An embedded strategy for the analysis of fluid structure interaction problems

Costarelli, Santiago D.; Garelli, Luciano; Cruchaga, Marcela; Storti, Mario A.; Ausensi, Ronald; Idelsohn, Sergio

doi:10.1016/j.cma.2015.11.001

Cited by 18 publications

(9 citation statements)

References 40 publications

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“…FSI problems of this type occur in a wide variety of applications, such as ones involving particulate flows (suspensions, sedimentation, fluidized beds), valves and moving appendages, buoy structures, ship maneuvering, and underwater vehicles, to name a few. A wide range of numerical techniques have been developed to simulate such FSI problems, including arbitrary Lagrangian-Eulerian (ALE) methods [1][2][3], methods based on level-sets [4,5], fictitious domain methods [6][7][8], embedded boundary methods [9] and immersed boundary methods [10][11][12][13][14][15][16][17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

A stable partitioned FSI algorithm for rigid bodies and incompressible flow. Part I: Model problem analysis

Banks

Henshaw

Schwendeman

et al. 2017

Journal of Computational Physics

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A stable partitioned algorithm is developed for fluid-structure interaction (FSI) problems involving viscous incompressible flow and rigid bodies. This added-mass partitioned (AMP) algorithm remains stable, without sub-iterations, for light and even zero mass rigid bodies when added-mass and viscous addeddamping effects are large. The scheme is based on a generalized Robin interface condition for the fluid pressure that includes terms involving the linear acceleration and angular acceleration of the rigid body. Added-mass effects are handled in the Robin condition by inclusion of a boundary integral term that depends on the pressure. Added-damping effects due to the viscous shear forces on the body are treated by inclusion of added-damping tensors that are derived through a linearization of the integrals defining the force and torque. Added-damping effects may be important at low Reynolds number, or, for example, in the case of a rotating cylinder or rotating sphere when the rotational moments of inertia are small. In this first part of a two-part series, the properties of the AMP scheme are motivated and evaluated through the development and analysis of some model problems. The analysis shows when and why the traditional partitioned scheme becomes unstable due to either added-mass or added-damping effects. The analysis also identifies the proper form of the added-damping which depends on the discrete time-step and the grid-spacing normal to the rigid body. The results of the analysis are confirmed with numerical simulations that also demonstrate a second-order accurate implementation of the AMP scheme.

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Section: Introductionmentioning

confidence: 99%

A stable partitioned FSI algorithm for rigid bodies and incompressible flow. Part I: Model problem analysis

Banks

Henshaw

Schwendeman

et al. 2017

Journal of Computational Physics

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show abstract

“…Simulations were performed with different density values (from 50 kg m −3 to 900 kg m −3 ), without and with free surface. Notice that the added mass and buoyancy effects play a relevant role in such computations (e.g., as was demonstrated by Costarelli et al, 2016).…”

Section: Examples Of Rotational Casesmentioning

confidence: 84%

A fictitious domain approach based on a viscosity penalty method to simulate wave/structure interaction

Ducassou

Núñez

Cruchaga

et al. 2017

Journal of Hydraulic Research

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This work presents an original numerical model for a free surface flow interacting with a spring-block system. The formulation is based on the fictitious domain approach and a penalty method on viscosity to describe the rigid solid motion. The incompressible Navier-Stokes equations are solved in the whole domain and the free surface and the body contour are captured using a Volume of Fluid method. To describe the rigid body motion, a single degree of freedom model, able to represent translation or rotation, is embedded in the code. The discrete equations are written in a well known finite volume framework over Cartesian grids. In such a context, the external spring and damping forces are represented as body forces in the solid region. The proposed strategy is tested in a sloshing damping system. The numerical results are compared with experimental data obtained within the present study. Finally, the method is used to simulate a wave energy converter system as an illustration of a rotational case.

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“…Mantecón et al [19] modeled fluids using ANSYS CFX software, modeled nuclear fuel plates using software ANSYS Mechanical, and then performed fluid-solid coupling analysis, proposing a numerical method for fluid-solid coupling analysis of nuclear fuel plates under axial flow conditions. Costarelli [20] proposed a Navier-Stokes solver based on Cartesian structured finite volume discretization with embedded bodies and adopted an explicit partitioned strategy to realize fluid-solid coupling.…”

Section: Introductionmentioning

confidence: 99%

Comparative Study on Vibration Fatigue Characteristics of Fuel Tank Material in Fuel and Air Media

Liu

Yang

et al. 2020

Materials

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To quantify the influence of the fuel medium on the fatigue performance of fuel tank materials, a comparative study was performed on the vibration fatigue characteristics of parent material specimens in fuel and air media. A fluid–solid coupling model was established based on the virtual mass method. Meanwhile, vibration fatigue tests of Q235BF specimens were performed in fuel and air media. The quantitative relation of the fatigue life of specimens in the air medium and that in the fuel medium was obtained. Fracture observation and energy spectrum analysis revealed the influence law of fuel on notches of specimens. The modal analysis of the finite element model proves that the stress of the specimens in the fuel medium is larger than that in the air medium. In this condition, they have shorter life. Finally, four approaches were used to calculate the fatigue life of the specimens to compare with the test life. The reasonable fatigue life prediction method was obtained in the case of fuel and air media.

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An embedded strategy for the analysis of fluid structure interaction problems

Cited by 18 publications

References 40 publications

A stable partitioned FSI algorithm for rigid bodies and incompressible flow. Part I: Model problem analysis

A stable partitioned FSI algorithm for rigid bodies and incompressible flow. Part I: Model problem analysis

A fictitious domain approach based on a viscosity penalty method to simulate wave/structure interaction

Comparative Study on Vibration Fatigue Characteristics of Fuel Tank Material in Fuel and Air Media

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