Accession Number : AD0716035

Title :   Calculation of Laminar Skin Friction on a Porous Plate by a Refined Integral Method,

Corporate Author : NAVAL ORDNANCE LAB WHITE OAK MD

Personal Author(s) : Zien,Tse-Fou

Report Date : 10 AUG 1970

Pagination or Media Count : 31

Abstract : The skin friction on a porous flat plate in the presence of an incompressible laminar boundary layer is calculated by a generalization of a refined integral technique. This method is based on a double integration of the momentum equation, replacing the skin-friction term by an integral representation involving the assumed velocity profile. Both a case of similarity blowing of suction and a case of uniform blowing or suction were studied. Using two simple and crude velocity profiles of polynominal form with constant coefficients, closed-form solutions are obtained through simple procedures and compared with the available exact solutions. The same profiles are then employed in the usual integral method to calculate the corresponding skin friction. (Author)

Descriptors :   (*SKIN FRICTION, MATHEMATICAL ANALYSIS), (*LAMINAR BOUNDARY LAYER, POROUS MATERIALS), FLAT PLATE MODELS, INTEGRAL EQUATIONS, MASS TRANSFER, INCOMPRESSIBLE FLOW, MOMENTUM, VELOCITY, STATISTICAL DISTRIBUTIONS, THEORY

Subject Categories : Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE