Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Energy Dissipation in Circular Drop Manholes under Different Outflow Conditions
Circular drop manholes have been an important device for energy dissipation and reduction of flow velocities in urban drainage networks. The energy dissipation in a drop manhole depends on the manhole flow patterns, the outflow regimes in the exit pipe and the downstream operation conditions, and is closely related to the hydraulic and geometric parameters of the manhole. In the present work, the energy dissipation of a drop manhole with three drop heights was experimentally investigated under free outflow conditions and constrained outflow conditions. The results demonstrate that the local head loss coefficient is solely related to the dimensionless drop parameter for free surface outflow without a downstream backwater effect, whereas it depends on the dimensionless submerge parameter for constrained outflow. Moreover, it is concluded that the energy dissipation is largely promoted when outlet choking occurs.
Energy Dissipation in Circular Drop Manholes under Different Outflow Conditions
Circular drop manholes have been an important device for energy dissipation and reduction of flow velocities in urban drainage networks. The energy dissipation in a drop manhole depends on the manhole flow patterns, the outflow regimes in the exit pipe and the downstream operation conditions, and is closely related to the hydraulic and geometric parameters of the manhole. In the present work, the energy dissipation of a drop manhole with three drop heights was experimentally investigated under free outflow conditions and constrained outflow conditions. The results demonstrate that the local head loss coefficient is solely related to the dimensionless drop parameter for free surface outflow without a downstream backwater effect, whereas it depends on the dimensionless submerge parameter for constrained outflow. Moreover, it is concluded that the energy dissipation is largely promoted when outlet choking occurs.
Energy Dissipation in Circular Drop Manholes under Different Outflow Conditions
Feidong Zheng (Autor:in) / Yun Li (Autor:in) / Jianjun Zhao (Autor:in) / Jianfeng An (Autor:in)
2017
Aufsatz (Zeitschrift)
Elektronische Ressource
Unbekannt
Metadata by DOAJ is licensed under CC BY-SA 1.0
Energy Dissipation in Circular Drop Manholes
| British Library Online Contents | 2017
Energy Loss in Circular Drop Manholes
| British Library Conference Proceedings | 2009
Energy Losses at Circular Drop Manholes
| British Library Conference Proceedings | 1996
Hydraulic of Circular Drop Manholes
| British Library Online Contents | 2011
Air-water flows in circular drop manholes
| Taylor & Francis Verlag | 2015