The forced convective heat transfer from multiple isothermal cylinders in tandem and staggered arrangements to the surrounding non-Newtonian Carreau fluid was studied. The study has been motivated by this fact that the Carreau viscosity function is one of the most accurate rheological models for the prediction of non-Newtonian inelastic behavior. A pressure correction flow solver was used, and it was validated against previous numerical and experimental data. It was shown the pertinent nondimensional numbers for the problem were the Reynolds number Re, the Carreau number Cu, and the power-law exponent n. The flow and temperature fields were obtained for Re<100, 1 ≤ Cu ≤ 20, and 0.4 ≤ n ≤ 1.4, and the effect of these nondimensional numbers was fully investigated on the local and average Nusselt numbers for various separation distances between cylinders. It was shown that the non-Newtonian rheological behavior notably affected the heat transfer rate from hot isothermal cylinders in crossflows. Moreover, the interaction between upstream and downstream cylinders depended on the various features of the non-Newtonian viscosity function. The heat transfer rate increased as Cu number increased, and it decreased as the power-law index increased.

研究了从多个等温圆柱体串联和交错布置到周围非牛顿卡洛流体的强迫对流传热。这项研究的动机是这一事实，即Carreau粘度函数是预测非牛顿非弹性行为的最准确的流变模型之一。使用了压力校正流量求解器，并已根据先前的数值和实验数据进行了验证。结果表明，该问题的相关无量纲数是雷诺数Re，卡洛数Cu和幂律指数n。对于重新<100，1≤铜≤20得到的流量和温度场，和0.4≤  Ñ ≤1.4，并充分研究了这些无量纲数对气缸之间各种分隔距离的局部和平均Nusselt数的影响。结果表明，非牛顿流变行为显着影响了横流热等温圆柱体的传热速率。此外，上游和下游圆柱体之间的相互作用取决于非牛顿粘度函数的各种特征。传热速率随Cu数量的增加而增加，而随幂律指数的增加而减小。