$L^q$-approach to weak solutions of the Oseen flow around a rotating body
$L^q$-approach to weak solutions of the Oseen flow around a rotating body
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$L^q$-围绕旋转体的 Oseen 流弱解的方法
DOI:
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发表时间:
2008
期刊:
影响因子:
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通讯作者:
P. Penel
中科院分区:
文献类型:
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作者:
S. Kracmar;Š. Nečasová;P. Penel
. We consider the time-periodic Oseen flow around a rotating body in R 3 . We prove a priori estimates in L q -spaces of weak solutions for the whole space problem under the assumption that the right-hand side has the divergence form. After a time-dependent change of coordinates the problem is reduced to a stationary Oseen equation with the additional term − ( ω ∧ x ) · ∇ u + ω ∧ u in the equation of momentum where ω denotes the angular velocity. We prove the existence of generalized weak solutions in L q -space using Littlewood-Paley decomposition and maximal operators.