期刊名称：Current Journal of Applied Science and Technology
印刷版ISSN：2457-1024
出版年度：2021
卷号：40
期号：12
页码：69-80
DOI：10.9734/cjast/2021/v40i1231382
语种：English
出版社：Sciencedomain International
摘要：The thermal behavior of air by natural convection in a confined trapezoidal cavity, one of the walls of which is subjected to a constant heat flow in hot climates, has been analyzed numerically. The heat and mass transfers are carried out by the classical equations of natural convection. These equations are discretized using the Finite Difference Method and the algebraic systems of equations thus obtained are solved with the Thomas and Gauss algorithms. We analyze the influence of the number on the current and isothermal lines as well as the effects of the aspect ratio A = l / H and the angle of inclination φ. In particular, we have shown that convective exchanges in the cavity are preponderant for high Ra numbers. Also we have watches the increase in the values of the isothermal lines and the decrease in the intensity of the streamlines for the low values of A and of the angle φ.
