Transition from natural to mixed convection for steam–gas flow condensing along a vertical plate Academic Article uri icon

abstract

  • An analysis method based on two-phase boundary layer analysis has been developed to study the effects of superimposed forced convection on natural convection steam-gas flow condensing along a vertical plate. The mechanism by which superimposed forced convection enhances heat transfer is evaluated: the bulk flow blows away non-condensable gases accumulating near the interface, resulting in an elevated condensation driving force. Further, this bulk flow blowing capability may be characterized by a conventional mass transfer driving potential. Results of the new model are shown to be consistent with experimental data. Finally, a simple criterion was developed to identify transition to mixed convection from natural convection steam-gas flow. © 2008 Elsevier Ltd. All rights reserved.

author list (cited authors)

  • Liao, Y., Vierow, K., Dehbi, A., & Guentay, S.

citation count

  • 10

publication date

  • January 2009