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Stability analysis of numerical interface conditions in fluid–structure thermal analysis

✍ Scribed by M. B. Giles

Publisher: John Wiley and Sons
Year: 1997
Tongue: English
Weight: 200 KB
Volume: 25
Category: Article
ISSN: 0271-2091
DOI: 10.1002/(sici)1097-0363(19970830)25:4<421::aid-fld557>3.0.co;2-j

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✦ Synopsis

This paper analyses the numerical stability of coupling procedures in modelling the thermal diffusion in a solid and a ¯uid with continuity of temperature and heat ¯ux at the interface. A simple one-dimensional model is employed with uniform material properties and grid density in each domain. A number of different explicit and implicit algorithms are considered for both the interior equations and the boundary conditions. The analysis shows that in general these are stable provided that Dirichlet boundary conditions are imposed on the ¯uid and Neumann boundary conditions are imposed on the solid; in each case the imposed values are obtained from the other domains.

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