Development of an innovative for the urban drainage systems design and rehabilitation: transient flow with entrapped air based approach

城市排水系统设计和修复的创新开发：基于滞留空气方法的瞬态流

• 批准号: 326913-2008
• 负责人: Fuamba, Musandji
• 金额: $ 1.31万
• 依托单位: École Polytechnique de Montréal
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2011
• 资助国家: 加拿大
• 起止时间: 2011-01-01 至 2012-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=481499
• 关键词: Development; innovative; urban; drainage; systems

Transient flows can cause hydraulic failures such as collapse of infrastructure, manhole cover blow off, geysers, and basement flooding, as well as the release of air from the manholes. The transition phenomenon coupled to the trapped air problem has critical effects, yet existing numerical models (such as Mike, HydroWorks, SWMM ...) dealing with the drainage systems simulations either neglect or excessively simplify it. In fact, such models generally use non-dynamic hypotheses such as the open-slot approach and the non presence of trapped air into flowing water. The transient flow dynamic analysis should be part of both the design and the rehabilitation processes for building highly efficient sustainable drainage infrastructures. Because the current design approach lacks this kind of analysis, drainage systems face unpredictable phenomena, making them unsafe and vulnerable.

瞬变流可导致水力故障，如基础设施倒塌、人孔盖脱落、间歇泉和地下室洪水，以及人孔中的空气释放。过渡现象耦合到滞留空气问题具有关键的影响，但现有的数值模型（如迈克，HydroWorks，SWMM.）实际上，这种模型通常使用非动态假设，例如开口槽方法和流动水中不存在滞留空气。瞬变流动态分析应该是设计和修复过程的一部分，以建立高效的可持续排水基础设施。由于目前的设计方法缺乏这种分析，排水系统面临不可预测的现象，使他们不安全和脆弱。