Rotated-hybrid Riemann solver for all-speed flows

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F23%3A00363895" target="_blank" >RIV/68407700:21220/23:00363895 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1016/j.cam.2023.115129" target="_blank" >https://doi.org/10.1016/j.cam.2023.115129</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.cam.2023.115129" target="_blank" >10.1016/j.cam.2023.115129</a>

Result language
angličtina
Original language name
Rotated-hybrid Riemann solver for all-speed flows
Original language description
The contribution deals with numerical solution of compressible flows modeled by the Euler or the Navier–Stokes equations. Addressed flow regimes range from very low Mach number flows to hypersonic flows. The numerical solution is obtained by the finite volume method based on the rotated-hybrid Riemann solver method, where two different Riemann solvers are used in different directions. The combination of the HLL and the HLLC schemes leads to carbuncle-free numerical method. Both the HLL and the HLLC schemes are further modified for improved accuracy and stability in cases with very low Mach number flows. Second order accuracy in space is achieved by the piecewise linear WENO reconstruction while accuracy in time is maintained by the explicit two-stage TVD Runge–Kutta method. The proposed method is validated on many test cases including solution of subsonic flow over an airfoil with M=0.01 or hypersonic flow past circular cylinder with M=20.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10102 - Applied mathematics

Project
<a href="/en/project/EF16_019%2F0000826" target="_blank" >EF16_019/0000826: Center of Advanced Aerospace Technology</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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