Parallel simulation of multiphase flows using octree adaptivity and the volume-of-fluid method
Résumé
We describe computations performed using the Gerris code, an open-source software implementing finite volume
solvers on an octree adaptive grid together with a piecewise linear volume of fluid interface tracking method. The
parallelisation of Gerris is achieved by domain decomposition. We show examples of the capabilities of Gerris on
several types of problems. The impact of a droplet on a layer of the same liquid results in the formation of a thin
air layer trapped between the droplet and the liquid layer that the adaptive refinement allows to capture. It is
followed by the jetting of a thin corolla emerging from below the impacting droplet. The jet atomization problem
is another extremely challenging computational problem, in which a large number of small scales are generated.
Finally we show an example of a turbulent jet computation in an equivalent resolution of 6 × 10243 cells. The
jet simulation is based on the configuration of the Deepwater Horizon oil leak
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