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An immersed-shell method for modelling fluid-structure interactions.

ABSTRACT: The paper presents a novel method for numerically modelling fluid-structure interactions. The method consists of solving the fluid-dynamics equations on an extended domain, where the computational mesh covers both fluid and solid structures. The fluid and solid velocities are relaxed to one another through a penalty force. The latter acts on a thin shell surrounding the solid structures. Additionally, the shell is represented on the extended domain by a non-zero shell-concentration field, which is obtained by conservatively mapping the shell mesh onto the extended mesh. The paper outlines the theory underpinning this novel method, referred to as the immersed-shell approach. It also shows how the coupling between a fluid- and a structural-dynamics solver is achieved. At this stage, results are shown for cases of fundamental interest.

SUBMITTER: Vire A

PROVIDER: S-EPMC4290410 | biostudies-literature | 2015 Feb

REPOSITORIES: biostudies-literature

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An immersed-shell method for modelling fluid-structure interactions.

Viré A A Xiang J J Pain C C CC

Philosophical transactions. Series A, Mathematical, physical, and engineering sciences 20150201 2035

The paper presents a novel method for numerically modelling fluid-structure interactions. The method consists of solving the fluid-dynamics equations on an extended domain, where the computational mesh covers both fluid and solid structures. The fluid and solid velocities are relaxed to one another through a penalty force. The latter acts on a thin shell surrounding the solid structures. Additionally, the shell is represented on the extended domain by a non-zero shell-concentration field, which ...[more]

PMID: 25583857

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