WIAS Preprint No. 2876, (2021)

On the Stokes-type resolvent problem associated with time-periodic flow around a rotating obstacle


  • Eiter, Thomas
    ORCID: 0000-0002-7807-1349

2020 Mathematics Subject Classification

  • 76D07 76U05 47A10 35B10 76D05 35Q30


  • Stokes flow, rotating obstacle, resolvent problem, time-periodic solutions




Consider the resolvent problem associated with the linearized viscous flow around a rotating body. Within a setting of classical Sobolev spaces, this problem is not well posed on the whole imaginary axis. Therefore, a framework of homogeneous Sobolev spaces is introduced where existence of a unique solution can be guaranteed for every purely imaginary resolvent parameter. For this purpose, the problem is reduced to an auxiliary problem, which is studied by means of Fourier analytic tools in a group setting. In the end, uniform resolvent estimates can be derived, which lead to the existence of solutions to the associated time-periodic linear problem.

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