Heat exchange and hydraulic resistance for laminar flow of a viscous liquid in tubes with artificial roughness

被引：0

作者：

Nazmeev, Yu.G. ^{[1
]}

Konakhin, A.M. ^{[1
]}

Kumirov, B.A. ^{[1
]}

Olimpiev, V.V. ^{[1
]}

Shinkevich, O.P. ^{[1
]}

机构：

[1] Kazanskij Filial Moskovskogo, Energeticheskogo Inst, Kazan', Russia

来源：

Teploenergetika | 1993年 / 04期

关键词：

Heat transfer - Hydraulics - Liquids - Roughness measurement - Schematic diagrams - Tubes (components) - Viscous flow;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Results of experimental investigations are presented of effects of the nurling pitch and flange height on the convective heat exchange and hydraulic resistance on the flow of transformer oil in a round tube with nurled flanges. The experimental data are generalized by empirical dependences. Analysis of obtained results shows that the thermohydrodynamic efficiency of artificial roughness depends on the nurling geometric parameters. It is noted also that the heat transfer efficiency increase exceeds the growth of hydraulic resistance 1.25-3 times in dependence on the Reynolds number.

引用

页码：66 / 69