### Abstract

The basic model for incompressible two-phase flows with phase transitions is derived from basic principles and shown to be thermodynamically consistent in the sense that the total energy is conserved and the total entropy is nondecreasing. The local well-posedness of such problems is proved by means of the technique of maximal L_{p}-regularity in the case of equal densities. This way we obtain a local semiflow on a well-defined nonlinear state manifold. The equilibria of the system in absence of external forces are identified and it is shown that the negative total entropy is a strict Ljapunov functional for the system. If a solution does not develop singularities, it is proved that it exists globally in time, its orbit is relatively compact, and its limit set is nonempty and contained in the set of equilibria.

Original language | English |
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Pages (from-to) | 171-194 |

Number of pages | 24 |

Journal | Evolution Equations and Control Theory |

Volume | 1 |

Issue number | 1 |

DOIs | |

Publication status | Published - 2012 Jan 1 |

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### Keywords

- Entropy
- Phase transitions
- Surface tension
- Time weights
- Two-phase Navier-Stokes equations
- Well-posedness

### ASJC Scopus subject areas

- Modelling and Simulation
- Control and Optimization
- Applied Mathematics

### Cite this

*Evolution Equations and Control Theory*,

*1*(1), 171-194. https://doi.org/10.3934/eect.2012.1.171