | Kaiser, Robert du Puits, Ronald |
| description | 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 2.50m×0.65m and a height of 2.5m 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. |
| doi_str_mv | 10.1016/j.ijheatmasstransfer.2014.02.033 |
| format | Article |
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| fulltext | fulltext |
| identifier | ISSN: 0017-9310 |
| ispartof | International journal of heat and mass transfer, 2014-06, Vol.73, p.752-760 |
| issn | 0017-9310 1879-2189 |
| language | eng |
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| source | Elsevier ScienceDirect Journals |
| subjects | Convection Cross sections Fluid dynamics Heat flux Heat transfer Infrared thermography Mass transfer Rayleigh–Bénard convection Turbulence Two-dimensional heat flux Walls |
| title | Local wall heat flux in confined thermal convection |
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