超临界流动中篦式进水口水力容量:堰式方程

IF 1.6 3区环境科学与生态学 Q3 WATER RESOURCES Urban Water Journal Pub Date : 2023-05-04 DOI:10.1080/1573062X.2023.2209066

M. Cárdenas-Quintero, F. Carvajal-Serna

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引用次数: 0

摘要

城市风暴入口水力学研究一直依赖于量纲分析和数值模型，用经验方程来表示栅格的捕获过程。由于测试假设和提出的应用，各种公式产生了难以比较的分散知识。为了更好地了解城市栅格入口的集水情况，对3个栅格入口全尺寸(1:1)试验进行了重新分析，总流量为10 ~ 81 l/s，横向坡度为0.7% ~ 3%，纵向坡度为2% ~ 8%。对传统的堰式方程进行了适当的调整，使流速、深度水头等水头以及流量系数根据临近水流的弗劳德数在0.05 ~ 0.232之间变化。

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Hydraulic capacity of a grate inlet in supercritical flow: weir equation

ABSTRACT Studies on the hydraulics of urban storm inlets have relied on dimensional analysis and numerical models to represent the capture process of grates using empirical equations. Because of the test hypotheses and proposed applications, various formulations generate scattered knowledge that is difficult to compare. The experiments of three grates at full scale (1:1) are reanalyzed, with total flows ranging from 10 to 81 l/s, transversal slopes ranging from 0.7% to 3%, and longitudinal slopes ranging from 2% to 8% to better understand the catchment of urban grate inlets. The traditional weir equation has been properly adjusted, with the hydraulic head, such as the flow velocity and depth head, as well as the discharge coefficient varying between 0.05 and 0.232, depending on the Froude number of the approaching flow.

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来源期刊

Urban Water Journal WATER RESOURCES-

CiteScore

4.40

自引率

11.10%

发文量

101

审稿时长

3 months

期刊介绍： Urban Water Journal provides a forum for the research and professional communities dealing with water systems in the urban environment, directly contributing to the furtherance of sustainable development. Particular emphasis is placed on the analysis of interrelationships and interactions between the individual water systems, urban water bodies and the wider environment. The Journal encourages the adoption of an integrated approach, and system''s thinking to solve the numerous problems associated with sustainable urban water management. Urban Water Journal focuses on the water-related infrastructure in the city: namely potable water supply, treatment and distribution; wastewater collection, treatment and management, and environmental return; storm drainage and urban flood management. Specific topics of interest include: network design, optimisation, management, operation and rehabilitation; novel treatment processes for water and wastewater, resource recovery, treatment plant design and optimisation as well as treatment plants as part of the integrated urban water system; demand management and water efficiency, water recycling and source control; stormwater management, urban flood risk quantification and management; monitoring, utilisation and management of urban water bodies including groundwater; water-sensitive planning and design (including analysis of interactions of the urban water cycle with city planning and green infrastructure); resilience of the urban water system, long term scenarios to manage uncertainty, system stress testing; data needs, smart metering and sensors, advanced data analytics for knowledge discovery, quantification and management of uncertainty, smart technologies for urban water systems; decision-support and informatic tools;...