{
  "id": "2202.11476",
  "version": "v1",
  "published": "2022-02-23T12:55:13.000Z",
  "updated": "2022-02-23T12:55:13.000Z",
  "title": "Comparing the convected level-set and the Allen-Cahn phase-field methods in AMR/C simulations of two-phase flows",
  "authors": [
    "Malú Grave",
    "Alvaro L. G. A. Coutinho"
  ],
  "comment": "26 pages, 21 figures",
  "categories": [
    "physics.flu-dyn"
  ],
  "abstract": "The modeling and simulation of two-phase flows is still an active research area, mainly when surface tension is present. One way to model the different phases is with interface capturing methods. Two well-established interface capturing approaches are the level-set and phase-field methods. The level-set method is known for its ability to compute the surface tension accurately, and phase-field models satisfy the second law of thermodynamics. This paper reviews and compares a level-set and a phase-field approach to simulate two-phase flows. We use a modified level-set method, called convected level-set. The difference to the standard level-set method is that the re-initialization step is embedded in the convection equation, avoiding a separate step during the calculation. We also apply a global mass conservation procedure to enforce the mass balance between phases. On the other hand, the phase-field approach uses a conservative Allen-Cahn equation with a Lagrange multiplier to conserve the mass. The methods are implemented in libMesh, a parallel adaptive finite element library, using the same finite element formulations, time-marching schemes, solvers, and mesh adaptivity strategies. We present numerical solutions for the two methods considering adaptive mesh refinement and coarsening (AMR/C). Results are analyzed and discussed.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2022-02-23T12:55:13.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "two-phase flows",
      "allen-cahn phase-field methods",
      "convected level-set",
      "amr/c simulations",
      "adaptive finite element library"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 26,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}