采用标准k-ε涡粘性模型（EVM）和两个二阶矩闭合模型——代数应力模型（ASM）（Hossain和Rodi 1982）和微分应力模型（DSM）（Launder等人1975），对房间内的三维非等温射流进行了数值分析。将这些湍流模型给出的数值结果与实验结果进行了比较，并对结果中存在的预测误差进行了检验，从而阐明了k-epsilon-EVM和二阶矩闭合模型之间的相对结构差异。由于二阶矩闭合模型清楚地反映了流场的湍流结构，因此它们比k-epsilon EVM更精确。 DSM和ASM之间也存在微小差异——基于ASM中雷诺应力传输方程中对流和扩散项的不当近似——也被观察到。关键词:比较，水平，空气射流，房间，湍流，模型，计算，比较，实验，精度，气流，空气运动，热流，温度分布，空气扩散，对流引用:研讨会，ASHRAE Trans。1994年，第100卷，第2部分

A three-dimensional nonisothermal jet in a room is analysed numerically by the standard k-epsilon eddy viscosity model (EVM) and two second-moment closure models - the algebraic stress model (ASM) (Hossain and Rodi 1982) and the differential stress model (DSM) (Launder et al. 1975). Numerical results given by these turbulence models are compared with experimental results, and the prediction errors existing in the results are examined, thus clarifying the relative structural differences between the k-epsilon EVM and the second-moment closure models. Since the second-moment closure models clearly manifest the turbulence structures of the flow-field, they are more accurate than the k-epsilon EVM. A small difference between the DSM and the ASM - one based on an inappropriate approximation of the convection and diffusion terms in the Reynolds stress transport equations in the ASM - is also observed.KEYWORDS: comparing, horizontal, air jets, rooms, turbulent flow, models, calculating, comparing, experiment, accuracy, air flow, air movement, heat flow, temperature distribution, air diffusion, convection