@Article{IJNAM-4-3-4,
author = {},
title = {Numerical Analysis of a Higher Order Time Relaxation Model of Fluids},
journal = {International Journal of Numerical Analysis and Modeling},
year = {2007},
volume = {4},
number = {3-4},
pages = {648--670},
abstract = {<p style="text-align: justify;">We study the numerical errors in finite elements
discretizations of a time relaxation model of fluid motion:<br/>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; $u_t + u\cdot \nabla u + \nabla p - \nu\Delta u + \chi u^* = f$ and $\nabla \cdot u = 0$<br/>In this model, introduced by Stolz, Adams, and Kleiser, $u^*$ is a
generalized fluctuation and $\chi$ the time relaxation parameter. The goal
of inclusion of the $\chi u^*$ is to drive unresolved fluctuations to zero
exponentially. We study convergence of discretization of model to the
model&#39;s solution as $h$, $\Delta t \rightarrow 0$. Next we complement this with an
experimental study of the effect the time relaxation term (and a
nonlinear extension of it) has on the large scales of a flow near a
transitional point. We close by showing that the time relaxation term
does not alter shock speeds in the inviscid, compressible case, giving
analytical confirmation of a result of Stolz, Adams, and Kleiser.</p>},
issn = {2617-8710},
doi = {https://doi.org/2007-IJNAM-882},
url = {https://global-sci.com/article/83800/numerical-analysis-of-a-higher-order-time-relaxation-model-of-fluids}
}