Research Output
The use of artificial compressibility to improve partitioned semi-implicit FSI coupling within the classical Chorin–Témam projection framework
  Over the last decade the classical Chorin–Témam projection method has been utilized to address fluid- structure interaction in a semi-implicit manner. In previous studies the fluid projection step is fully coupled with the structural motion due to the divergence-free constraint. A set of simultaneous equa- tions thus have to be iteratively solved. To overcome this difficulty, a simple and accurate partitioned semi-implicit coupling method is proposed based on the artificial compressibility (AC) in this paper. The iterated AC parameter decouples the pressure, end-of-step velocity and structural motion within the characteristic-based split scheme. The present approach is completely matrix-free and has unlimited ac- cess to the finite elements. Its performance is demonstrated for an oscillating bluffbody subjected to uniform flows.

  • Type:

    Article

  • Date:

    02 February 2018

  • Publication Status:

    Published

  • Publisher

    Elsevier BV

  • DOI:

    10.1016/j.compfluid.2018.01.022

  • Cross Ref:

    S0045793018300318

  • ISSN:

    0045-7930

  • Library of Congress:

    TA Engineering (General). Civil engineering (General)

  • Dewey Decimal Classification:

    620 Engineering and allied operations

  • Funders:

    National Natural Science Foundation of China

Citation

He, T., Wang, T., & Zhang, H. (2018). The use of artificial compressibility to improve partitioned semi-implicit FSI coupling within the classical Chorin–Témam projection framework. Computers and Fluids, 166, 64-77. https://doi.org/10.1016/j.compfluid.2018.01.022

Authors

Keywords

Fluid-structure interaction; Semi-implicit coupling; Artificial compressibility; Projection method; CBS

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