Modelling of burning behaviour of single and multi-component fuels under combustion conditions in pool fires

RWTH Publications (RWTH Aachen)

Abstract

In this work a model that reproduces the transient evaporation behaviour of pool fires during the combustion process is developed. The model calculates the mass burning rate which represents the amount of evaporated liquid fuel during a pool fire. The evaporation model is further extended to include multicomponent fuels. The evaporation model can be used to provide the inlet boundary conditions of the evaporated fuel for a coupled CFD simulation. An experimental setup for conducting measurements of the mass burning rate and the temperature inside the liquid fuel of a pool fire has been constructed. The experimental results were used for the validation of the calculated results. The fuel used for the pool fires were n-Heptane, Ethanol, mixture of n-Heptane and Ethanol in various ratios and heating oil. The developed evaporation model is capable of generating realistic mass burning rates which can be used to predict the combustion behaviour of pool fires. The model was also successfully coupled with the FireFOAM solver and was used to calculate the inlet boundary for the CFD simulation of a n heptane pool fire.

Authors 1

1. Primpuna Habib Saptogino corresponding Aachen

   RWTH Aachen University

   Affiliation as printed

   RWTH Aachen