Flow simulation and high performance computing

Tezduyar, Tayfun E.; Aliabadi, Shahrouz; Behr, Marek; Johnson, Arthur M.; Kalro, V.; Litke, M.

doi:10.1007/s004660050158

Cited by 124 publications

(67 citation statements)

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“…[24]. We note that in application of the FEM to flows with moving mechanical components, alternatively to the sliding-interface approach, the Shear-Slip Mesh Update Method [54][55][56] and its more general versions [57,58] may also be used to handle objects in relative motion. A recently developed set of space-time (ST) methods can serve as a third alternative in dealing with objects in relative motion.…”

Section: Discretization and Special Fsi Techniques Formentioning

confidence: 99%

Fluid–Structure Interaction Modeling of Vertical-Axis Wind Turbines

Bazilevs

Korobenko

Deng

et al. 2014

Journal of Applied Mechanics

123

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Full-scale, 3D, time-dependent aerodynamics and fluid-structure interaction (FSI) simulations of a Darrieus-type vertical-axis wind turbine (VAWT) are presented. A structural model of the Windspire VAWT (Windspire energy, http://www.windspireenergy.com/) is developed, which makes use of the recently proposed rotation-free Kirchhoff-Love shell and beam/cable formulations. A moving-domain finite-element-based ALE-VMS (arbitrary Lagrangian-Eulerian-variational-multiscale) formulation is employed for the aerodynamics in combination with the sliding-interface formulation to handle the VAWT mechanical components in relative motion. The sliding-interface formulation is augmented to handle nonstationary cylindrical sliding interfaces, which are needed for the FSI modeling of VAWTs. The computational results presented show good agreement with the field-test data. Additionally, several scenarios are considered to investigate the transient VAWT response and the issues related to self-starting.

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Section: Discretization and Special Fsi Techniques Formentioning

confidence: 99%

Fluid–Structure Interaction Modeling of Vertical-Axis Wind Turbines

Bazilevs

Korobenko

Deng

et al. 2014

Journal of Applied Mechanics

123

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“…Extrapolated. 6 Problem too large to fit in available memory. bility and pex formance for up to 30 processors.…”

Section: Shared Memory Architecturesmentioning

confidence: 99%

“…[6] and references therein). These computations are based on primitive and conservation variable formulations of Navier-Stokes equations of incompressible and compressible flows.…”

Section: Finite Element Techniquesmentioning

confidence: 99%

“…Finite element computations on the Power Challenge constitute a small portion of the overall research described in [6]. They employ loop-level parallelism via compiler directives.…”

Section: Shared Memory Architecturesmentioning

confidence: 99%

“…It has evolved from a family of codes used in the late 80's on the CRAY C90, then ported to Connection Machine Fortran in early 90's, and finally rewritten for a message passing environment. This family of codes has been used to simulate a variety of fluid flows of engineering interest [6], including freesurface flows around hydraulic structures, various stages of parafoil descent, and flows around paratroopers egressing a cargo aircraft. In contrast to ZNSFLOW-D, the XNS is designed to take advantage of unstructured finite element grids, and results in more complex data distribution.…”

Section: Finite Element Implementation On Distributed-memory Machinesmentioning

confidence: 99%

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Comments on Computational Fluid Dynamics (CFD) Code Performance on Scalable Architectures

Behr¹,

Pressel²,

Sturek³

2002

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Finite Element Methods for Fluid Dynamics with Moving Boundaries and Interfaces

Tezduyar

2004

Encyclopedia of Computational Mechanics

152

243

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We provide an overview of the finite element methods we developed in recent years for computation of fluid dynamics problems with moving boundaries and interfaces. This class of problems include those with free surfaces, two‐fluid interfaces, fluid–object and fluid–structure interactions, and moving mechanical components. The methods developed can be classified into two main categories: interface‐tracking and interface‐capturing techniques. Both classes of techniques are based on stabilized formulations, and determination of the stabilization parameters used in these formulations is also highlighted here. The interface‐tracking techniques are based on the deforming‐spatial‐domain/stabilized space–time (DSD/SST) formulation, where the mesh moves to track the interface. The interface‐capturing techniques were developed for two‐fluid flows. They are based on the stabilized formulation, over typically nonmoving meshes, of both the flow equations and an advection equation. The advection equation governs the time‐evolution of an interface function marking the interface location. We also describe some of the additional methods we developed to increase the scope and accuracy of these two classes of techniques. Among them are the enhanced‐discretization interface‐capturing technique (EDICT), which was developed to increase the accuracy in capturing the interface, extensions and offshoots of the EDICT, and mixed solution techniques. The overview of these techniques is supplemented by a number of numerical examples from computation of complex flow problems.

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Flow simulation and high performance computing

Cited by 124 publications

References 0 publications

Fluid–Structure Interaction Modeling of Vertical-Axis Wind Turbines

Fluid–Structure Interaction Modeling of Vertical-Axis Wind Turbines

Comments on Computational Fluid Dynamics (CFD) Code Performance on Scalable Architectures

Finite Element Methods for Fluid Dynamics with Moving Boundaries and Interfaces

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