Communications on Applied Mathematics and Computation ›› 2019, Vol. 1 ›› Issue (1): 61-80.doi: 10.1007/s42967-019-0004-0

• ORIGINAL PAPERS • 上一篇    下一篇

Unconditionally Stable Pressure-Correction Schemes for a Nonlinear Fluid-Structure Interaction Model

Ying He, Jie Shen   

  1. Department of Mathematics, Purdue University, West Lafayette, IN 47907, USA
  • 收稿日期:2018-06-08 修回日期:2018-11-16 出版日期:2019-03-20 发布日期:2019-05-11
  • 通讯作者: Jie Shen E-mail:shen7@purdue.edu
  • 基金资助:
    This work is partially supported by NSF DMS-1620262,DMS-1720442 and AFOSR FA9550-16-1-0102.

Unconditionally Stable Pressure-Correction Schemes for a Nonlinear Fluid-Structure Interaction Model

Ying He, Jie Shen   

  1. Department of Mathematics, Purdue University, West Lafayette, IN 47907, USA
  • Received:2018-06-08 Revised:2018-11-16 Online:2019-03-20 Published:2019-05-11
  • Contact: Jie Shen E-mail:shen7@purdue.edu
  • Supported by:
    This work is partially supported by NSF DMS-1620262,DMS-1720442 and AFOSR FA9550-16-1-0102.

摘要: We consider in this paper numerical approximation of a nonlinear fluid-structure interaction (FSI) model with a fixed interface. We construct a new class of pressure-correction schemes for the FSI problem, and prove rigorously that they are unconditionally stable. These schemes are computationally very efficient, as they lead to, at each time step, a coupled linear elliptic system for the velocity and displacement in the whole region and a discrete Poisson equation in the fluid region.

关键词: Fluid-structure interaction, Pressure correction, Stability analysis

Abstract: We consider in this paper numerical approximation of a nonlinear fluid-structure interaction (FSI) model with a fixed interface. We construct a new class of pressure-correction schemes for the FSI problem, and prove rigorously that they are unconditionally stable. These schemes are computationally very efficient, as they lead to, at each time step, a coupled linear elliptic system for the velocity and displacement in the whole region and a discrete Poisson equation in the fluid region.

Key words: Fluid-structure interaction, Pressure correction, Stability analysis

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