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Pregled bibliografske jedinice broj: 1132636

Boundary condition enforcement for renormalised weakly compressible meshless Lagrangian methods

Joubert, Johannes C.; Wilke, Daniel N.; Govender, Nicolin; Pizette, Patrick; Bašić, Josip; Abriak, Nor-Edine
Boundary condition enforcement for renormalised weakly compressible meshless Lagrangian methods // Engineering Analysis with Boundary Elements, 130 (2021), 332-351 doi:10.1016/j.enganabound.2021.04.024 (međunarodna recenzija, članak, znanstveni)

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Naslov
Boundary condition enforcement for renormalised weakly compressible meshless Lagrangian methods

Autori
Joubert, Johannes C. ; Wilke, Daniel N. ; Govender, Nicolin ; Pizette, Patrick ; Bašić, Josip ; Abriak, Nor-Edine

Izvornik
Engineering Analysis with Boundary Elements (0955-7997) 130 (2021); 332-351

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Smoothed particle hydrodynamics (SPH) ; General finite difference (GFD) ; Meshless lagrangian method (MLM) ; Weakly compressible ; Boundary conditions ; Free surface

Sažetak
This paper introduces a boundary condition scheme for weakly compressible (WC) renormalised first- order accurate meshless Lagrangian methods (MLM) by considering both solid and free surface conditions. A hybrid meshless Lagrangian method- finite difference (MLM-FD) scheme on prescribed boundary nodes is proposed to enforce Neumann boundary conditions. This is used to enforce symmetry boundary conditions and the implied Neumann pressure boundary conditions on solid boundaries in a manner consistent with the Navier- Stokes equation leading to the accurate recovery of surface pressures. The free surface boundary conditions allow all differential operators to be approximated by the same renormalised scheme while also efficiently determining free surface particles. The boundary conditions schemes are implemented for two renormalised MLMs. A WC smoothed particle hydrodynamics (SPH) solver is compared to a WC generalised finite difference (GFD) solver. Applications in both 2D and 3D are explored. A substantial performance benefit was found when comparing the WCGFD solver to the WCSPH solver with the WCGFD solver realising a maximum speedup in the range of three times over WCSPH in both 2D and 3D configurations. The solvers were implemented in C++ and used the NVIDIA CUDA 10.1 toolkit for the parallelisation of the solvers.

Izvorni jezik
Engleski

Znanstvena područja
Brodogradnja, Računarstvo, Strojarstvo, Temeljne tehničke znanosti, Interdisciplinarne tehničke znanosti



POVEZANOST RADA

Ustanove:
Fakultet elektrotehnike, strojarstva i brodogradnje, Split

Profili:

Avatar Url Josip Bašić (autor)

Poveznice na cjeloviti tekst rada:

doi

Citiraj ovu publikaciju:

Joubert, Johannes C.; Wilke, Daniel N.; Govender, Nicolin; Pizette, Patrick; Bašić, Josip; Abriak, Nor-Edine
Boundary condition enforcement for renormalised weakly compressible meshless Lagrangian methods // Engineering Analysis with Boundary Elements, 130 (2021), 332-351 doi:10.1016/j.enganabound.2021.04.024 (međunarodna recenzija, članak, znanstveni)
Joubert, J., Wilke, D., Govender, N., Pizette, P., Bašić, J. & Abriak, N. (2021) Boundary condition enforcement for renormalised weakly compressible meshless Lagrangian methods. Engineering Analysis with Boundary Elements, 130, 332-351 doi:10.1016/j.enganabound.2021.04.024.
@article{article, author = {Joubert, Johannes C. and Wilke, Daniel N. and Govender, Nicolin and Pizette, Patrick and Ba\v{s}i\'{c}, Josip and Abriak, Nor-Edine}, year = {2021}, pages = {332-351}, DOI = {10.1016/j.enganabound.2021.04.024}, keywords = {Smoothed particle hydrodynamics (SPH), General finite difference (GFD), Meshless lagrangian method (MLM), Weakly compressible, Boundary conditions, Free surface}, journal = {Engineering Analysis with Boundary Elements}, doi = {10.1016/j.enganabound.2021.04.024}, volume = {130}, issn = {0955-7997}, title = {Boundary condition enforcement for renormalised weakly compressible meshless Lagrangian methods}, keyword = {Smoothed particle hydrodynamics (SPH), General finite difference (GFD), Meshless lagrangian method (MLM), Weakly compressible, Boundary conditions, Free surface} }
@article{article, author = {Joubert, Johannes C. and Wilke, Daniel N. and Govender, Nicolin and Pizette, Patrick and Ba\v{s}i\'{c}, Josip and Abriak, Nor-Edine}, year = {2021}, pages = {332-351}, DOI = {10.1016/j.enganabound.2021.04.024}, keywords = {Smoothed particle hydrodynamics (SPH), General finite difference (GFD), Meshless lagrangian method (MLM), Weakly compressible, Boundary conditions, Free surface}, journal = {Engineering Analysis with Boundary Elements}, doi = {10.1016/j.enganabound.2021.04.024}, volume = {130}, issn = {0955-7997}, title = {Boundary condition enforcement for renormalised weakly compressible meshless Lagrangian methods}, keyword = {Smoothed particle hydrodynamics (SPH), General finite difference (GFD), Meshless lagrangian method (MLM), Weakly compressible, Boundary conditions, Free surface} }

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

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