Computational fluid dynamics was used to investigate the laminar hydrodynamics and heat transfer performance of highly viscous fluid in Sulzer mixer reactor (SMR), which was validated with the heat transfer and visualization mixing experiments. Compared to a straight tube heat exchanger (STHE) and a straight tube heat exchanger with segmental baffles (STHE-SG), SMR exhibits more uniform distributions of velocity and temperature and narrower residence time distribution. The regularly arranged heat exchange tubes continuously twist and split the highly viscous fluid in SMR shell side, leading to radial mixing. In the range of Reynolds number (0.004–20), the Nusselt number of SMR is around 1.2–2.3 times as that of STHE and 1.2–1.6 times as that of STHE-SG. For the mixing and heat transfer of highly viscous fluid, SMR exhibits more effective mixing and better heat transfer performance in the laminar regime.

计算流体动力学用于研究高粘度流体在Sulzer混合反应器（SMR）中的层流动力学和传热性能，并通过传热和可视化混合实验对其进行了验证。与直管式热交换器（STHE）和带分段挡板的直管式热交换器（STHE-SG）相比，SMR的速度和温度分布更均匀，停留时间分布更窄。规则排列的热交换管不断扭曲和分裂SMR壳侧的高粘度流体，从而导致径向混合。在雷诺数（0.004–20）的范围内，SMR的Nusselt数约为STHE的1.2–2.3倍，是STHE-SG的1.2–1.6倍。对于高粘度流体的混合和传热，