corrections
This commit is contained in:
		| @@ -23,6 +23,7 @@ | ||||
| % comment if not needed | ||||
| \usepackage[hyphens]{url} | ||||
| \usepackage{hyperref} | ||||
| \usepackage{color} | ||||
|  | ||||
|  | ||||
| % TITLE: replace text with your abstract title WITHOUT full stop | ||||
| @@ -100,27 +101,24 @@ Several works have been reported dealing with numerical solutions of the iNSE in | ||||
|  | ||||
| Different choices of time discretization schemes have been reported e.g. \cite{Basting2017, Hessenthaler2017}, nevertheless to the best of the authors knowledge, only a few monolithic schemes have been throughly analyzed, e.g. \cite{Lozovskiy2018, smaldone2014, le-tallec-mouro-01, Burtschell2017} while no analysis has been reported for Chorin-Temam (CT) schemes, being a feasible alternative when requirements such a low time computations are needed. | ||||
|  | ||||
| The goal of this talk is to present the finding of well-posedness and unconditional energy balance of the iNSE-ALE for several reported CT discretization schemes within a single formulation, published in \cite{arostica2021monolithic}. The main result will be that under appropiate conditions on the rate of domain deformation, a first order time discretization scheme for the CT scheme is unconditionally stable.  | ||||
| The goal of this talk is to present the finding of well-posedness and unconditional energy balance of the iNSE-ALE for several reported monolithic discretization schemes within a single formulation, recently published in \cite{arostica2021monolithic}. The main result is that under appropriate conditions on the rate of domain deformation, only some of first order time discretization schemes are unconditionally stable.  | ||||
|  | ||||
| Explicitly, we will show that under certain conditions, our CT scheme is unconditionally energy stable, through the inequality: | ||||
| We will show the extension to a CT scheme. Namely, in that case the following inequality can be shown: | ||||
| \begin{equation} | ||||
| \int_{\Omega^0} \frac{\rho J^{n+1}}{2\tau} \vert \tilde{\mathbf{u}}^{n+1} \vert^2 \, \text{d}\mathbf{X} -\int_{\Omega^0} \frac{\rho J^{n}}{2\tau} \vert \tilde{\mathbf{u}}^{n} \vert^2 \, \text{d}\mathbf{X} \leq - \int_{\Omega^0} J^{\star} 2 \mu \vert \epsilon^{\star} (\tilde{\mathbf{u}}) \vert^2 \, \text{d}\mathbf{X} - \int_{\Omega^0} \frac{\tau J^n}{2 \rho} \vert Grad(p^n) H^n \vert^2 \, \text{d} \mathbf{X} | ||||
| \end{equation} | ||||
|  | ||||
| for $(\mathbf{u}^n, p^n)$ the velocity/pressure pair solution at time $t^n$, in the reference domain $\Omega^0$, for operators to be specified in the talk.  | ||||
|  | ||||
| Our finding will be supplemented with an application case of fluid-solid interactions problem in an idealize geometry, exploiting the splitting nature of the CT scheme with a well-known coupling approach \cite{bertoglio2013sisc}.  | ||||
|  | ||||
| In such a case, we will exploit the fluid pressure projection step, coupling it with the solid problem in an efficient fashion. Simulations of such a case will be provided, as well as the current research done in more realistic geometries. | ||||
|  | ||||
| Our finding will be supplemented with an application to fluid-solid interaction in an idealized cardiac geometry, exploiting the splitting nature of the CT scheme with a well-known coupling approach \cite{bertoglio2013sisc}. \textcolor{red}{cita el paper original de fernandez, gerbau y grandmont porfa} | ||||
| %In such a case, we will exploit the fluid pressure projection step, coupling it with the solid problem in an efficient fashion. Simulations of such a case will be provided, as well as the current research done in more realistic geometries. | ||||
| \begin{figure}[!hbtp] | ||||
| 	\centering | ||||
| 	\includegraphics[width=0.8\textwidth]{figs/comparison_two_ways_to_one_way.png} | ||||
| 	\caption{Comparison one-way (left) to two-ways (right) approach, with $\mathbb{P}_1$ lagrange elements. In arrows the fluid magnitude and direction, while it's surrounds denote the solid effects.} | ||||
| 	\caption{Comparison one-way (left) to two-ways (right) approach \textcolor{red}{no deberia ser al reves?}, with $\mathbb{P}_1$ lagrange elements. In arrows the fluid magnitude and direction, driven by an hyperelastic solid actively contracting (grey, with decreased opacity).} | ||||
| 	\label{fig:comparison_figure} | ||||
| \end{figure} | ||||
|  | ||||
| \newpage | ||||
| %\newpage | ||||
|  | ||||
|  | ||||
| \bibliography{biblio_merged.bib} | ||||
|   | ||||
		Reference in New Issue
	
	Block a user