119 - Different scales needed to model fires with Lukas Arnold

If someone ever tells you they have modelled fire spread for a commercial project, with 20 cm grids and using generic materials from (old) FDS database, please do me a favour and redirect them to this episode. Because modelling fire is a seriously challenging thing. And by modelling, I really mean it. Not to apply a surrogate source based on a statistical overview of how fires looked like in the past for fuels of this kind. Not to omit half of the phenomena because they are too hard and...