Seminar Analysis and Theoretical Physics

Talk on Tuesday, May 7, 2024, at 3 p.m., room c311, main building of the university; Prof. Dr. Jürgen Saal, Heinrich-Heine-Universität Düsseldorf; Existence of a Global Attractor for Living Fluids

Existence of a Global Attractor for Living Fluids

Self-sustained turbulent motion in microbiological suspensions present an intriguing example of collective dynamical behavior among the simplest forms of life and is important for fluid mixing and molecular transport on the microscale. This type so-called active or living fluids display turbulent behavior at low Reynolds regimes, a phenomenon that cannot be captured by classical fluid models. In a paper of Wensink et. al. a generalized Version of the Navier-Stokes equations is proposed to describe this so-called 'active turbulence'. The purpose of the talk is to analyze the active turbulence from an analytical point of view. We will discuss (in-) stability of relevant equilibria and prove the existence of a global attractor.