Unsteady-State Laminar Heat Transfer in a Rotating Disk: Self- Similar Solution

被引：0

作者：

I. V. Shevchuk

机构：

[1] National Academy of Sciences of Ukraine,Institute of Engineering Thermophysics

来源：

High Temperature | 2004年 / 42卷

关键词：

Navier-Stokes and energy equations; Nusselt number; stages of cooling;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Unsteady-state laminar convective heat transfer is investigated under conditions of air cooling of a rotating isothermal disk. Group analysis is used to reduce the Navier-Stokes and energy equations to a self-similar form which makes possible their exact solution. Calculations reveal that the Nusselt number in the initial stage of cooling significantly decreases in time; in the second stage of cooling, this number has the same value as that for steady-state conditions. The results of this study may be used to optimize the unsteady-state procedures of experimental determination of the heat-transfer coefficient.

引用

页码：592 / 595

页数：3

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