SLAU2 applied to two-dimensional, ideal magnetohydrodynamics simulations

• Kitamura, Keiichi

• Mamashita, Tomohiro

• Ryu, Dongsu

抄録

SLAU2 (Simple Low-dissipation Advection-Upstream-splitting-method 2) numerical flux function, one of AUSM-type methods (3-wave solver), originally developed and widely used in gasdynamics, has been applied to two-dimensional magnetohydrodynamics (MHD) simulations. According to numerical tests for a wide range of flow and magnetic conditions, its reliability, efficiency, and accuracy have been demonstrated: i) Robustness of SLAU2 against shock-anomalies (e.g., carbuncle phenomena) has been confirmed in the MHD-extended version of our hypersonic flow test; ii) The computational cost has been reduced for approximately 3% compared with HLLD (Harten-Lax-van_Leer with Discontinuities), a more expensive, 5-wave solver; iii) Nevertheless, its solution qualities are almost equal to those of HLLD, as opposed to very diffused HLL solutions. For benchmark tests, detailed and important flow physics such as multidimensional shock/shock interactions have been successfully reproduced by SLAU2. We hope that SLAU2 will contribute to further progress of the astrophysics and other research fields.

収録刊行物

• Computers & Fluids

  Computers & Fluids 209 104635-, 2020-09-15

  Elsevier

キーワード

• SLAU2
• MHD
• Euler Fluxes

詳細情報

• CRID: 1050848650249268736
• NII論文ID: 120006885192
• NII書誌ID: AA00613559
• ISSN: 00457930
• DOI: 10.1016/j.compfluid.2020.104635
• Web Site: http://hdl.handle.net/10131/00013380
• Web Site: https://api.elsevier.com/content/article/PII:S0045793020302073?httpAccept=text/xml
• Web Site: https://api.elsevier.com/content/article/PII:S0045793020302073?httpAccept=text/plain
• 本文言語コード: en
• 資料種別: journal article
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