Multi-Step Strong Coupling Method for Interaction of Incompressible Viscous Flow and an Elastic Body.

大輔, 石原; 忍, 吉村; 元基, 矢川

doi:10.1299/kikaib.68.2451

Cited by 2 publications

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References 14 publications

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“…Fluid-Structure Interaction analysis (FSI) is a special case of the multi-domain method. In FSI, force continuity is often achieved at the interface rather than pressure continuity (23) ; pressure discontinuity could not be a problem in FSI. However, in these multi-domain methods, there is no mass penetration through the interface that could cause the viscous error previously clarified by the author.…”

Section: Resultsmentioning

confidence: 99%

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Numerical Method for Deforming Solidification Fronts in Continuous Casting

Ito

2006

JTST

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Pressure and velocity are generally discontinuous at the solidification front when the solid domain is deformed. This discontinuity, which has been ignored in most conventional solidification models for continuous casting processes, could cause significant numerical error around the solidification front in numerical simulations. To overcome error, a solidification front-tracking model in which the liquid-solid interface is discontinuous for pressure and velocity was developed. Assuming a sharp solidification front at the solidification front, the liquid and the solid domains are weakly coupled for momentum transport equations. The present model was proved to be more effective in cases of higher solidification rate such as in twin roll rapid cooling casting.

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Section: Resultsmentioning

confidence: 99%

“…Here, the front-tracking and the solid temperature field are solved only in a weak coupling manner. The weak coupling method could be less stable than the strong coupling method (23) that is easily applicable to the single-domain method (4) . Therefore, the author overcame the instability with the one-shot S.F.…”

Section: Mathematical Model (Energy Model)mentioning

confidence: 99%

Numerical Method for Deforming Solidification Fronts in Continuous Casting

Ito

2006

JTST

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Heat Transfer Model for Thin Solidified Material in Continuous Casting

Ito

2007

Mater. Trans.

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An asymptotic explicit numerical method was developed for the Stefan problem in which a series of solidification rates and boundary temperatures for the solidified material are given and the boundary heat flux is returned. A spectral method with several basis functions of a specialized shape in the solidification problem was adopted. Combined with multi-dimensional computational fluid dynamics methods for the liquid zone, this method is adequate for resolving the thin solidified material problem for a variety of continuous casting processes e.g. thin slab continuous casting, melt-spinning, twin roll casting, and edge-defined film-fed growth. The method is less expensive than conventional numerical methods and as accurate as a direct numerical approach such as the Finite Difference Method especially in the case of the Stefan number ) 1 or in the case of variable material properties.

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Multi-Step Strong Coupling Method for Interaction of Incompressible Viscous Flow and an Elastic Body.

Cited by 2 publications

References 14 publications

Numerical Method for Deforming Solidification Fronts in Continuous Casting

Numerical Method for Deforming Solidification Fronts in Continuous Casting

Heat Transfer Model for Thin Solidified Material in Continuous Casting

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