Existence of weak solutions in wasserstein space for a chemotaxis model coupled to fluid equations

Kyungkeun Kang, Hwa Kil Kim

Research output: Contribution to journalArticle


We consider a coupled system of Keller-Segel-type equations and the incompressible Navier-Stokes equations in spatial dimension two and three. We first establish the existence of a weak solution of a Fokker-Plank equation in the Wasserstein space under the assumption that initial mass is integrable and has finite entropy. As a result, we construct solutions of Keller-Segel-Navier-Stokes equations such that the density of biological organism belongs to the absolutely continuous curves in the Wasserstein space, in the case that its initial mass is assumed to be bounded and integrable.

Original languageEnglish
Pages (from-to)2965-3004
Number of pages40
JournalSIAM Journal on Mathematical Analysis
Issue number4
Publication statusPublished - 2017 Jan 1


All Science Journal Classification (ASJC) codes

  • Analysis
  • Computational Mathematics
  • Applied Mathematics

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