The correction to take account of variable property effects on turbulent forced convection to water in a pipe
The correction to take account of variable property effects on turbulent forced convection to water in a pipe
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DOI：
10.1016/s0017-9310(97)00228-7
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发表时间：
1998-02
影响因子：
5.2
通讯作者：
O. Büyükalaca;J. Jackson
中科院分区：
文献类型：
--
作者：
O. Büyükalaca;J. Jackson
本文报道了均匀加热管内流体性质变化对水湍流传热影响的实验研究。在雷诺数从2.1 × 104到5.3 × 104的范围内，获得了体壁粘度比高达1.4的数据。在建立了传热系数的定物性值后，确定了变物性的影响。这用体积粘度与壁粘度之比的n次方表示。结果发现，n在所涵盖的雷诺数范围内从约0.1稳定地增加到约0.18，平均值接近广泛引用的Sieder和Tate指数0.14。
An experimental study is reported of the effects of fluid property variation on turbulent heat transfer to water in a uniformly heated pipe. Data were obtained for bulk to wall viscosity ratios of up to 1.4 over a range of Reynolds numbers from 2.1 × 104to 5.3 × 104. After establishing constant-property values of heat transfer coefficient, the effect of variable properties was determined. This was expressed in terms of bulk to wall viscosity ratio raised to a power n. It was found that n increased steadily from about 0.1 to about 0.18 over the Reynolds number range covered, the mean value being close to the widely quoted Sieder and Tate index of 0.14.