Analytical Solution of the Thermal Entrance Heat Transfer Problem for Viscous Flow in Annulus

被引:2
|
作者
Vachagina, E. K. [1 ]
Kadyirov, A. I. [1 ]
机构
[1] Russian Acad Sci, Kazan Sci Ctr, Lobachevsky St 2-31,POB 190, Kazan 420111, Russia
来源
关键词
heat transfer; thermal entrance region; annuli; viscous dissipation; analytical solution; separation of variables method; FLUID;
D O I
10.1115/1.4033093
中图分类号
O414.1 [热力学];
学科分类号
摘要
The Graetz-Nusselt problem with Brinkman extension is considered for steady-state laminar Newtonian flow in annuli. To solve the problem, a separation of variables method is used. In the limiting cases, the eigenvalues are in full agreement with the eigenvalues corresponding to flat channel and circular pipe. Useful formulas are represented to calculate the length of the thermal entrance region and Nusselt numbers in annuli.
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页数:4
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