Informal settlement fires have been recognized as a global problem, affecting thousands of people annually and representing an extensive risk for millions. Informal settlements are characterized by poor infrastructure, lack of access to vital services, and flammable construction materials. This paper presents a simplified numerical simulation of a Colombian informal dwelling built with Guadua. The temperature and heat flux results are compared with respect to an informal timber dwelling. A sensitivity analysis of the mesh, computational domain, and burner configuration is performed. The results show that the properties of Guadua reduce the flashover growth rate, the heat fluxes at the door and window, and the maximum temperature of the enclosure compared to a timber dwelling. These results provide an opportunity to understand Colombia's informal dwelling fire damage and could afford to develop security strategies in the most critical areas.

In this paper is presented a description of a new engineering tool for evaluation of water-based fire suppression system (sprinklers), based on a high fidelity description of initial characteristics of the jet (sphere initialization from 4S device). The proposed model has three principal innovative advantages over classical Lagrangian approach: i) Speed: Fast calculation of the spray anywhere; ii) Description of the spray in the phase space, which turns the description of the spray into a time-independent, enabling compact, fast, and useful reconstruction of the spray; iii) Description of the spray as a set of 2D spray dispersion fields allowing considerable simplification of the spray field analysis. As results, a 2D visualization of the spray (volume flux), and an example of volume flux into a surface are reported.