TY - GEN
T1 - Large scale lattice Boltzmann simulation for the coupling of free and porous media flow
AU - Fattahi, Ehsan
AU - Waluga, Christian
AU - Wohlmuth, Barbara
AU - Rüde, Ulrich
N1 - Publisher Copyright:
© Springer International Publishing Switzerland 2016.
PY - 2016
Y1 - 2016
N2 - In this work, we investigate the interaction of free and porous media flow by large scale lattice Boltzmann simulations. We study the transport phenomena at the porous interface on multiple scales, i.e., we consider both, computationally generated pore-scale geometries and homogenized models at a macroscopic scale. The pore-scale results are compared to those obtained by using different transmission models. Twodomain approaches with sharp interface conditions, e.g., of Beavers–Joseph–Saffman type, as well as a single-domain approach with a porosity depending viscosity are taken into account. For the pore-scale simulations, we use a highly scalable scheme with a robust second order boundary handling. We comment on computational aspects of the porescale simulation and on how to generate pore-scale geometries. The twodomain approaches depend sensitively on the choice of the exact position of the interface, whereas a well-designed single-domain approach can lead to a significantly better recovery of the averaged pore-scale results.
AB - In this work, we investigate the interaction of free and porous media flow by large scale lattice Boltzmann simulations. We study the transport phenomena at the porous interface on multiple scales, i.e., we consider both, computationally generated pore-scale geometries and homogenized models at a macroscopic scale. The pore-scale results are compared to those obtained by using different transmission models. Twodomain approaches with sharp interface conditions, e.g., of Beavers–Joseph–Saffman type, as well as a single-domain approach with a porosity depending viscosity are taken into account. For the pore-scale simulations, we use a highly scalable scheme with a robust second order boundary handling. We comment on computational aspects of the porescale simulation and on how to generate pore-scale geometries. The twodomain approaches depend sensitively on the choice of the exact position of the interface, whereas a well-designed single-domain approach can lead to a significantly better recovery of the averaged pore-scale results.
KW - Darcy Navier-stokes coupling
KW - Interface conditions
KW - Lattice Boltzmann method
KW - Pore-scale simulation
KW - Two domain approach
UR - http://www.scopus.com/inward/record.url?scp=85032069767&partnerID=8YFLogxK
U2 - 10.1007/978-3-319-40361-8_1
DO - 10.1007/978-3-319-40361-8_1
M3 - Conference contribution
AN - SCOPUS:85032069767
SN - 9783319403601
T3 - Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
SP - 1
EP - 18
BT - High Performance Computing in Science and Engineering - 2nd International Conference, HPCSE 2015, Revised Selected Papers
A2 - Čermák, Martin
A2 - Rozložník, Miroslav
A2 - Šístek, Jakub
A2 - Kozubek, Tomáš
A2 - Blaheta, Radim
PB - Springer Verlag
T2 - 2nd International Conference on High Performance Computing in Science and Engineering, HPCSE 2015
Y2 - 25 May 2015 through 28 May 2015
ER -