【摘要】 水平管道流动广泛应用于石油天然气输送、能源与动力工程以及热工等领域。圆管内的传热与传质问题是一个常见的研究对象。尽管针对圆管湍流已经开展了大量研究，但针对湍流工况的预测模型构建仍然是一个重要的研究方向。以往研究主要集中于湍流的微观机理，而对工程简化建模所需的对称性问题关注较少。该文在对数值模型进行实验验证的基础上，采用基于雷诺平均纳维–斯托克斯（RANS）的数值模拟方法，对湍流特性进行研究。对这些特性的评估有助于构建预测模型。研究结果表明，圆管内湍流在湍流强度和湍动能方面表现出较强的对称性。这一认识不仅有助于理论模型的发展，而且对优化圆管内的传热与传质过程研究具有参考价值。更多还原

【Abstract】 The horizontal pipe flow is widely applied in oil and gas transportation, energy and power engineering, thermal engineering, and other fields. Heat and mass transfer within circular pipes is a common subject of study. Although considerable research has been conducted on turbulent flow in circular pipes, the construction of predictive models for turbulent regimes remains a key research focus. Previous investigations have mainly concentrated on the microscopic mechanism of turbulence, while less attention has been paid to the symmetry aspects required for simplified modeling in engineering applications. In this paper, a Reynolds-averaged Navier-Stokes(RANS) numerical simulation approach is adopted based on experimental verification of the numerical model to investigate turbulence characteristics. Evaluating these characteristics is helpful for constructing predictive models. The results show that turbulence in circular pipes exhibits strong symmetry in terms of turbulence intensity and turbulent kinetic energy. This understanding is beneficial for theoretical model development and offers valuable reference in optimizing heat and mass transfer in circular pipes.更多还原