Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Detention Storage over 2D Laboratory Watersheds at Concentration Time
Water balances, for two-dimensional (2D) laboratory experiments with long-duration rainfalls over planar aluminum surfaces, indicate that at time of concentration the detention storage comprises about 70% of the accumulating inflow. Under the applied experimental conditions, its spatially averaged depth is 1 to 6 mm. This depth increases with rainfall intensity and decreases with main watershed slope. The time of concentration is defined here from rainfall commencement until the outflow begins a gradual approach towards the equilibrium state. It was shown, in an earlier paper, that the ratio of peak runoff discharge to rate of supply attributable to rainfall of a shorter duration is linearly related to the ratio of rainfall duration to time of concentration. Such a relation led to the formulation of the 120-year-old Rational Formula, commonly used for hydrologic design of populous districts. The similarity between laboratory and field results allows considering the detention depths in the laboratory as fairly representing the depths over outdoor impervious surfaces.
Detention Storage over 2D Laboratory Watersheds at Concentration Time
Water balances, for two-dimensional (2D) laboratory experiments with long-duration rainfalls over planar aluminum surfaces, indicate that at time of concentration the detention storage comprises about 70% of the accumulating inflow. Under the applied experimental conditions, its spatially averaged depth is 1 to 6 mm. This depth increases with rainfall intensity and decreases with main watershed slope. The time of concentration is defined here from rainfall commencement until the outflow begins a gradual approach towards the equilibrium state. It was shown, in an earlier paper, that the ratio of peak runoff discharge to rate of supply attributable to rainfall of a shorter duration is linearly related to the ratio of rainfall duration to time of concentration. Such a relation led to the formulation of the 120-year-old Rational Formula, commonly used for hydrologic design of populous districts. The similarity between laboratory and field results allows considering the detention depths in the laboratory as fairly representing the depths over outdoor impervious surfaces.
Detention Storage over 2D Laboratory Watersheds at Concentration Time
Ben-Zvi, Arie (Autor:in)
Journal of Hydrologic Engineering ; 17 ; 1053-1057
14.12.2011
52012-01-01 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Detention Storage over 2D Laboratory Watersheds at Concentration Time
| Online Contents | 2012
Detention Storage over 2D Laboratory Watersheds at Concentration Time
| British Library Online Contents | 2012
Closure to “Detention Storage over 2D Laboratory Watersheds at Concentration Time” by Arie Ben-Zvi
| Online Contents | 2014