variavel0=C. PINHO - ctp@fe.up.pt UNIV. PORTO Abstract. An adaptation of the classical model of single dropplet is proposed to obtain a simple model for the combustion of clouds of liquid droplets. The main objective is not the developping of a rigorous model to simulate all the physical and chemical phenomena competing in the control of this combustion phenomena but rather to give the students a simple tool to enable them to reach a quick understanding of the importance of the effects involved in the reaction. Keywords. droplet combustion, liquid spray combustion.