STUDY ON THE SNOW DRIFTING MODELLING CRITERIA IN BOUNDARY LAYER WIND TUNNELS

摘要: The paper presents a study on modelling the wind drifting of snow deposited flat roofs buildings in tunnel. physical model tunnel simulating urban exposure to action is not frequently reported literature, but justified by serious damages under accidental important falls combined with strong actions various buildings. A uniform layer roof was exposed order obtain drifting. parameters involved at reduced scale, particles glass beads, phenomenon transportation from were analysed, particularly roughness length and friction speed. numerical simulation ANSYS CFX program developed parallel, which more accurate visualization particularities th e flow over possible, specific areas where susceptible occur. Modified speed determined through methods used an attempt being made this work analyse factors that influence their values.