Semi- vs. Fully-Distributed Urban Stormwater Models: Model Set Up and Comparison with Two Real Case Studies

摘要: Urban stormwater models can be semi-distributed (SD) or fully distributed (FD). SD are based on subcatchment units with various land use types, where rainfall is applied and runoff volumes estimated routed. FD the two dimensional (2D) discretization of overland surface, which has a finer resolution each grid-cell representing one type, directly routed by 2D flow module. While have been commonly in urban modeling, generally more detailed theoretically realistic. This paper presents comparison between using case studies Coimbra (Portugal) London (UK). To enable direct setups, model-building process proposed novel sewer inlet representation applied. modeling results compared against observed records sewers photographic flood events. The suggest that sensitive to surface storage parameters require higher detail network representation.