age distribution function; shallow reservoir; water age; numerical modeling
Abstract :
[en] The age of a water particle in a shallow man-made reservoir is defined as the time elapsed since it entered it. Analyzing this diagnostic timescale provides valuable information for optimally sizing and operating such structures. Here, the constituent-oriented age and residence time theory (CART) is used to obtain not only the mean age, but also the water age distribution function at each location. The method is applied to 10 different shallow reservoirs of simple geometry (rectangular), in a steady-state framework. The results show that complex, multimodal water age distributions are found, implying that focusing solely on simple statistics (e.g., mean or median age) fails to reflect the complexity of the actual distribution of water age. The latter relates to the fast or slow pathways that water particles may take for traveling from the inlet to the outlet of the reservoirs.
Research center :
UEE - Urban and Environmental Engineering - ULiège
Disciplines :
Civil engineering
Author, co-author :
Dewals, Benjamin ; Université de Liège - ULiège > Département ArGEnCo > Hydraulics in Environmental and Civil Engineering
Archambeau, Pierre ; Université de Liège - ULiège > Département ArGEnCo > HECE (Hydraulics in Environnemental and Civil Engineering)
Bruwier, Martin ; Université de Liège - ULiège > Département ArGEnCo > Hydraulics in Environmental and Civil Engineering
Erpicum, Sébastien ; Université de Liège - ULiège > Scientifiques attachés au Doyen (Sc.appliquées)
Pirotton, Michel ; Université de Liège - ULiège > Département ArGEnCo > HECE (Hydraulics in Environnemental and Civil Engineering)
Adam, Tom; SGI Ingénieurs, 5032 Isnes, Belgium
Delhez, Eric ; Université de Liège - ULiège > Département d'aérospatiale et mécanique > Mathématiques générales
Deleersnijder, Eric ; Université Catholique de Louvain - UCL > Institute of Mechanics, Materials and Civil Engineering (IMMC) & Earth and Life Institute (ELI)
Language :
English
Title :
Age of Water Particles as a Diagnosis of Steady-state Flows in Shallow Rectangular Reservoirs
Publication date :
11 October 2020
Journal title :
Water
eISSN :
2073-4441
Publisher :
MDPI
Special issue title :
Tracer and Timescale Methods for Passive and Reactive Transport in Fluid Flows
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