variavel0=<b>HUMBERTO ARAUJO MACHADO</b> - machado@univap.br UNIVAP
<b>Rodrigo Ferreira Martins</b> -  UNIVAP
<b>Abstract.</b> The reaction of iron combustion is an important chemical process in several engineering applications, yielding iron oxide  and releasing energy. Such reaction is essential for the gas cutting of carbon steel plates, and can occur also in other devices where  the ferrous stuff reaches high temperatures in a high oxygen concentration media. A basic aspect in such processes is to use the heat  generated by the reaction to cut or heat the surface of the material. Usually, oxygen is provided as a gas, through a pre-heating  flame. It was demonstrated that a micrometric droplet stream allows an excellent control of the droplet deposition over a surface. In  this paper the impact of a liquid oxygen droplet jet is studied. The chemical and thermal processes that occur when the droplet jet  impacts  a  steel  flat  plate  are modeled  and  simulated,  and  the  numerical  results  are  compared with  experimental  data  already  available. The objective is to check if the reaction temperature rises over the iron melting temperature, determine the temperature  and iron physical state during the reaction and verify if the reaction is able to sustain itself. Such knowledge would allow to estimate  the possibility of the use of this process in oxi-cutting with some energy savings.
<b>Keywords.</b> oxi-cutting, iron combustion, liquid oxygen.