Walking through smoke

Talk at the Visibility Seminar 2026 in Wuppertal.

September 25, 2026 · Dr. Habil. Mohcine Chraibi

Today I gave a talk at the Visibility Seminar 2026 at the University of Wuppertal: A Modular Workflow for Visibility-Aware Evacuation Modelling.

The workflow is pyFDS-Evac. It couples FDS, fdsreader, fdsvismap and JuPedSim, so that smoke from a fire simulation affects how agents walk and which exits they choose.

Agents leaving a generated world with four exits while smoke spreads; agents are coloured by their speed factor — A coupled FDS run on a generated world with four exits. Background: smoke extinction coefficient at 2 m. Dots: agents, coloured by the speed factor they experience in the smoke.

The slides are online: Visibility Seminar 2026.

Dr. Habil. Mohcine Chraibi

Head of the division Pedestrian Dynamics - Modeling at Civil Safety Research

Walking through smoke