ISSN Online: 2377-424X
ISBN Print: 0-85295-345-3
International Heat Transfer Conference 10
EXPERIMENTAL STUDY OF THE EFFECT OF FLAT-PLATE WAKE ON MASS TRANSFER ABOUT A CYLINDER IN CROSSFLOW
Abstract
This study presents an experimental investigation of the
effect of the wake on mass transfer about a circular cylinder in a crossflow. The flat-plate wake was generated by merging two mirror images of turbulent boundary layers that were well developed along the both sides of flat plate with a sharp trailing edge. The velocity field was measured by a hot-wire system and the mass transfer rate by a naphthalene sublimation technique. The mixing and developing stages of the wake were addressed to identify flow conditions. The mass transfer effects of different
developing stages of the wake was discussed in detail. It noted that a local maximum appears not at the stagnation point but at a point a little downstream when the cylinder is located in the near-wake region and much more elevated mass transfer rate is obtained compared to the effect of free-stream turbulence.