Data assimilation finite element method for the linearized Navier–Stokes equations in the low Reynolds regime

Data assimilation finite element method for the linearized Navier–Stokes equations in the low Reynolds regime
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低雷诺状态下线性纳维-斯托克斯方程的数据同化有限元法

DOI:
10.1088/1361-6420/ab9161
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发表时间:
2020
期刊:
影响因子:
2.1
通讯作者:
Colette Voisembert
Colette Voisembert
中科院分区:
数学2区
文献类型:
--
作者:
M. Boulakia;E. Burman;M. Fernández;Colette Voisembert

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本文设计和分析了一种适用于线性化不可压Navier-Stokes方程描述的定常层流的有限元数据同化方法。我们提出了一个弱一致的稳定有限元方法,重建整个流体流动的噪声速度测量的一个子集的计算域。利用三球不等式形式的连续问题的稳定性,我们得到了速度的定量局部误差估计。数值模拟说明了这些收敛特性,我们最后将我们的方法应用到血管中的流动重建。
In this paper, we are interested in designing and analyzing a finite element data assimilation method for laminar steady flow described by the linearized incompressible Navier–Stokes equation. We propose a weakly consistent stabilized finite element method which reconstructs the whole fluid flow from noisy velocity measurements in a subset of the computational domain. Using the stability of the continuous problem in the form of a three balls inequality, we derive quantitative local error estimates for the velocity. Numerical simulations illustrate these convergence properties and we finally apply our method to the flow reconstruction in a blood vessel.
DOI: 10.1016/j.matpur.2018.10.003
发表时间: 2017-10
期刊: Journal de Mathématiques Pures et Appliquées
影响因子: --
作者:
E. Burman;Mihai Nechita;L. Oksanen
通讯作者: E. Burman;Mihai Nechita;L. Oksanen
DOI: 10.1051/m2an/2018030
发表时间: 2017-07
期刊: ESAIM: Mathematical Modelling and Numerical Analysis
影响因子: --
作者:
E. Burman;J. Ish-Horowicz;L. Oksanen
通讯作者: E. Burman;J. Ish-Horowicz;L. Oksanen