Author(s)

A.P. Trunev

Abstract

The turbulent boundary layer over rough surface model is presented in the paper. The analytical expressions for random variables of hydrodynamic fields of velocity and pressure have been obtained on the basis of this model. The problem of dust diffusion from the source in a turbulent boundary layer over rough surface have been carefully examined. 1 Introduction Influence of surface roughness on turbulent flow dynamics was primarily ex- amined by Nikuradze [1]. He established, that under the condition when the heights of roughness projections of the surface exceed viscous layer thick- ness, then averaged velocity profile may be expressed as: [//%* = Hn(2//dr) + 6 (1) Here u* is the dynamical speed computed from the value of friction stress a

Keywords