variavel0=<b>Edgar  Paz Pérez</b> - edgarpape@yahoo.es Universidade Estadual Paulista
<b>Alonso Bernave Aguirre Reto</b> - alonso@feg.unesp.br UNESP:  Facultade de Engenharia Mecânica
<b>Luiz Roberto Carrocci</b> - carrocci@feg.unesp.br UNESP:  Facultade de Engenharia Mecânica
<b>Abstract.</b> The article`s objective is to find the profiles of temperature and speed of a fluid in a given system, the vertex of the space understood between two plates. The system is constituted by a hot vertical plate and a cold horizontal plate, full with a porous media one that contains a fluid that is initially cold and in stationary. For the solution of the problem its leaves of the equations of quantity of movement, of energy and of continuity. carrying out the simplifications and appropriate dimensionless, you arrives to the ruling equations of the phenomenon; these equations are solved by the method of finite differences, through of the application of a program in language Delphi developed specifically for this case.
<b>Keywords.</b> Porous Media, mechanics of fluids, natural Convection, programming, numerical methods.