Abstract
The problems of steady film condensation and boiling over a body of arbitrary shape embedded in a porous medium have been attacked by means of the similarity transformation. A new similarity variable is suggested to solve the problems once for all possible two-dimensional and axisymmetric bodies of arbitrary geometrical configuration. Upon transforming the governing equations and boundary conditions using the similarity variables, the resulting set of equations transforms into that obtained for the case of a vertical flat plate. Thus, the numerical values furnished by Parmentier and Cheng for a flat surface are readily applicable to two-phase flows over two-dimensional and axisymmetric bodies of arbitrary shape.
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