首页> 外文期刊>International Journal of Heat and Mass Transfer >EFFECT OF CROSS-SECTIONAL ASPECT RATIO ON TURBULENT HEAT TRANSFER IN AN ORTHOGONALLY ROTATING RECTANGULAR SMOOTH DUCT
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EFFECT OF CROSS-SECTIONAL ASPECT RATIO ON TURBULENT HEAT TRANSFER IN AN ORTHOGONALLY ROTATING RECTANGULAR SMOOTH DUCT

机译:截面纵横比对正交旋转矩形光滑管道中湍流传热的影响

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摘要

In order to investigate the effects of the Coriolis force and the duct cross-sectional aspect ratio on turbulent heat transfer, the large eddy simulation was performed changing the aspect ratio and the rotation number in the range, 0.25-4.0 and 0-5.0, respectively, while the turbulent Reynolds number was 350. In the results, both direct and indirect influences of the Coriolis force on the turbulence were seen. The relative intensity of these influences depended on the aspect ratio. The Colburn's j factor showed a higher value for a larger aspect ratio because of larger heat transfer enhancement on the pressure and side surfaces.
机译:为了研究科里奥利力和导管横截面纵横比对湍流传热的影响,进行了大涡模拟,将纵横比和转数分别更改为0.25-4.0和0-5.0。 ,而雷诺数为350。在结果中,可以看到科里奥利力对湍流的直接和间接影响。这些影响的相对强度取决于长宽比。对于较大的纵横比,Colburn的j因子显示出较高的值,这是因为在压力和侧面上的传热增强。

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