Simulations of stably stratified flow past two spheres at Re = 300

Flows past two spheres immersed in a horizontally moving, linearly stratified fluid are investigated at moderate Reynolds number of 300. Characterization flow patterns considers representative geometrical configurations defined by varying both the distance between and their relative orientation to free stream direction. Simulations performed on unstructured meshes chosen accurately resolve dynamics fluids regions close for Froude numbers Fr∈[0.25,∞]. Results illustrate evolution boundary layers, separation, wakes interaction under influence gravity induced buoyancy force. Computations utilize limited area, nonhydrostatic model employing non-oscillatory forward-in-time integration based multidimensional positive definite advection transport algorithm. The solves Navier–Stokes equations incompressible Boussinnesq limit, suitable describing range mesoscale atmospheric flows. demonstrate that stratification progressively dominates as decreases interactions spheres' bear resemblance flows hills.