A Numerical model based on the mixed interface‐tracking/interface‐capturing technique (MITICT) for flows with fluid–solid and fluid–fluid interfaces

Cruchaga, Marcela; Celentano, Diego J.; Tezduyar, Tayfun E.

doi:10.1002/fld.1498

Cited by 27 publications

(25 citation statements)

References 37 publications

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“…The Mixed Interface-Tracking/Interface-Capturing Technique (MITICT) [15] was introduced in 2001 for computation of flow problems that involve both interfaces that can be accurately tracked with a moving-mesh method and interfaces that are too complex or unsteady to be tracked and therefore require an interface-capturing technique. The MITICT was successfully tested in [68,69]. We believe that it is only meaningful to propose additional nonmoving-mesh techniques (that are claimed to be better alternatives to moving-mesh techniques) if the categories of problems that cannot be solved with moving-mesh techniques that the new technique is targeting are clearly identified, with computed examples of complex, real-world problems in those categories.…”

Section: Introductionmentioning

confidence: 96%

Stabilized space–time computation of wind-turbine rotor aerodynamics

et al. 2011

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We show how we use the Deforming-SpatialDomain/Stabilized Space-Time (DSD/SST) formulation for accurate 3D computation of the aerodynamics of a windturbine rotor. As the test case, we use the NREL 5MW offshore baseline wind-turbine rotor. This class of computational problems are rather challenging, because they involve large Reynolds numbers and rotating turbulent flows, and computing the correct torque requires an accurate and meticulous numerical approach. We compute the problem with both the original version of the DSD/SST formulation and a recently introduced version with an advanced turbulence model. The DSD/SST formulation with the advanced turbulence model is a space-time version of the residual-based variational multiscale method. We compare our results to those reported recently, which were obtained with the residualbased variational multiscale Arbitrary Lagrangian-Eulerian method using NURBS for spatial discretization and which we take as the reference solution. While the original DSD/SST formulation yields torque values not far from the reference solution, the DSD/SST formulation with the variational multiscale turbulence model yields torque values very close to the reference solution.

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Section: Introductionmentioning

confidence: 96%

Stabilized space–time computation of wind-turbine rotor aerodynamics

et al. 2011

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“…With the terminology used in [84], we can categorize a method for flow problems with moving boundaries and interfaces as an interface-tracking (moving-mesh) technique or an interface-capturing (nonmoving-mesh) technique, or a combination of the two. Comments on the advantages and disadvantages of these two categories of techniques and how they can be enhanced or combined were provided in [14], together with references [7,8,28,51,[84][85][86] on these matters.…”

Section: Introductionmentioning

confidence: 99%

Numerical-performance studies for the stabilized space–time computation of wind-turbine rotor aerodynamics

et al. 2011

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We present our numerical-performance studies for 3D wind-turbine rotor aerodynamics computation with the deforming-spatial-domain/stabilized space-time (DSD/SST) formulation. The computation is challenging because of the large Reynolds numbers and rotating turbulent flows, and computing the correct torque requires an accurate and meticulous numerical approach. As the test case, we use the NREL 5MW offshore baseline windturbine rotor. We compute the problem with both the original version of the DSD/SST formulation and the version with an advanced turbulence model. The DSD/SST formulation with the turbulence model is a recently-introduced space-time version of the residual-based variational multiscale method. We include in our comparison as reference solution the results obtained with the residual-based variational multiscale Arbitrary Lagrangian-Eulerian method using NURBS for spatial discretization. We test different levels of mesh refinement and different definitions for the stabilization parameter embedded in the "least squares on incompressibility constraint" stabilization. We compare the torque values obtained.

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“…The MITICT was introduced for FSI with multiple fluids or free-surface flows. It was successfully used in a number of test problems [3,4]. In this work, only a comparison with the Particle Finite Element Method (PFEM) will be performed.…”

Section: Introductionmentioning

confidence: 99%

Interaction between an elastic structure and free-surface flows: experimental versus numerical comparisons using the PFEM

et al. 2008

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The paper aims to introduce new fluid-structure interaction (FSI) tests to compare experimental results with numerical ones. The examples have been chosen for a particular case for which experimental results are not much reported. This is the case of FSI including free surface flows. The possibilities of the Particle Finite Element Method (PFEM) for the simulation of free surface flows is also tested. The simulations are run using the same scale as the experiment in order to minimize errors due to scale effects. Different scenarios are simulated by changing the boundary conditions for reproducing flows with the desired characteristics. Details of the input data for all the examples studied are given. The aim is to identifying benchmark problems for FSI including free surface flows for future comparisons between different numerical approaches.

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A Numerical model based on the mixed interface‐tracking/interface‐capturing technique (MITICT) for flows with fluid–solid and fluid–fluid interfaces

Cited by 27 publications

References 37 publications

Stabilized space–time computation of wind-turbine rotor aerodynamics

Stabilized space–time computation of wind-turbine rotor aerodynamics

Numerical-performance studies for the stabilized space–time computation of wind-turbine rotor aerodynamics

Interaction between an elastic structure and free-surface flows: experimental versus numerical comparisons using the PFEM

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