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On the C₀ semigroup generated by the Oseen operator around a steady flow exterior to a rotating obstacle
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On the C₀ semigroup generated by the Oseen operator around a steady flow exterior to a rotating obstacle
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We consider the motion of an incompressible viscous fluid filling the whole space exterior to a moving with rotation and translation obstacle. We show that the Stokes operator around the steady flow in the exterior of this obstacle generates a $C_0$-semigroup in $L^p$ space and then develop a series of $L^p$-$L^q$ estimates of such semigroup. As an application, we give out the stability of such steady flow when the initial disturbance in $L^3$ and the steady flow are sufficiently small.
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