Article (Scientific journals)
Drift of a drowning victim in rivers: conceptualization and global sensitivity analysis under idealized flow conditions
Delhez, Clément; Rivière, Nicolas; Erpicum, Sébastien et al.
2023In Water Resources Research
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Keywords :
drowning; drift model; human body; sensitivity analysis
Abstract :
[en] We present a conceptual model of the drift of a drowning victim in a river, accounting for the mechanical effects of body decomposition. The model was tested under idealized flow conditions (uniform flow) and a global sensitivity analysis was performed. Uncertainties in body morphology, flow-body interaction parameters (e.g., drag coefficient) and drowning characteristics were considered. The results emphasize the importance of predicting the body vertical position since it considerably influences the streamwise body drift velocity, due to the significant difference between near-surface and near-bed velocity. The results also highlight the value of testimonies providing information on body mass and height, as decreasing uncertainty on these input data strongly reduces uncertainties on the predicted body streamwise position. Next step of the research will consist in coupling the model with an Eulerian multidimensional model of river hydrodynamics.
Disciplines :
Civil engineering
Author, co-author :
Delhez, Clément  ;  Université de Liège - ULiège > Urban and Environmental Engineering
Rivière, Nicolas;  INSA Lyon - Institut National des Sciences Appliquées de Lyon [FR]
Erpicum, Sébastien  ;  Université de Liège - ULiège > Urban and Environmental Engineering
Pirotton, Michel ;  Université de Liège - ULiège > Département ArGEnCo > HECE (Hydraulics in Environnemental and Civil Engineering)
Archambeau, Pierre  ;  Université de Liège - ULiège > Département ArGEnCo > HECE (Hydraulics in Environnemental and Civil Engineering)
Arnst, Maarten ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > Computational and stochastic modeling
Bierens, Joost;  VU University Medical Centre
Dewals, Benjamin  ;  Université de Liège - ULiège > Département ArGEnCo > Hydraulics in Environmental and Civil Engineering
Language :
English
Title :
Drift of a drowning victim in rivers: conceptualization and global sensitivity analysis under idealized flow conditions
Alternative titles :
[fr] Dérive d'une victime de noyade en rivière : conceptualisation et analyse de sensibilité globale dans des conditions d'écoulement idéales
Publication date :
16 October 2023
Journal title :
Water Resources Research
ISSN :
0043-1397
eISSN :
1944-7973
Publisher :
Wiley, Hoboken, United States - New Jersey
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 02 October 2023

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