Pregled bibliografske jedinice broj: 1113430
Verification and validation of a finite volume immersed boundary method for the simulation of static and moving geometries
Verification and validation of a finite volume immersed boundary method for the simulation of static and moving geometries // Journal of non-newtonian fluid mechanics, 290 (2021), 104510, 12 doi:10.1016/j.jnnfm.2021.104510 (međunarodna recenzija, članak, znanstveni)
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Naslov
Verification and validation of a finite volume
immersed boundary method for the simulation of
static and moving geometries
Autori
Kettemann, Jochen ; Gatin, Inno ; Bonten, Christian
Izvornik
Journal of non-newtonian fluid mechanics (0377-0257) 290
(2021);
104510, 12
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
Cell cutting ; Finite volume method ; Immersed boundary method ; Open-source ; OpenFOAM ; Experimental validation ; Verification
Sažetak
This study reports the verification and first experimental validation of an advanced cut-cell finite volume immersed boundary method (IBM). This novel IBM approach was developed by Jasak at the University of Zagreb and released under the name Immersed Boundary Surface Method (IBS). It is implemented and publicly available within the open-source computational fluid dynamics framework foam-extend. In IBS, a temporarily immersed boundary patch is introduced into the cut-cell, resulting in a grid that is virtually boundary-fitted. This allows the simulation of any complex static or moving geometry on an unstructured (collocated) computational mesh without interpolation or simplification in the vicinity of the immersed boundary. In this study, two benchmark simulations were performed to assess the accuracy of the method and validate its implementation for laminar flows of both, Newtonian and non-Newtonian fluids. On the one hand, an extrusion die was used to compare the results of IBS with those of boundary-fitted (BF) simulations with respect to different viscosity models. On the other hand, IBS was validated experimentally with a modified rheometer set-up. Compared to BF simulations, the results of IBS are in very good agreement for both Newtonian fluids and non-Newtonian fluids. Furthermore, with respect to experimental measurements, IBS reproduces the measured torques very well and is therefore able to reproduce physical problems realistically. With these results IBS is verified and also experimentally validated for the first time.
Izvorni jezik
Engleski
Znanstvena područja
Strojarstvo
Citiraj ovu publikaciju:
Časopis indeksira:
- Current Contents Connect (CCC)
- Web of Science Core Collection (WoSCC)
- Science Citation Index Expanded (SCI-EXP)
- SCI-EXP, SSCI i/ili A&HCI
- Scopus
