Inicio  /  Water  /  Vol: 15 Par: 9 (2023)  /  Artículo
ARTÍCULO
TITULO

Experimental Study of Geysering in an Upstream Vertical Shaft

Daniel G. Allasia    
Liriane Élen Böck    
Jose G. Vasconcelos    
Leandro C. Pinto    
Rutineia Tassi    
Bruna Minetto    
Cristiano G. Persch and Robson L. Pachaly    

Resumen

Transient flows in stormwater systems can lead to damaging and dangerous operational conditions, as exemplified by geysering events created by the uncontrolled release of entrapped air pockets. Extreme rain and associated rapid inflows may result in air pocket entrapment, which causes significant changes in flow conditions and potentially geysering. Stormwater geysers have been studied in different experimental and numerical modeling studies, as well as from limited data gathered within real systems. However, there is still no complete understanding of geysering events, as stormwater system geometries vary considerably. Most past studies involved releasing air from an intermediate shaft, in which a significant fraction of the entrapped air may bypass the release. This work advances the understanding of geysering by considering uncontrolled air release through an upstream shaft or manhole. In such cases, the entire air pocket is released upon reaching the shaft, worsening the occurrence of geysering. Pressure and water level measurements were performed for various combinations of initial water pressure, trapped air pocket volume, and vertical shaft geometries, indicating the higher severity of these geysering events. The results obtained also corroborate previous studies in that the measured pressure heads were lower than the grade elevation. Future studies should include larger-scale testing and the representation of this geometry using CFD.

 Artículos similares

       
 
Zhike Zou, Longcang Shu, Xing Min and Esther Chifuniro Mabedi    
The artificial recharge of stormwater is an effective approach for replenishing aquifer and reduce urban waterlogging, but prone to clogging by suspended particles (SP) that are highly heterogeneously sized. In this paper, the transport and deposition of... ver más
Revista: Water

 
Zuhier Alakayleh, Xing Fang and T. Prabhakar Clement    
This study aims at furthering our understanding of the Modified Philip?Dunne Infiltrometer (MPDI), which is used to determine the saturated hydraulic conductivity Ks and the Green?Ampt suction head ? at the wetting front. We have developed a forward-mode... ver más
Revista: Water

 
Ewa Stanczyk-Mazanek, Longina Stepniak and Urszula Kepa    
In this paper, we discuss the effect sewage sludge (SS) application has on the contamination of polycyclic aromatic hydrocarbons in fertilized soils and groundwater. Morver, the contents of these compounds in plant biomass was analyzed. For six months, c... ver más
Revista: Water

 
Xiaoni Yang, Juanjuan Ma, Yongye Li, Xihuan Sun, Xiaomeng Jia and Yonggang Li    
Hydraulic transportation of the piped carriage is a new energy-saving and environmentally-friendly transportation mode. There are two main states in the conveying process, stationary and moving. In the process of hydraulic transportation of the piped car... ver más
Revista: Water

 
Taufiq Saidi,Taufiq Saidi,Muttaqin Hasan,Muttaqin Hasan,Zahra Amalia,Muhammad Iqbal,Muhammad Iqbal     Pág. 155 - 164
The use of synthetic Fiber Reinforced Polymer (FRP) as a composite material is an alternative material that has been widely used for strengthening and repairing reinforced concrete structures. However, the high price is one of the obstacles in applying s... ver más