测量了水平微细圆管内蒸馏水和不同质量浓度的水基多壁碳纳米管纳米流体在低雷诺数下的强制对流换热特性。实验结果表明,与蒸馏水相比,纳米流体的对流换热系数显著提高,且随质量浓度和管内雷诺数的增大而增大;并且研究了流体管内流动阻力特性,得到的泊肃叶数f·Re值随着雷诺数的变化不明显,但纳米流体的f·Re值要明显小于纯水。
Measurements of forced convective heat transfer characteristics for distilled water and aqueous suspensions of multi-walled carbon nanotubes（CNT nanofluids）with different mass concentration are performed in a horizontal stainless circular tube.The experimental results show that the convective heat transfer coefficient of CNT nanofluids is significantly enhanced compared with distilled water,and increases with increasing mass concentration and Reynolds number;the flow resistance characteristics are also investigated,and the obtained Poiseuille number f？Re changes slightly with Re,meanwhile,f·Re of nanofluids is significantly smaller than that predicted by Hagen-Poiseuille Law.
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