• Media type: Text; Report; E-Book
  • Title: Weak solutions and weak-strong uniqueness for a thermodynamically consistent phase-field model
  • Contributor: Lasarzik, Robert [Author]; Rocca, Elisabetta [Author]; Schimperna, Giulio [Author]
  • Published: Weierstrass Institute for Applied Analysis and Stochastics publication server, 2019
  • Language: English
  • DOI: https://doi.org/10.20347/WIAS.PREPRINT.2608
  • Keywords: 35D35 ; 80A22 ; 35D30 ; Existence of weak solutions -- weak-strong uniqueness -- phase transition -- local solutions ; article
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  • Description: In this paper we prove the existence of weak solutions for a thermodynamically consistent phase-field model introduced in [26] in two and three dimensions of space. We use a notion of solution inspired by [18], where the pointwise internal energy balance is replaced by the total energy inequality complemented with a weak form of the entropy inequality. Moreover, we prove existence of local-in-time strong solutions and, finally, we show weak-strong uniqueness of solutions, meaning that every weak solution coincides with a local strong solution emanating from the same initial data, as long as the latter exists.
  • Access State: Open Access