计算流体动力学(CFD)在建筑排水系统中的应用

建筑排水系统的设计依据是最大使用限度理念,该理念由概率论和恒定流理论发展而来.这种基于恒定流理论的现有方法,对排水立管流态、瞬态压强传播机理、系统内气体运动模式、虹吸雨水排水系统初始阶段的管道水流状态等问题的分析难以取得有效进展,而对排水系统内部非恒定水流运动情况的详细分析已成为该领域的研究趋势.介绍了研究建筑排水系统内气水运动模式的计算流体动力学(CFD)方法,并总结了CFD在国外排水系统中的应用情况.

Application of computational fluid dynamics (CFD) in the water supply and drainage system of building

The base for the building water supply and drainage system design is the maximum service limit concept, which originates from the probability theory and steady flow theory. The current based on steady flow method can not make further progress in the fields of vertical drainage pipe flow stage, instant pressure transportation theory, gas moving pattern, and fluid state in the siphon at the initial rainwater drainage stage, while the detailed analysis on the unsteady flow state inside the drainage system has become the research tendency in this field. This paper introduced the computational fluid dynamics (CFD) methods to study the gas and fluid moving patterns in the building water supply and drainage system and summarized the abroad application of CFD in the drainage system.