A High-precision calculation method for interface normal and curvature on an unstructured grid
非構造格子系における高精度界面勾配・曲率計算法
伊藤 啓; 功刀 資彰*; 大野 修司; 上出 英樹; 大島 宏之
Ito, Kei; Kunugi, Tomoaki*; Ohno, Shuji; Kamide, Hideki; Ohshima, Hiroyuki
In the volume-of-fluid algorithm, the calculations of the interface normal and curvature are crucially important for accurately simulating interfacial flows. In this paper, the authors develop a height function method that works appropriately on an unstructured grid. In the process, the definition of the height function is discussed, and the high-precision calculation method of the interface normal is developed to meet the necessary condition for a second-order method. The curvature calculation method is also discussed and the approximated quadric curve of an interface is employed to calculate the curvature. Following a basic verification, the developed height function method is shown to successfully provide superior calculation accuracy and highly reduced computational cost compared with conventional calculation methods in terms of the interface normal and curvature.
使用言語 : English
掲載資料名 : Journal of Computational Physics
: 273
:
ページ数 : p.38 - 53
発行年月 : 2014/09
出版社名 : Elsevier Academic Press
特許データ :
PDF :
論文URL :
キーワード : Interfacial flow; Volume-of-fluid; Unstructured grid; Interface normal; Curvature
使用施設 :
広報プレスリリース :
論文解説記事
(成果普及情報誌)
: 気液界面運動の物理ベースシミュレーションを実現(高速炉ガス巻き込み現象の機構論的解析評価システム開発)[/]
受委託・共同研究相手機関 :
 
登録番号 : AA20140166
抄録集掲載番号 : 42000867
論文投稿番号 : 14524
Accesses  (From Jun. 2, 2014)
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