Dependence of boundary layer thickness on layer height for extended localised heaters

Sukhanovskii A.; Evgrafova A.

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Dependence of boundary layer thickness on layer height for extended localised heaters

机译：边界层厚度对扩展局部加热器层高度的依赖性

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摘要

Dependence of boundary layer thickness on layer height in laminar and transient regimes is studied for convection from localised heat source with an open surface. The measurements of Nusselt number and characteristic frequency of thermal plume formation are done for a wide range of Rayleigh number, different Prandtl numbers and different aspect ratios. The obtained results prove that for the developed (but not turbulent) convective flow the boundary layer thickness is almost independent of the layer height and it is mainly defined by applied temperature difference and physical properties of the fluid.

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来源
《Experimental Thermal and Fluid Science: International Journal of Experimental Heat Transfer, Thermodynamics, and Fluid Mechanics》 |2021年第1期|共4页
作者
Sukhanovskii A.; Evgrafova A.;
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作者单位

Inst Continuous Media Mech Korolyov 1 Perm 614013 Russia;

Inst Continuous Media Mech Korolyov 1 Perm 614013 Russia;

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原文格式 PDF
正文语种 eng
中图分类流体力学;
关键词
Thermal convection; boundary layer; Heat transfer; Nusselt number;

机译：热对流;边界层;传热;露面数;

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Dependence of boundary layer thickness on layer height for extended localised heaters

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