We present two dimensional numerical simulations of a natural convection problem in an unbounded domain. A thermal stratification is applied in the vertical direction and the flow circulation is induced by a heat island located on the ground. For this problem, thermal perturbations are convected in the horizontal direction far from the heated element so… (More)
Figure 8: Convergence history of maxi,j |θn+1i,j −θ n i,j | δt for the standard (solid line) and the truncated (dotted line) heat equation at Ra = 105. The vertical resolution is h = 1/32, the time step is δt = 0.1 and the computational domain is Ω = (−240, 240)× (0, 4).