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Similitude criteria for free convective heat and mass transfer
Author(s) -
Padet J.,
de Lorenzo T.
Publication year - 2002
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.790
Subject(s) - dimensionless quantity , similitude , prandtl number , convection , mechanics , mass transfer , heat transfer , convective heat transfer , boundary layer , thermodynamics , thermal , natural convection , mathematics , physics
Similitude criteria for free convective transfers and their corresponding dimensionless parameters are established. A need for distinction between the correctly designed parameters (to assure similitude) and standard non‐dimensional ones is emphasized. An illustrative example of transient free convection points out the difficulties which may arise through the use of unsuitable dimensionless parameters; so we show that the dimensionless thermal boundary layer thickness does not vary with the Prandtl number, in the same way as the true dimensioned thickness does. Copyright © 2002 John Wiley & Sons, Ltd.