A MODEL FOR ISOTHERMAL HOMOGENEOUS-HETEROGENEOUS REACTIONS IN BOUNDARY-LAYER FLOW

A model for homogeneous-heterogeneous reactions in boundary-layer flow is presented in which the homogeneous reaction is represented by cubi c autocatalysis and the heterogeneous reaction by a first-order proces s. The flow is of a uniform stream over a flat surface (Blasius soluti on). It is shown that the surface reaction is the dominant mechanism n ear the leading edge. Numerical solutions of the governing equations r eveal that the homogeneous reaction dominates downstream with this rea ction taking place in a narrow region located well away from the surfa ce. An asymptotic analysis for this reaction region is obtained.