The enhancement of convective heat transfer in single‐phase heat transfer through the use of helicoidally corrugated tubes has been studied numerically. By comparing the large eddy simulation (LES) results with detailed Stereo‐PIV and Liquid Crystal Thermography measurements obtained at the von Karman Institute for Fluid Dynamics (VKI), a validated numerical framework was obtained. Heat transfer enhancements of 83–119% were seen, at the cost of pressure losses that were approximately 5.6 to 6.7 times higher than for a bare tube. To extrapolate the results to industrial Reynolds numbers at which experimental data is scarce, the simulation data was used to develop an improved near‐wall Reynolds stress transport model (RSTM) that more accurately describes the heat flux vector. Comparison of both global and local flow characteristics at different Reynolds numbers confirms that the approach allows more accurate predictions over a wider range of design and operating parameters than using two‐equation turbulence models, while the computational cost is still significantly lower than LES. © 2017 American Institute of Chemical Engineers AIChE J, 64: 1702–1713, 2018

中文翻译：

---

螺旋波纹管传热的数值和实验评估

通过使用螺旋波纹管对单相传热中对流传热的增强进行了数值研究。通过将大涡模拟（LES）结果与在von Karman流体动力学研究所（VKI）获得的详细的Stereo-PIV和液晶热成像测量结果进行比较，获得了经过验证的数值框架。可以看到传热增强了83–119％，而压力损失的成本大约是裸管的5.6至6.7倍。为了将结果外推到缺乏实验数据的工业雷诺数，该模拟数据用于建立改进的近壁雷诺应力传递模型（RSTM），该模型可以更准确地描述热通量矢量。比较不同雷诺数下的整体和局部流动特性，证实了与使用二方程湍流模型相比，该方法可以在更宽的设计和运行参数范围内进行更准确的预测，而计算成本仍显着低于LES。©2017美国化学工程师学会AIChE J，64：1702–1713，2018