Two-dimensional conjugate free convection from an inclined flat plate in a
semi-infinite porous medium under the boundary-layer approximation is inves
tigated both analytically and numerically. The problem is reduced to a pair
of coupled parabolic partial differential equations, and series and numeri
cal solutions are obtained for both positive and negative inclinations of t
he plate. For positive inclinations solutions are possible for all values o
f the dimensionless coordinate measured along the plate form the leading ed
ge, whilst for negative inclinations solutions are only really valid up to
the point where the boundary-layer separates. Comparison between the series
expansion and the finite-difference solutions are presented and the range
of applicability of the series solutions is investigated.