EPJ Web of Conferences
Volume 45, 2013EFM12 – Experimental Fluid Mechanics 2012
|Number of page(s)||9|
|Published online||09 April 2013|
Numerical Simulation of the Flow Around Diffusible Barriers
Výzkumný a Zkušební. Letecký Ústav, VZLÚ, Beranových 130, 199 05 Praha – Letňany, Czech Republic
We work with the system of equations describing the non-stationary compressible fluid flow, and we focus on the numerical solution of these equations, and on the boundary conditions. In order to construct the boundary conditions we analyze the equations in the close vicinity of the boundary. Many boundary conditions (i.e. fixed, linearized) do not solve the local problem in an appropriate way, which may bring non-physical errors into the solution, slow down the convergent process, or even ruin the solution in the whole domain. We use the analysis of the exact solution of the Riemann problem in order to solve this local boundary problem. In the case of the diffusible barrier we solve the modified Riemann problem, with the one-side initial condition, complemented with the Darcy's law and added inertial loss.We analyze the solution of this problem.We show the computational results of the flow through the diffusible barrier, obtained with the own-developed code for the solution of the compressible gas flow.
© Owned by the authors, published by EDP Sciences, 2013
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 2.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.