Kim Minyoung, Borhan Ali
Department of Chemical Engineering, The <a href="https://ror.org/04p491231">Pennsylvania State University</a>, University Park, Pennsylvania 16802, USA.
Phys Rev E. 2024 Nov;110(5-2):055101. doi: 10.1103/PhysRevE.110.055101.
Mass transfer to the reactive wall of a curved cylindrical tube is analyzed in the combined entry region where both momentum and concentration boundary layers are developing. The velocity and concentration distributions developing from uniform inlet profiles are obtained using perturbation analysis, accounting for acceleration of the inviscid flow outside the boundary layer arising from channel curvature and flow displacement. The enhancement in the average flux of the reactive species at the tube wall downstream of the inlet is determined and compared to predictions of numerical simulations. A regression model is presented for the cross-sectional average of the Sherwood number, valid for distances up to ten tube diameters downstream of the tube inlet over a wide range of Reynolds and Schmidt numbers.
在动量和浓度边界层均在发展的组合入口区域，分析了向弯曲圆柱形管道反应壁的传质情况。利用摄动分析得到了从均匀入口剖面发展而来的速度和浓度分布，其中考虑了由通道曲率和流动位移引起的边界层外无粘流的加速。确定了入口下游管道壁处反应物种平均通量的增强，并与数值模拟的预测结果进行了比较。提出了一个适用于在很宽的雷诺数和施密特数范围内、管道入口下游多达十个管径距离的舍伍德数横截面平均值的回归模型。
