Unsteady heat transfer combined with thermal radiation along with consideration of temperature-dependent properties and turbulent flow through a thermal entrance region of a concentric annulus and a circular tube

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概要

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• The turbulent flow of steam moving through the thermal entrance region of a concentric annulus and a circular tube, is heated by an inner pipe wall of the annulus and the circular tube wall, respectively. An analysis of this was made so as to study unsteady heat transfer combined with thermal radiation and turbulent flow. At the time this study was carried out, we took into consideration the influence of temperature-dependent thermophysical properties, and restricted ourselves to the optically thin limit, using the Planck mean coefficient, K_p(T). The influence from the radius ratio of the annulus and the temperature ratio were examined through numerical calculations of the finite difference methods. In particular, the unsteady states with consideration directed to the temperature-dependent properties of steam are emphasized in this paper.

• 山口大学の論文
• 1980-12-00

著者

• KURIMA Junji

  Department of Mechanical Engineering

• Kawachi Shigehiro

  Riko Co.

• Koshin Haruo

  Hitachi-Kinzoku Co.

関連論文

• Free convection heat transfer from a short vertical plate
• Unsteady heat transfer combined with thermal radiation along with consideration of temperature-dependent properties and turbulent flow through a thermal entrance region of a concentric annulus and a circular tube

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