کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
653220 | 1457495 | 2014 | 10 صفحه PDF | دانلود رایگان |
This paper presents the effect of the spacing between the magnetic obstacles on the overall transport processes at interaction parameter N = 11 and Reynolds number Re = 600. The numerical simulations are performed for separation ratio (spacing to magnet width ratio), g⁎, of 1.0, 1.25, 1.5 1.75, 2.0, 2.25, 2.5 and 3.0 in a staggered grid system. No significant interaction between the wakes is observed for g⁎ ≥ 2.25. However, at smaller separation ratio (such as, g⁎ = 1.0), the wakes interact in a complicated manner resulting in different thermo-hydrodynamic regimes. Moreover, the convection effect is much stronger than absent magnetic obstacles situation for all separation ratios, and the maximum value of overall heat transfer increment is about 52.3% at g⁎ = 1.0. The optimum separation ratio for heat transfer enhancement is g⁎ = 2.0 with only a modest increase in friction loss.
Journal: International Communications in Heat and Mass Transfer - Volume 59, December 2014, Pages 178–187