Accession Number : AD0645531

Title :   INVESTIGATIONS OF THE THERMALLY STRATIFIED BOUNDARY LAYER,

Corporate Author : COLORADO STATE UNIV FORT COLLINS FLUID MECHANICS PROGRAM

Personal Author(s) : Plate,E. J. ; Lin,C. W.

Report Date : FEB 1966

Pagination or Media Count : 55

Abstract : The problem of modeling a thermally stratified boundary layer of the atmosphere in a wind tunnel is investigated. The modeling of the mean-velocity distribution is based on the validity of the semi-empirical, logarithmic-linear formula proposed by Monin and Obukhov; this equation is shown to be in good agreement with the experimental data of this study. In addition, a method is given to permit the determination of the scaling length parameter L for the logarithmic-linear distribution from a knowledge of the gross parameters of the mean flow. This method is based on results which were obtained in previous investigations of the heat transfer from smooth, flat plates. The parameter L, which is defined by this method, yields the best fit between wind tunnel data and logarithmic-linear distribution with the same numerical coefficients as those determined by others for the atmospheric surface layer. (Author)

Descriptors :   (*BOUNDARY LAYER, ATMOSPHERES), (*ATMOSPHERE MODELS, BOUNDARY LAYER), THERMAL DIFFUSION, WIND TUNNEL MODELS, VELOCITY, GAS FLOW, TURBULENCE

Subject Categories : Atmospheric Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE