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N. Schjerve, U. Schneider:
"Modeling of Ignition and Flame Spread in the Initial Phase of a Fire";
Talk: 12th SMIRT Pre-Conference Seminar, TÜV Süd München (invited); 2011-09-13 - 2011-09-15; in: "Fire Safety in Nuclear Power Plants and Installations", (2011), 16 pages.

Computational Fluid Dynamics (CFD) simulations with the Fire Dynamic Simulator 5 (FDS 5) are carried out to investigate ignition and upward flame spread in the initial phase of a fire. The research includes both thin and thick solids, represented by cellu-lose-sheets and PMMA samples, the latter of 5 mm thickness. Upward flame spread is examined for different inclined surfaces from horizontal to vertical orientation. It is found possible to simulate ignition for both materials with FDS 5, but flame spread can only be achieved in some PMMA scenarios. The FDS predictions are compared to ex-perimental data for upward flame spread on PMMA samples. The simulations with FDS 5 show limitations in simulating flame spread and ignition for small fires (low HRR) and the influence of the user on modeling and results of the simulations.

CFD Simulation, flame spread, ignition,