This paper reports fluid flow and heat transfer in an axially rotating pipe equipped with Kenics mixer under constant wall heat flux condition. Numerical simulations were processed with the commercial finite volume CFD code, ANSYS Fluent 19.2. The realizable k-ε turbulent model was used to close the Reynolds Average Navier-Stokes (RANS) equations. Buoyancy effects (βΔT) and gravity (g = 9.81 m/s²) were considered in the simulations. In the range of axial Reynolds numbers between 10,000 and 30,000 (10,000 ≤ Re_a ≤ 30,000), the Kenics mixer enhanced the Nusselt number of the rotating pipe by 41–50%, 38–47% and 33–42% at rotation rates of 1, 2 and 3 respectively. Enhancement in Nusselt number was linked to additional swirl created by the Kenics mixer insert which improved fluid mixing and boundary layer disturbance. CFD results also showed that increasing the axial Reynold number augmented the Nusselt number but decreased the friction factor.

本文报道了在恒定壁热通量条件下，装有Kenics混合器的轴向旋转管中的流体流动和传热。使用商业有限体积CFD代码ANSYS Fluent 19.2处理数值模拟。使用可实现的k-ε湍流模型来关闭雷诺平均纳维-斯托克斯（RANS）方程。在模拟中考虑了浮力效应（βΔT）和重力（g = 9.81 m / s ²）。在10,000和30,000之间的轴向雷诺数范围内（10,000≤Re _a ≤30,000），Kenics混合器在旋转速度分别为1、2和3时，旋转管的Nusselt数分别提高了41–50％，38–47％和33–42％。Nusselt数的增加与Kenics混合器插件产生的附加涡流有关，后者改善了流体混合和边界层扰动。CFD结果还表明，增加轴向雷诺数会增加Nusselt数，但会减小摩擦系数。