FLOWS ALONG A NON ISOTHERM VERTICAL WALL, IN A CAVITY - THERMAL STUDIES WITH A LARGE RAYLEIGH NUMBER

In a 2.5 m wide cubic cavity, we partly study the natural convection a long a non isotherm vertical wall. This wall is made of three stripes which can be heated differently. For four thermal configurations, we d raw the thermal curves near the active wall by an experimental method, and we compare them to those got by the integral method of Karman-Pol hausen. The comparrson is good even for particular curves. We suggest, for each configuration, a connection between the numbers of Nusselt a nd Rayleigh. We also notice that the air stratification is little affe cted in the middle of the cavity for any configuration.