Vol.22, No.1, 2022, pp. 29–35
UDC:

A multi-storey building fire in a densely built-up urban area can easily spread into its neighbourhood. The aim of this study is to analyse the impact of fire in a multi-storey building on adjacent high buildings. For simulation of fire inside an office building and possibility of its spread to residential buildings, computational fluid dynamics large eddy simulation method has been used. Fire Dynamics Simulator software package with its graphical user inter-face PiroSym is used to numerically investigate the vulnerability of residential building structures. Since the ignition due to fire radiation is the most frequent way of fire spread from one building to another, the radiation levels at the façade surface of certain floors of exposed buildings to fire are investigated. The results show that the intensities of heat fluxes and temperatures on the façades of residential buildings depend on the quantity of flammable material burned during the fire as well as on the distance of exposed buildings from the fire-affected office building. These results can be used in spatial planning of cities and in the design of buildings to determine the safe separation distance between buildings in the function of fire protection.

Keywords: multi-storey buildings, numerical simulations, heat flux, temperature, structure vulnerability