Natural Convection in a Differentially Heated Square Enclosure with a Solid Polygon

Figure 5

Streamlines (left), isotherms (middle), and heatlines (right) evolutions by varying thermal conductivity ratio for 𝑁=5, 𝑋₀=0.5, 𝐴=𝜋/25, and Ra=10⁵.

(a) 𝐾_𝑟=0.1

(b) 𝐾_𝑟=0.5

(c) 𝐾_𝑟=2.0

(d) 𝐾_𝑟=10.0