Abstract
The purpose of this study is to investigate the wake structure and drag characteristics of a living tree as fundamental researches of windbreak forests and roadside trees. We used a conifer and a broadleaf tree as test pieces in the wind tunnel experiment. The wake profiles behind the conifer and broadleaf tree were almost same as that of a permeable cylinder which has flow permeability. It found that a wake profile of a living tree is influenced by density of a leaf and shape of a tree canopy.
