TITLE

Multiscale space-time fluid-structure interaction techniques

AUTHOR(S)
Takizawa, Kenji; Tezduyar, Tayfun
PUB. DATE
September 2011
SOURCE
Computational Mechanics;Sep2011, Vol. 48 Issue 3, p247
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We present the multiscale space-time techniques we have developed for fluid-structure interaction (FSI) computations. Some of these techniques are multiscale in the way the time integration is performed (i.e. temporally multiscale), some are multiscale in the way the spatial discretization is done (i.e. spatially multiscale), and some are in the context of the sequentially-coupled FSI (SCFSI) techniques developed by the Team for Advanced Flow Simulation and Modeling $${({\rm T} \bigstar {\rm AFSM})}$$. In the multiscale SCFSI technique, the FSI computational effort is reduced at the stage we do not need it and the accuracy of the fluid mechanics (or structural mechanics) computation is increased at the stage we need accurate, detailed flow (or structure) computation. As ways of increasing the computational accuracy when or where needed, and beyond just increasing the mesh refinement or decreasing the time-step size, we propose switching to more accurate versions of the Deforming-Spatial-Domain/Stabilized Space-Time (DSD/SST) formulation, using more polynomial power for the basis functions of the spatial discretization or time integration, and using an advanced turbulence model. Specifically, for more polynomial power in time integration, we propose to use NURBS, and as an advanced turbulence model to be used with the DSD/SST formulation, we introduce a space-time version of the residual-based variational multiscale method. We present a number of test computations showing the performance of the multiscale space-time techniques we are proposing. We also present a stability and accuracy analysis for the higher-accuracy versions of the DSD/SST formulation.
ACCESSION #
64894657

 

Related Articles

  • A Comparison of One-Way and Two-Way Coupling Methods for Numerical Analysis of Fluid-Structure Interactions. Benra, Friedrich-Karl; Dohmen, Hans Josef; Ji Pei; Schuster, Sebastian; Bo Wan // Journal of Applied Mathematics;2011, Special section p1 

    The interaction between fluid and structure occurs in a wide range of engineering problems. The solution for such problems is based on the relations of continuum mechanics and is mostly solved with numerical methods. It is a computational challenge to solve such problems because of the complex...

  • Efficiency and accuracy of fluid-structure interaction simulations using an implicit partitioned approach. Sternel, D.; Schäfer, M.; Heck, M.; Yigit, S. // Computational Mechanics;Dec2008, Vol. 43 Issue 1, p103 

    An implicit partitioned arbitrary Lagrangian– Eulerian approach for fluid-structure interaction computations is considered. Enhancements of the coupled solution procedure by nonlinear multigrid techniques, an adaptive underrelaxation, and proper grid movement techniques are investigated.

  • The dynamics and stability of circular cylindrical shells containing and submerged in flowing fluid using a higher order boundary element method. Uğurlu, B.; Ergin, A. // Proceedings of the Institution of Mechanical Engineers -- Part M;Dec2009, Vol. 223 Issue 4, p489 

    This paper presents a higher order, three-dimensional boundary element method for investigating the dynamics and stability of elastic structures containing and/or submerged in flowing fluid. The method developed can be applied to any shape of elastic structures partially or completely in contact...

  • On the coupling between fluid flow and mesh motion in the modelling of fluid—structure interaction. Dettmer, Wulf; Perić, Djordje // Computational Mechanics;Dec2008, Vol. 43 Issue 1, p81 

    Partitioned Newton type solution strategies for the strongly coupled system of equations arising in the computational modelling of fluid–solid interaction require the evaluation of various coupling terms. An essential part of all ALE type solution strategies is the fluid mesh motion. In...

  • Locomotion of a flapping flexible plate. Hua, Ru-Nan; Zhu, Luoding; Lu, Xi-Yun // Physics of Fluids;Dec2013, Vol. 25 Issue 12, p121901 

    The locomotion of a flapping flexible plate in a viscous incompressible stationary fluid is numerically studied by an immersed boundary-lattice Boltzmann method for the fluid and a finite element method for the plate. When the leading-edge of the flexible plate is forced to heave sinusoidally,...

  • Computation of residence time in the simulation of pulsatile ventricular assist devices. Long, C.; Esmaily-Moghadam, M.; Marsden, A.; Bazilevs, Y. // Computational Mechanics;Oct2014, Vol. 54 Issue 4, p911 

    A continuum-based model of particle residence time for moving-domain fluid mechanics and fluid-structure interaction (FSI) computations is proposed, analyzed, and applied to the simulation of an adult pulsatile ventricular assist device (PVAD). Residence time is a quantity of clinical interest...

  • Beam Elements with Trapezoidal Cross Section Deformation Modes Based on the Absolute Nodal Coordinate Formulation. Matikainen, Marko K.; Dmitrochenko, Oleg; Mikkola, Aki // AIP Conference Proceedings;9/30/2010, Vol. 1281 Issue 1, p1266 

    In this study, higher order beam elements are developed based on the absolute nodal coordinate formulation. The absolute nodal coordinate formulation is a finite element procedure that was recently proposed for flexible multibody applications. Many different elements based on the absolute nodal...

  • Stabilized space-time computation of wind-turbine rotor aerodynamics. Takizawa, Kenji; Henicke, Bradley; Tezduyar, Tayfun; Hsu, Ming-Chen; Bazilevs, Yuri // Computational Mechanics;Sep2011, Vol. 48 Issue 3, p333 

    We show how we use the Deforming-Spatial-Domain/Stabilized Space-Time (DSD/SST) formulation for accurate 3D computation of the aerodynamics of a wind-turbine rotor. As the test case, we use the NREL 5MW offshore baseline wind-turbine rotor. This class of computational problems are rather...

  • A parallel sparse algorithm targeting arterial fluid mechanics computations. Manguoglu, Murat; Takizawa, Kenji; Sameh, Ahmed; Tezduyar, Tayfun // Computational Mechanics;Sep2011, Vol. 48 Issue 3, p377 

    Iterative solution of large sparse nonsymmetric linear equation systems is one of the numerical challenges in arterial fluid-structure interaction computations. This is because the fluid mechanics parts of the fluid + structure block of the equation system that needs to be solved at every...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics