零方程湍流模型提供了改进的速度和鲁棒性，但牺牲了与k-ε模型和CFD模拟中使用的其他流行双方程模型相关的广泛应用精度。对于绝对精度较低的应用，尤其是初始设计，零方程模型可能是最佳选择。我们评估了Chen Xu（1998）的零方程模型和两个利用壁函数提出的变体。我们通过对两个二维基准情况下的测量数据进行测试，评估了三个模型在大型（如运输集装箱尺寸）电气和电子外壳建模中的可预测性，这两个二维基准情况分别具有强迫对流和混合对流。我们还评估了应用于实际三维模块化变电站的选定模型。我们发现，虽然所有三个零方程模型都提供了合理的结果，但我们推荐使用近似壁函数的Chen Xu变体，因为该湍流模型提供了解决精度和计算效率的最佳平衡。 引文:2017年冬季会议，内华达州拉斯维加斯，会议论文

Zero-equation turbulence models offer improved speed and robustness at the expense of broad-application accuracyrelative to the k-ε model and other popular two-equation models employed in CFD simulations. For applications -- particularly,initial design -- in which absolute accuracy is a lower priority, a zero-equation model may be the best choice. We assess the Chen-Xu (1998) zero-equation model and two proposed variants that utilize wall functions. We evaluate the three models forsuitability in modeling large (e.g., shipping container size) electrical and electronics enclosures by testing the models againstmeasured data for two two-dimensional benchmark cases, which feature forced-convection and mixed-convection flows,respectively. We also evaluate selected models as applied to a practical three-dimensional modular electrical substation. We findthat, while all three zero-equation models deliver reasonable results, we recommend a Chen-Xu variant that utilizes anapproximate wall function, as this turbulence model provides the best balance of solution accuracy and computational efficiency.