G121 CO_2 海洋隔離における放出管後方超高レイノルズ数乱流の計測

Abstract

In CO_2 ocean sequestration, dilution process of injected CO_2 past a releasing pipe is of great importance to predict biological impact. Highly turbulent flow past the releasing pipe at supercritical Reynolds number plays an important roll for enhancement of CO_2 dilution. In this study, we investigated the highly turbulent flow field past a circular cylinder by using time-series particle image velocimetry (PIV). We measured two-dimensional velocity field and its turbulent properties such as mean velocity, turbulent intensity, and Reynolds shear stress at supercritical Reynolds number.