ISSN Online: 2377-424X
ISBN Print: 0-89116-909-1
International Heat Transfer Conference 9
AN ASYMPTOTIC ANALYSIS OF LAMINAR FILM CONDENSATION ON A VERTICAL FLAT PLATE INCLUDING VARIABLE PROPERTY EFFECTS
Sinopsis
Natural convection laminar film condensation on a vertical flat plate under the thermal boundary condition Tw* = const, is studied to demonstrate the advantages of an asymptotic approach to rather complex two−phase flow and heat transfer problems. After introducing two perturbation parameters, one for subcooling the liquid (∈) and another one for superheating the vapour (∈^), a regular perturbation solution with only one solution parameter is obtained. The effects of variable properties are included asymptotically. Non−asymptotic solutions are far less general than asymptotic ones since they depend on a large number of solution parameters.