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Spatial Pointwise Behavior of Time-Periodic Navier–Stokes Flow Induced by Oscillation of a Moving Obstacle

In: Collected Papers in Honor of Yoshihiro Shibata

Author

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  • Toshiaki Hishida

    (Nagoya University, Graduate School of Mathematics)

Abstract

We study the spatial decay of time-periodic Navier–Stokes flow at the rate |x| −1 with/without wake structure in 3D exterior domains when a rigid body moves periodically in time. In this regime the existence of time-periodic solutions was established first in the 2006 paper by Galdi and Silvestre, however, with little information about spatial behavior at infinity so that uniqueness of solutions was not available. This latter issue has been addressed by Galdi, who has recently succeeded in construction of a unique time-periodic solution with spatial behavior mentioned above if translational and angular velocities of the body fulfill, besides smallness and regularity, either of the following assumptions: (i) translation or rotation is absent; (ii) both velocities are parallel to the same constant vector. This paper shows the existence of a unique time-periodic Navier–Stokes flow in the small with values in the weak-L3 space and then deduces the desired pointwise decay of the solution under some condition on the rigid motion of the body, that covers the cases (i), (ii) mentioned above.

Suggested Citation

  • Toshiaki Hishida, 2022. "Spatial Pointwise Behavior of Time-Periodic Navier–Stokes Flow Induced by Oscillation of a Moving Obstacle," Springer Books, in: Tohru Ozawa (ed.), Collected Papers in Honor of Yoshihiro Shibata, pages 369-394, Springer.
    • Handle: RePEc:spr:sprchp:978-3-031-19252-4_16
    DOI: 10.1007/978-3-031-19252-4_16
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