Convective mass transfer from a horizontal rotating large-diameter cylinder

Abstract

The local and average convective mass transfer coefficients from the porous medium surface of a horizontal rotating large-diameter cylinder were measured at a constant mass transfer state. Characteristics of local and average Sherwood numbers varying with rotational Reynolds numbers were investigated. Further, the critical Reynolds number ( Re r,cri ) was determined and analyzed. Based on the experimental results, equations correlating the average Sherwood number ( Sh) and critical Reynolds number ( Re r,cri ) with the rotational Reynolds number ( Re r ), Schmidt number ( Sc) and Grashof number ( Gr) have been obtained, respectively.