Abstract
In the present study, I photographed two-phase flow containing scattering particle in boundary layer turbulence by a horizontal model wind tunnel. And I divided into a particle aspect and a gas phase by image processing and established the speed of both aspects using the particle imaging velocimetry (PIV) method. Based on the result, I evaluated the main clause of the turbulent stress income and expenditure including the scattering particle. Therefore, I made clear that there are contradicting two effect of scattering particle. In short, existence of scattering particle increases and decreases Reynolds stress of gas phase.
