论文部分内容阅读
本文运用Fluent软件构建3种翅片类型的风冷冷凝器局部模型,对管外空气侧的流动与换热过程进行数值模拟。模拟结果通过实验数据验证,并进行了较为详细的误差分析。在此基础上,进一步分析3种翅片结构下,管外换热系数和摩擦因子随进风速度的变化规律,辨识3种翅片的适用范围。同时,通过场协同理论对翅片截面上的温度场与速度场进行协同性分析,分析结果对冷凝器翅片结构的设计与改进提供一定参考依据。
In this paper, we use Fluent software to build three kinds of fin-type air-cooled condenser local model to simulate the flow and heat transfer on the air side outside the tube. The simulation results are verified by experimental data and a detailed error analysis is carried out. On this basis, the variation rules of the heat transfer coefficient and the friction factor with the inlet air velocity under the three fin structures were further analyzed, and the applicable range of the three kinds of fins was identified. At the same time, the synergetic analysis of the temperature field and the velocity field on the fin cross section is conducted by the field synergy theory. The analysis results provide some references for the design and improvement of the condenser fin structure.