The flow classification developed by Thompson and Souza Mendes [Int. J. Engng. Sci. 43 (2005) 79-105] is applied to radial and squeeze flows between two parallel disks. Based on the lubrication approximation, explicit expressions of the flow classification parameter, namely $ℛ$, could be obtained for those flows, and the results for power-law and Bingham fluids are presented. It is shown that $0\le ℛ\le 1$ in the radial flow of both power-law and Bingham fluids, which reflects mixed shear and extensional flow. In the squeeze flow of a power-law fluid, the overall distribution of $ℛ$ is similar to the radial flow case. In the squeeze flow of a Bingham fluid, on the other hand, it is noted that there can be a particular region where $ℛ>1$, which is due to the rapid rotation of the principal axes of the rate-of-strain tensor.

由Thompson和Souza Mendes [Int。J. Engng。科学 [J.Am.Chem.Soc.43（2005）79-105]应用于两个平行盘之间的径向流动和挤压流动。基于润滑近似，流分类参数的明确表达式，即$ℛ$可以得到这些流量的，并给出幂律和宾厄姆流体的结果。结果表明$0\le ℛ\le \mathrm{1个}$幂律流体和宾厄姆流体的径向流动中都反映了混合剪切和扩展流动。在幂律流体的挤压流动中，整体分布$ℛ$与径向流动情况相似。另一方面，在宾厄姆流体的挤压流中，可能会存在一个特定区域$ℛ>\mathrm{1个}$，这是由于应变率张量的主轴快速旋转所致。