회전하는 원형실린더 주위 난류 물질전달 - Schmidt 수의 영향 -

초록

Characteristics of turbulent mass transfer around a rotating circular cylinder have been investigated by Direct Numerical Simulation. The concentration field was computed for three different cases of Schmidt number, Sc=1, 10 and 100 at Re*=336. Our results confirm that the thickness of the Nernst diffusion layer decreases as Sc increases. Wall-limiting behavior within the Nernst diffusion layer was examined and compared with those of channel flow. Scalar modeling closure constants were determined, and turned out to vary considerably within the diffusion layer.