• Two-dimensional simulation of a buoyant blob.
• Computed with the "primitive" equations, meaning a pressure field is calculated that keeps the flow non-divergent. The isobars of the pressure fluctuation are shown as white contours in the second pass through the animation.
• Inviscid. Third-order upwind advection.
• Computation with Python and numpy.
• 801×801 grid points
• Lots to talk about here, for example: Though vorticity dynamics is not explicitly included in the model, vorticity dynamics is obeyed. All vorticity is associated with a gradient of buoyancy.