Author(s): Saeed Hashemikia; Greet Deruyter; Tom De Mulder
Linked Author(s): Tom De Mulder
Keywords: Lab experiments; Large Eddy Simulations; Stability of persons; Urban flood
Abstract: Large Eddy Simulations (LES) are performed and validated with data from two lab experiments, with different porosity of the central block in a synthetic urban district. While the time-averaged results are of a similar satisfactory quality as other 3D numerical models which adopt a more simple turbulence modelling approach, and can equally be used to assess typical criteria for the stability of persons, an eddy-resolving approach is more suited for exploring turbulent and time-dependent, local flow features. Field observations showed the importance of these phenomena for stability of persons, yielding the need to re-assess the stability criteria.
Year: 2026