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Original title:
Connecting immersed boundary method with heat transfer for simulations of mechanical metamaterials
Authors: Kubíčková, Lucie ; Isoz, Martin
Document type: Papers
Conference/Event: Topical Problems of Fluid Mechanics 2026, Praha (CZ), 20260218
Year: 2026
Language: eng
Abstract: In the energy or foundry industry, mechanical metamaterials have become increasingly popular since they can be designed to have unique heat transfer properties. These properties are granted by the metamaterial inner structure, which can be further optimized for a specific application. In this contribution, we present a numerical solver usable for such optimization. To allow for an easy change of the metamaterial inner structure, the solver is based on our custom variant of the immersed boundary method. The solver also accounts for turbulent flow via Reynolds-averaged simulation approach and includes equations for heat transfer. First, to assess the solver, a series of simple benchmark cases was prepared to study its sensitivity to the flow Reynolds number and to compare the results with standard OpenFOAM solvers. Then, an exemplary metamaterial simulation was prepared to test the solver capabilities in more realistic scenarios, mainly evaluating the effect of mesh resolution and the amount of material bulk. The latter tests showed that the solver does not have particular problems with computations of the flow fields. For the temperature field, the differences to standard solvers are bigger, but the trends in heat transfer properties are kept well.
Keywords: heat transfer; immersed boundary method; mechanical metamateria
Project no.: EH23_020/0008501
Funding provider: GA MŠk
Host item entry: Topical problem of Fluid Mechanics 2026, ISBN 978-80-87012-92-5, ISSN 2336-5781
Note: Související webová stránka: https://tpfm.it.cas.cz/im/im/proceeding/2026/18
Institution: Institute of Thermomechanics AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: https://hdl.handle.net/11104/0378949
Permalink: http://www.nusl.cz/ntk/nusl-772423
The record appears in these collections:
Research > Institutes ASCR > Institute of Thermomechanics
Conference materials > Papers
Authors: Kubíčková, Lucie ; Isoz, Martin
Document type: Papers
Conference/Event: Topical Problems of Fluid Mechanics 2026, Praha (CZ), 20260218
Year: 2026
Language: eng
Abstract: In the energy or foundry industry, mechanical metamaterials have become increasingly popular since they can be designed to have unique heat transfer properties. These properties are granted by the metamaterial inner structure, which can be further optimized for a specific application. In this contribution, we present a numerical solver usable for such optimization. To allow for an easy change of the metamaterial inner structure, the solver is based on our custom variant of the immersed boundary method. The solver also accounts for turbulent flow via Reynolds-averaged simulation approach and includes equations for heat transfer. First, to assess the solver, a series of simple benchmark cases was prepared to study its sensitivity to the flow Reynolds number and to compare the results with standard OpenFOAM solvers. Then, an exemplary metamaterial simulation was prepared to test the solver capabilities in more realistic scenarios, mainly evaluating the effect of mesh resolution and the amount of material bulk. The latter tests showed that the solver does not have particular problems with computations of the flow fields. For the temperature field, the differences to standard solvers are bigger, but the trends in heat transfer properties are kept well.
Keywords: heat transfer; immersed boundary method; mechanical metamateria
Project no.: EH23_020/0008501
Funding provider: GA MŠk
Host item entry: Topical problem of Fluid Mechanics 2026, ISBN 978-80-87012-92-5, ISSN 2336-5781
Note: Související webová stránka: https://tpfm.it.cas.cz/im/im/proceeding/2026/18
Institution: Institute of Thermomechanics AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: https://hdl.handle.net/11104/0378949
Permalink: http://www.nusl.cz/ntk/nusl-772423
The record appears in these collections:
Research > Institutes ASCR > Institute of Thermomechanics
Conference materials > Papers
Record created 2026-05-31, last modified 2026-05-31