基于Fluent螺旋槽管的传热特性数值模拟

根据螺旋槽管的结构特点及传热特性，建立了三种不同槽口形状的螺旋槽管与光滑管换热器的三维模型。以水为工质，运用 Fluent流体分析软件，采用k-ε湍流模型，研究了三种不同槽口形状的螺旋槽管与光滑管换热器在换热过程中的速度场和温度场，得到了不同槽口形状和光滑管的壁面Nusselt数。结果表明。在相同壳程和雷诺数的情况下，螺旋槽管比光滑管的换热能力提高了6．7％-37．6%，其中三角彤槽和矩形槽螺旋槽管的换热能力提高最大，从而强化了传热。为谊产品的理论进一步研究和实验研究奠定了基础，为谊产品的设计和推广应用提供了依据。

Numerical Simulation on Heat Transfer Property of Spiral Groove Tube with Fluent

The 3D models of three different shapes of the spiral groove and the smooth tube heat exchangers are created, according to the structure and heat transfer characteristics of the spiral groove tube. The velocity field and temperature field of these tubes are studied by using the Fluent software and the k-ε turbulence model in the heat transfer process, in which water is as working medi- um. At the same time, it gains the wall Nusselt number of these tubes. The results show that, the heat exchange capacity of the spiral pipe increases by 6.7% - 37.6% than that of the smooth tube in the same shell side and Reynolds number, among which that of the triangle and rectangular spiral groove tubes is the best. Therefore, the spiral groove tube can enhance thel heat exchanger capacity, which is helpful for the product＇s theory research and experimental study in future. Meanwhile, it provides the basis for the design and application of the product.