Local Characteristics of Heat Transfer from a Vibrating Cylinder

Abstract

The local details of the influence of horizontal vibration on heat transfer from a horizontal cylinder have been investigated numerically. In this work, a stable and efficient numerical scheme in the frequency domain was proposed and was applied to the above-mentioned problems. As a result the following facts have been revealed: (1) The local characteristics of heat transfer from a vibrating cylinder are different between the low-frequency vibration and the high-frequency one, although the convection fields, except for the vicinity of the cylinder surface, show similar features. This is related to the thickness of the inner steady vortex system caused by a vibrating cylinder. (2) For low-frequency vibration, the local heat transfer rate depends on the inner vortex flow because of the thick vortex system. (3) For high-frequency vibration, the inner vortex system becomes thin and acts like a solid film, hence the local heat transfer rate depends on the outer vortex flow. © 1992, The Japan Society of Mechanical Engineers. All rights reserved.