SHAPE HOLOMORPHY OF THE STATIONARY NAVIER-STOKES EQUATIONS
SHAPE HOLOMORPHY OF THE STATIONARY NAVIER-STOKES EQUATIONS
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DOI:
10.1137/16m1099406
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发表时间:
2018-01-01
影响因子:
2
通讯作者:
Zech, Jakob
中科院分区:
文献类型:
--
作者:
Cohen, Albert;Schwab, Christoph;Zech, Jakob
We consider the stationary Stokes and Navier-Stokes equations for viscous, incompressible flow in parameter dependent bounded domains D-T, subject to homogeneous Dirichlet ("no-slip") boundary conditions on partial derivative D-T. Here, D-T is the image of a given fixed reference Lipschitz domain (D) over cap subset of R-d, d is an element of {2, 3}, under a map T : R-d > R-d. We establish shape holomorphy of Leray solutions which is to say, holomorphy of the map T -> ((u) over cap (T), (p) over cap (T)), where ((u) over cap (T), (p) over cap (T)) is an element of H-0(1)((D) over cap)(d) x L-2((D) over cap) denotes the pullback of the corresponding weak solutions in D = T((D) over cap) and T varies in (subsets of) W-k,W-infinity with k is an element of{1, 2}, depending on the type of pullback. We consider, in particular, parametrized families {T-y : y is an element of U} subset of W-1,W-infinity ((D) over cap)(d) of domain mappings with parameter domain U = [-1, 1](N) and with affine dependence of T-y on y. The presently obtained shape holomorphy implies summability results and n-term approximation rate bounds for "generalized polynomial chaos" expansions for the corresponding parametric solution map y -> ((u) over cap (y),(p) over cap (y)) is an element of H-0(1)((D) over cap)(d) x L-2((D) over cap).