基于Workbench对矩形管道流固耦合分析
Fluid-Structure Coupling Analysis of Rectangular Pipeline Based on Workbench

为深入探讨系统中弯道部分流态的演变以及结构场的变化，实践中可采取实验测定法，然而该方式在捕捉弯管流动细节方面显得力不从心。应用FLUENT软件搭载的实用型k-ε湍流模型，对直矩形管道内的流态进行数值仿真研究。通过模拟分析工具，便捷地获取了介质流过弯管时的压力场分布图及速度矢量分布图，从而使介质的压力与速度变化得以直观呈现。在弯管的运作中，由于曲率引起的离心效应，导致管道外层压力超出内层。另一方面，贴近弯道内侧的流速明显胜过外侧。结构场分析表明壁厚5 mm的管道在出风口发生了微小的变形。借助Workbench软件的仿真模拟，展现了流体在弯管中流动的复杂现象及变化逻辑，为理解实际流态分布提供了借鉴，并且为后续的结构改善与设计优化奠定了基础。
In order to investigate the evolution of the diverting state and the change of the structure field, experimental measurement method can be used in practice, but it is insufficient to capture the details of the flow of the bend pipe. By using the practical k-ε turbulence model installed by FLUENT software, the numerical simulation of the flow state in a straight rectangular pipeline is carried out. The pressure field distribution diagram and velocity vector distribution diagram of the medium flowing through the bending pipe are easily obtained by the simulation analysis tool, so that the pressure and velocity changes of the medium can be intuitively presented. In the operation of bending pipe, the centrifugal effect caused by curvature causes the outer pressure of pipe to exceed the inner layer. On the other hand, the flow rate near the inside of the curve is significantly better than the outside. The structural field analysis shows that the pipe with a wall thickness of 5mm has a slight deformation at the outlet. With the help of the simulation of Workbench software, the complex phenomena and change logic of fluid flow in the bend pipe are shown, which provides a reference for understanding the actual flow distribution and lays a foundation for the subsequent structural improvement and design optimization.