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ISSN Online: 2377-424X

ISBN Print: 0-85295-345-3

International Heat Transfer Conference 10
August, 14-18, 1994, Brighton, UK

NUMERICAL SOLUTION OF THE COMPLETE TWO-PHASE MODEL FOR LAMINAR FILM CONDENSATION WITH A NONCONDENSABLE GAS

Get access (open in a dialog) DOI: 10.1615/IHTC10.480
pages 287-292

Resumo

Laminar film condensation of a vapor-gas mixture on a cooled vertical plate is modeled for both quiescent and flowing conditions. The model under consideration involves the complete two-phase boundary-layer equations including inertia forces, energy convection, and interfacial shear in the liquid layer. A numerical approach for solving the model is described using a marching finite control volume method applied to a non-orthogonal grid that adapts to the increasing thickness of the liquid layer along the plate. Results are presented for steam-air mixtures and shown to be in excellent agreement with previously reported solutions, thus confirming the accuracy of the present approach. However, the range of applicability of the present model and solution technique is considerably wider than the existing models since no restrictions need to be imposed on fluid properties, mixture composition, or free stream conditions.