DOI: 10.1615/ICHMT.2014.IntSympConvHeatMassTransf
ISBN Print: 978-1-56700-356-7
ISSN Online: 2642-3499
ISSN Flash Drive: 2642-3502
REGARDS ON MIXED CONVECTION
要約
This lecture aims to place again the mixed thermal convection in the center of the convection heat transfer and to emphasize three issues that arise by this approach: (i) a clear definition of the reference temperature in the Boussinesq approximation; (ii) a practical delimitation of the three convective modes, which are the forced convection (FC), mixed convection (MC) and natural (free) convection (NC); (iii) and, finally, a uniform description of the assembly FC/MC/NC in the similarity framework. Two examples are analyzed : plane and annular channels, for which analytical solutions are available. They allow a detailed illustration of the proposed answers to the above issues, and permit to define characteristic scales in mixed convection. The case of mixed convection in nanochannels is also examined.