建筑排水立管数值模拟的初步探讨及应用

Application and Preliminary Study on the Numerical Simulation of Building Drainage riser

近十多年来,计算流体动力学(CFD)已发展到完全可以分析三维粘性湍流及漩涡运动等复杂问题。它不仅作为一个研究工具,而且还作为设计工具在水利工程、土木工程、环境工程、工业制造等领域发挥作用。文章通过具体算例,探讨了计算流体力学软件Fluent关键参数的设置,并将数值模拟的计算结果与经典立管试验结果进行了分析比较。结果表明,Fluent计算结果与立管试验结果在压强分布规律上完全一致。即CFD模拟技术可以应用于建筑排水立管研究。

Over the past decades,the complex issues such as three-dimensional viscous turbulent and vortex motion have been completely analysed by Computational Fluid Dynamics（CFD）,which is not only as research tool but design tool in hydraulic engineering,civil engineering,environmental engineering,industrial manufacturing,and so on.The key parameters setting of CFD software-Fluent was discussed through specific examples,Besides,the comparison of results about numerical simulation and classic risers test was done in this paper.It shows that the results about Fluent simulation and riser＇s experiment are extremely consistent in pressure distribution,that is to say,CFD technique could be applied to research on building drainage riser.