Turbulent heat transport phenomena in multiple-started helically ribbed pipes are investigated. Such structures are applied to enhance heat transfer in various technical systems. A large-eddy simulation (LES) approach is used to model the turbulent flow field. The simulation results for heat transfer and pressure loss are in good agreement with available experimental data and the simulation model is successfully validated for complex surface geometries. For a better understanding of the impact of the wall structures on the turbulent transport processes, local profiles of the relevant flow variables values are investigated. Thus, the specific mechanism of the heat transfer enhancement can be explained and a knowledge-based optimization of innovative structures is possible.

中文翻译：

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使用大涡模拟研究多头带肋管的传热和压降

研究了多头螺旋肋管中的湍流传热现象。这种结构用于增强各种技术系统中的热传递。大涡模拟 (LES) 方法用于模拟湍流场。传热和压力损失的模拟结果与可用的实验数据非常吻合，并且模拟模型成功地验证了复杂的表面几何形状。为了更好地理解壁结构对湍流传输过程的影响，研究了相关流动变量值的局部剖面。因此，可以解释传热增强的具体机制，并且可以对创新结构进行基于知识的优化。