对光滑波纹翅片管式换热器的空气侧传热和压降特性进行了数值研究。所有计算均使用CFD软件进行。采用了一种三维方法，考虑了翅片中的传导和沿流动路径存在的管道。在所有计算中，流动都被视为不可压缩、层流和稳定的。计算雷诺数Re Dh，范围为250至1200，对应于1 m/s至5.5 m/s（3.3 ft/s至18 ft/s）的锋面空气速度。与实验数据的比较表明，计算模型预测的Colburn j因子在11.5%以内。数值分析往往会在低雷诺数下高估Colburn j系数，并在工作雷诺数范围内高估摩擦系数11%至19%。 除稳定流分析外，在雷诺数最高的情况下（Re Dh=1200），使用非稳定流模型与稳定流模型进行比较。单位:双引文:研讨会，ASHRAE交易，第106卷，pt。2.

A numerical study is presented to predict the air-side heat transfer and pressure drop characteristics of fin-and-tube heat exchangers with a smooth wavy fin geometry. All calculations are performed using CFD software. A three-dimensional approach is used that considers conduction in the fins and the presence of tubes along the flow path. The flow is treated as incompressible, laminar, and steady for all calculations. Computations are performed for Reynolds numbers, Re Dh, ranging from 250 to 1200, corresponding to frontal air velocities ranging from 1 m/s to 5.5 m/s (3.3 ft/s to 18 ft/s). Comparison with experimental data shows that the computational model predicts the Colburn j factor within 11.5%. The numerical analysis tends to overpredict the Colburn j factor at low Reynolds numbers and overpredict the friction factor by 11% to 19% over the operating Reynolds number range. In addition to the steady flow analysis, an unsteady flow model is used at the highest Reynolds number case, Re Dh = 1200, to compare to the steady flow model.Units: Dual