MASS TRANSFER FROM A CIRCULAR CYLINDER IN AN APPROACHING UNIFORM SHEAR FLOWHyung Jin Sung DOI: 10.1615/IHTC9.2220 摘要A naphthalene sublimation technique is used to investigate mass transfer from a circular cylinder in a turbulent uniform shear flow. Experiments are performed in a wind tunnel with a shear flow generator. The rate of shear and the mean flow Reynolds number are varied to study their effects on the mass transfer. It is found that the distribution of the local mass transfer rate on a circular cylinder is characterized with a shear parameter K_{d} (S·d/U_{c}), where S is the shear rate, d is the diameter of circular cylinder and U_{c} is the centerline mean velocity. The angular position at which the Sherwood number is minimum approximately proportional to the shear parameter on both the upper and the lower surfaces of the cylinder. The overall mass transfer rate is not significantly dependent on K_{d} in the range of the present mearsurements 0<K_{d}≤0.132 , but strongly dependent on the centerline mean Reynolds number. 

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