Weak Solutions to the Equations of Stationary Compressible Flows in Active Liquid Crystals

Authors

  • Zhilei Liang
  • Apala Majumdar
  • Dehua Wang
  • Yixuan Wang

DOI:

https://doi.org/10.4208/cmaa.2022-0021

Keywords:

Active liquid crystals, stationary compressible flows, Navier-Stokes equations, Q-tensor, weak solutions, weak convergence.

Abstract

The equations of stationary compressible flows of active liquid crystals are considered in a bounded three-dimensional domain. The system consists of the stationary Navier-Stokes equations coupled with the equation of Q-tensors and the equation of the active particles. The existence of weak solutions to the stationary problem is established through a two-level approximation scheme, compactness estimates and weak convergence arguments. Novel techniques are developed to overcome the difficulties due to the lower regularity of stationary solutions, a Moser-type iteration is used to deal with the strong coupling of active particles and fluids, and some weighted estimates on the energy functions are achieved so that the weak solutions can be constructed for all values of the adiabatic exponent $\gamma>1.$

Published

2024-03-08

Issue

Section

Articles