Kalse S G C, Bijl H, van Oudheusden B W
Department of Aerospace Engineering, Delft University of Technology, Kluyverweg 1, 2629 HS Delft, The Netherlands.
J Biomech Eng. 2003 Jun;125(3):355-62. doi: 10.1115/1.1580524.
A new one-dimensional model is presented for the calculation of steady and unsteady flow through an indented two-dimensional channel with separation and reattachment. It is based on an interactive boundary layer approach, where the equations for the boundary layer flow near the channel walls and for an inviscid core flow are solved simultaneously. This approach requires no semi-empirical inputs, such as the location of separation and reattachment, which is an advantage over other existing one-dimensional models. Because of the need of an inviscid core alongside the boundary layers, the type of inflow as well as the length of the channel and the value of the Reynolds number poses some limitations on the use of the new model. Results have been obtained for steady flow through the indented channel of Ikeda and Matsuzaki. In further perspective, it is discussed how the present model, in contrast to other one-dimensional flow models, can be extended to calculate the flow in nonsymmetrical channels, by considering different boundary layers on each of the walls.
提出了一种新的一维模型，用于计算通过具有分离和再附着的二维锯齿形通道的稳态和非稳态流动。该模型基于一种交互式边界层方法，其中同时求解通道壁附近边界层流动和无粘核心流动的方程。这种方法不需要诸如分离和再附着位置等半经验输入，这是相对于其他现有一维模型的一个优势。由于在边界层旁边需要一个无粘核心，流入类型以及通道长度和雷诺数的值对新模型的使用造成了一些限制。已经获得了通过池田和松崎的锯齿形通道的稳态流动结果。从进一步的角度来看，讨论了与其他一维流动模型相比，如何通过考虑每个壁上不同的边界层，将当前模型扩展到计算非对称通道中的流动。
