Simulation of compressible fluid-elastic solid interactions

S. E. Ray, G. P. Wren, Tayfun E. Tezduyar

Research output: Chapter in Book/Report/Conference proceedingConference contribution


A numerical model for studying the interaction between a compressible fluid and an elastic solid is described. The fluid is only slightly compressible, but large pressure changes in the problem (ambient to 50 MPa) require that the compressibility be taken into account. The fluid is treated as barotropic, which means that the pressure is a function of the density alone. It is modeled using a stabilized spacetime finite element formulation which can automatically handle the changes in the size and shape of the computational domain caused by the deformation and motion of the solid. The solid is treated as linearly elastic and is modeled using a Galerkin finite element method. The solid is modeled using classical linear elasticity theory, instead of, e.g., plate or beam theory. This allows the modeling of structures of arbitrary shapes. The coupled model is used to study an interior flow problem in which a defoimable piston controls the size of an orifice through which the liquid flows. The vibration of the piston may have an important effect on the mass flow rate of the liquid.

Original languageEnglish
Title of host publication35th Aerospace Sciences Meeting and Exhibit
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
Number of pages11
Publication statusPublished - 1997
Externally publishedYes
Event35th Aerospace Sciences Meeting and Exhibit, 1997 - Reno, United States
Duration: 1997 Jan 61997 Jan 9


Other35th Aerospace Sciences Meeting and Exhibit, 1997
Country/TerritoryUnited States

ASJC Scopus subject areas

  • Space and Planetary Science
  • Aerospace Engineering


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