<div class="csl-bib-body">
<div class="csl-entry">De Paoli, M. (2025, April 8). <i>AFiD-Darcy: A finite difference solver for numerical simulations of convective porous media flows</i> [Presentation]. Computer Physics Communications Seminar Series 2025, online, Austria. https://doi.org/10.52843/cassyni.rpc0xk</div>
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/224268
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dc.description.abstract
We present an efficient solver for massively-parallel simulations of convective, wall-bounded and incompressible porous media flows. The algorithm consists of a second-order finite-difference pressure-correction scheme, allowing the use of an efficient FFT-based solver in problems with different boundary conditions. The parallelization method is implemented in a two-dimensional pencil-like domain decomposition, which enables efficient parallel large-scale simulations. The original version of the code presented by van der Poel et al. [Comput. Fluids, 116, 10-16 (2015)] has been modified to solve the Darcy equation for the momentum transport, representative of porous media flows driven by buoyancy. Two schemes are implemented to treat the diffusive term of the advection-diffusion equation, namely a fully implicit and semi-implicit formulation. Despite exhibiting a higher computational cost per time step, the fully implicit scheme allows an efficient simulation of transient flows, leading to a smaller time-to-solution compared to the semi-implicit scheme. The implementation was verified against different canonical flows, and the computational performance was examined. To show the code's capabilities, the maximal driving strength explored has been doubled as compared to state-of-art simulations, corresponding to an increase of the associated computational effort of about 8 to 16 times. Excellent strong scaling performance is demonstrated for both schemes developed and for domains with more than 10^10 spatial degrees of freedom.
en
dc.language.iso
en
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dc.subject
Finite-difference scheme
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dc.subject
Convection
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dc.subject
Porous media
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dc.subject
Parallelization
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dc.title
AFiD-Darcy: A finite difference solver for numerical simulations of convective porous media flows
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dc.type
Presentation
en
dc.type
Vortrag
de
dc.type.category
Presentation
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tuw.publication.invited
invited
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tuw.researchTopic.id
C2
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tuw.researchTopic.name
Computational Fluid Dynamics
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tuw.researchTopic.value
100
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tuw.linking
https://github.com/depaolimarco/AFiD-Darcy
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tuw.publication.orgunit
E322-01 - Forschungsbereich Strömungsmechanik
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tuw.publisher.doi
10.52843/cassyni.rpc0xk
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tuw.author.orcid
0000-0002-4709-4185
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tuw.event.name
Computer Physics Communications Seminar Series 2025
