Abstract
ABSTRACT Naphthalene sublimation technique is used to investigate heat and mass transfer from the rectangular cylinders with different ratios of the width to height. Local and average mass transfer rates are obtained by using an automated depth measurement system. The experimental results are compared with the previous heat transfer data by employing the heat/mass transfer analogy. Mass transfer coefficients for the faces of the cylinder are quite different each other and changed drastically as the width to height ratio is varied. Such variation is closely connected with the complex flow phenomena around rectangular cylinder such as separation, reattachment, and vortex shedding. The comparison of mass and heat transfer data shows good agreement in average transfer rates and the trends of the data is similar in local transfer rates. Thus, naphthalene sublimation technique is proper to explore heat transfer process in the complex flow situations hardly applicable with the conventional heat transfer measurement techniques.
Published Version
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