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Pregled bibliografske jedinice broj: 963011

Časopis

Autori: Krvavica, Nino; Tuhtan, Miran; Jelenić, Gordan
Naslov: Analytical implementation of Roe solver for two-layer shallow water equations with accurate treatment for loss of hyperbolicity
( Analytical implementation of Roe solver for two-layer shallow water equations with accurate treatment for loss of hyperbolicity )
Izvornik: Advances in water resources (0309-1708) 122 (2018), C; 187-205
Vrsta rada: članak
Ključne riječi: shallow-water equation ; quartic ; finite-volume method ; Roe solver ; two-layer flow ; hyperbolicity loss
( shallow-water equation ; quartic ; finite-volume method ; Roe solver ; two-layer flow ; hyperbolicity loss )
Sažetak:
A new implementation of the Roe scheme for solving two-layer shallow-water equations is presented in this paper. The proposed A-Roe scheme is based on the analytical solution to the characteristic quartic of the flux matrix, which is an efficient alternative to a numerical eigensolver. Additionally, an accurate method for maintaining the hyperbolic character of the governing system is proposed. The efficiency of the quartic closed-form solver is examined and compared to numerical eigensolvers. Furthermore, the accuracy and computational speed of the A-Roe scheme is compared to the Roe, Lax-Friedrichs, GFORCE, PVM, and IFCP schemes. Finally, numerical tests are presented to evaluate the efficiency of the iterative treatment for the hyperbolicity loss. The proposed A-Roe scheme is as accurate as the Roe scheme, but much faster, with computational speeds closer to the GFORCE and IFCP scheme.
Izvorni jezik: eng
Rad je indeksiran u
bazama podataka:
Current Contents Connect (CCC)
Scopus
SCI-EXP, SSCI i/ili A&HCI
Science Citation Index Expanded (SCI-EXP) (sastavni dio Web of Science Core Collectiona)
Kategorija: Znanstveni
Znanstvena područja:
Građevinarstvo
Puni text rada: 963011.Krvavica_A-Roe_r2_Arxiv.pdf (tekst priložen 23. Lis. 2018. u 07:43 sati)
URL Internet adrese: https://arxiv.org/abs/1810.11285v2
https://authors.elsevier.com/a/1XxMM16J1mpCQI
https://doi.org/10.1016/j.advwatres.2018.10.017
Broj citata:
Altmetric:
DOI: 10.1016/j.advwatres.2018.10.017
URL cjelovitog teksta:
Google Scholar: Analytical implementation of Roe solver for two-layer shallow water equations with accurate treatment for loss of hyperbolicity
Upisao u CROSBI: Nino Krvavica (nino.krvavica@gradri.uniri.hr), 23. Lis. 2018. u 07:43 sati



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