Author(s): Cosimo Peruzzi; Stefano Lanzini; Massimo Marro; Livia Grandoni; Thierry Kubwimana; Antoine Mos; Pietro Salizzoni
Linked Author(s): Cosimo Peruzzi
Keywords: Buoyant flows; Stratified turbulence; Mass exchangers; Laser-based flow diagnostics
Abstract: In recent decades, tunnel fires have garnered significant attention due to their impact on driver safety. Most studies, both experimental and theoretical, have focused on "empty" tunnels (without vehicles) to simplify the analysis, though this idealized approach could limit the applicability of results to real road tunnels (Oka & Atkinson, 1995). This study uses a reduced-scale tunnel to experimentally examine the influence of vehicles on combined ventilation systems, i.e. a ventilation system where a longitudinal airflow coexists with transverse aspiration. The analysis evaluates smoke extraction efficiency in confined conditions, i.e. in preventing back-layering, considering various damper shapes and positions and vehicle sizes.
Year: 2025