Spacecraft Fire Experiment I
nasa.gov
nasa.gov
PS: It also looks cool, so IMO people would be messing with it even if they could model it well. https://www.youtube.com/watch?v=9zdD7lfB0Fs
No One has ever tested how fires bigger than matches behave in space.
Since it would be stupid to make a big fire in the space station, the inside of a cargo spaceship will be rigged with a dozen materials to light on fire before the cargo ship burns up entering the atmosphere.