TURBULENT STRUCTURE OF CORNER REGION AFFECTED BY CHANNEL MEANDERING

Abstract

Characteristics of turbulent structure of corner region affected by channel meandering are investigated using LDV measurements and DPTV (Dye streak pattern Particle Tracking Velocimetry) which visualize dye streak pattern and particle path line simultaneously. First kind of secondary flow develope opposing to second kind of secondary flow of corner region in straight open channel flow. The developement of secondary flow results in arrising of large-scale coherent structure which contribute to generate large-scale shear structure with different characteristic for the left and right side wall region.