Accession Number : AD0488522

Title :   INTERACTION OF SURFACE CHEMISTRY AND MASS TRANSFER IN NONSIMILAR BOUNDARY-LAYER FLOWS.

Descriptive Note : Rept. for 1 Jan 65-30 Mar 66,

Corporate Author : AEROSPACE CORP EL SEGUNDO CA

Personal Author(s) : Liu, Shaowen W. ; Kuby, George H.

Report Date : JUN 1966

Pagination or Media Count : 50

Abstract : An integral method is developed for compressible boundary layers with surface reactions. Each individual conservation equation is allowed to admit arbitrary distribution of surface activities subjected to the constraints imposed by the surface interaction mechanisms that, in general, involved couplings between the boundary conditions of the various conservation equations. As an example, the interaction of surface chemistry due to combustion and its attendant mass transfer on an isothermal graphite cone is studied, and its effects on velocity field and surface heat transfer are examined. Solutions are obtained by a numerical method. The result shows that the surface combustion is rate-limited near the origin and diffusion-limited sufficiently far downstream. The transition length between the two limiting regimes depends drastically on an interaction parameter. The maximum effects on surface shear and surface heat transfer occur at the diffusion-limited regimes, and the rsults are in good agreement with stagnation point calculations based on diffusion-limited combustion reported by Scala. The extensions to other modes of surface interaction as well as to arbitrary bodies are discussed. (Author)

Descriptors :   *SURFACE PROPERTIES), (*BOUNDARY LAYER, THERMOCHEMISTRY, COMBUSTION, GRAPHITE, HEAT TRANSFER, NUMERICAL ANALYSIS, SHEAR STRESSES, DIFFUSION, STAGNATION POINT, MASS TRANSFER, TRANSFORMATIONS(MATHEMATICS), MATHEMATICAL ANALYSIS, REYNOLDS NUMBER.

Subject Categories : Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE