The Experts below are selected from a list of 252 Experts worldwide ranked by ideXlab platform
Miguel A. Fernández - One of the best experts on this subject based on the ideXlab platform.
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Fully decoupled time-marching schemes for Incompressible Fluid/thin-walled structure interaction
Journal of Computational Physics, 2015Co-Authors: Miguel A. Fernández, Mikel Landajuela, Marina VidrascuAbstract:In this paper we introduce a class of fully decoupled time-marching schemes (velocity-pressure-displacement splitting) for the coupling of an Incompressible Fluid with a thin-walled elastic or viscoelastic structure. The time splitting combines a projection method in the Fluid with a specific Robin-Neumann treatment of the interface coupling. A priori energy estimates guaranteeing unconditional stability are established for some of the schemes. The accuracy and performance of the methods proposed is illustrated by a thorough numerical study.
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Incremental displacement-correction schemes for Incompressible Fluid-structure interaction
Numerische Mathematik, 2013Co-Authors: Miguel A. FernándezAbstract:In this paper we introduce a class of incremental displacement-correction schemes for the explicit coupling of a thin-structure with an Incompressible Fluid. These methods enforce a specific Robin–Neumann explicit treatment of the interface coupling. We provide a general stability and convergence analysis that covers both the incremental and the non-incremental variants. Their stability properties are independent of the added-mass effect. The superior accuracy of the incremental schemes (with respect to the original non-incremental variant) is highlighted by the error estimates, and then confirmed in a benchmark by numerical experiments.
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Displacement-velocity correction schemes for Incompressible Fluid-structure interaction
Comptes Rendus Mathématique, 2011Co-Authors: Miguel A. Fernández, Jimmy MullaertAbstract:In this Note, we propose a new class of time-marching schemes for the explicit coupling of an Incompressible Fluid and an elastic solid (not necessarily thin). We state a general energy-based stability result and illustrate the accuracy of the different variants in a numerical benchmark.
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Incremental displacement-correction schemes for the explicit coupling of a thin structure with an Incompressible Fluid
Comptes Rendus Mathématique, 2011Co-Authors: Miguel A. FernándezAbstract:In this note we propose two incremental displacement-correction schemes for the explicit coupling of a thin structure with an Incompressible Fluid. The stability and the superior accuracy of these schemes (with respect to the original non-incremental variant) are theoretically analyzed and then numerically confirmed in a benchmark.
Gustavo A Ledezma - One of the best experts on this subject based on the ideXlab platform.
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benchmark problems for Incompressible Fluid flows with structural interactions
Computers & Structures, 2007Co-Authors: Klausjurgen Bathe, Gustavo A LedezmaAbstract:Various methods of analysis for the solution of Fluid flows with structural interactions have been proposed in the literature, and new techniques are being developed. In these endeavors, to advance the field, thorough evaluations of the procedures are necessary. To help in establishing such evaluations, we present in this paper the solutions of some benchmark problems. The results can be used to evaluate existing and new formulations of Incompressible Fluid flows with structural interactions.
Yu E Prosviryakov - One of the best experts on this subject based on the ideXlab platform.
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Convective layered flows of a vertically whirling viscous Incompressible Fluid. Velocity field investigation
'Samara State Technical University', 2019Co-Authors: Burmasheva N., Yu E ProsviryakovAbstract:This article discusses the solvability of an overdetermined system of heat convection equations in the Boussinesq approximation. The Oberbeck-Boussinesq system of equations, supplemented by an incompressibility equation, is overdetermined. The number of equations exceeds the number of unknown functions, since non-uniform layered flows of a viscous Incompressible Fluid are studied (one of the components of the velocity vector is identically zero). The solvability of the non-linear system of Oberbeck-Boussinesq equations is investigated. The solvability of the overdetermined system of non-linear Oberbeck-Boussinesq equations in partial derivatives is studied by constructing several particular exact solutions. A new class of exact solutions for describing three-dimensional non-linear layered flows of a vertical swirling viscous Incompressible Fluid is presented. The vertical component of vorticity in a non-rotating Fluid is generated by a non-uniform velocity field at the lower boundary of an infinite horizontal Fluid layer. Convection in a viscous Incompressible Fluid is induced by linear heat sources. The main attention is paid to the study of the properties of the flow velocity field. The dependence of the structure of this field on the magnitude of vertical twist is investigated. It is shown that, with nonzero vertical twist, one of the components of the velocity vector allows stratification into five zones through the thickness of the layer under study (four stagnant points). The analysis of the velocity field has shown that the kinetic energy of the Fluid can twice take the zero value through the layer thickness. © 2019 Samara State Technical University. All rights reserved.12281GU/2017Competing interests. We declare that we have no conflicts of interest in the authorship or publication of this contribution. Authors’ contributions and responsibilities. We are fully responsible for submitting the final manuscript in print. Each of us has approved the final version of the manuscript. Funding. This work was supported by the Foundation for Assistance to Small Innovative Enterprises in Science and Technology (the UMNIK program, agreement 12281GU/2017)
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ekman convective layer flow of a viscous Incompressible Fluid
Izvestiya Atmospheric and Oceanic Physics, 2018Co-Authors: A V Gorshkov, Yu E ProsviryakovAbstract:Analytical solutions for generalizing the Ekman stationary flow of a viscous Incompressible Fluid in an infinite layer are obtained. The solution of an overdetermined system of the Oberbeck–Boussinesq equations is considered. It is suggested to use a class of exact solutions for this problem. It is shown that the structure of the solutions allows one to preserve the advective derivative in the heat-conductivity equation; this makes it possible to model the stratification of the temperature and pressure fields and describe the oceanic countercurrents.
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waves of pressure in viscous Incompressible Fluid
MECHANICS RESOURCE AND DIAGNOSTICS OF MATERIALS AND STRUCTURES (MRDMS-2017): Proceedings of the 11th International Conference on Mechanics Resource an, 2017Co-Authors: Yu E ProsviryakovAbstract:A three-dimensional non-stationary flow of a viscous Incompressible Fluid in the infinite space is examined. The description of possible shapes of pressure is based on the equation for the axial component of velocity, which is an exact consequence of the basic equations. New analytical exact solutions to the Navier-Stokes equations for periodic and localized traveling waves have been found.
Marina Vidrascu - One of the best experts on this subject based on the ideXlab platform.
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Fully decoupled time-marching schemes for Incompressible Fluid/thin-walled structure interaction
Journal of Computational Physics, 2015Co-Authors: Miguel A. Fernández, Mikel Landajuela, Marina VidrascuAbstract:In this paper we introduce a class of fully decoupled time-marching schemes (velocity-pressure-displacement splitting) for the coupling of an Incompressible Fluid with a thin-walled elastic or viscoelastic structure. The time splitting combines a projection method in the Fluid with a specific Robin-Neumann treatment of the interface coupling. A priori energy estimates guaranteeing unconditional stability are established for some of the schemes. The accuracy and performance of the methods proposed is illustrated by a thorough numerical study.
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Incremental displacement-correction schemes for the explicit coupling of an Incompressible Fluid with a non-linear shell
2012Co-Authors: Marina VidrascuAbstract:We present an incremental correction scheme which guarantee stability and optimal first-order accuracy for a Fluid-structure interaction problem involving an Incompressible Fluid and a non linear shell
Klausjurgen Bathe - One of the best experts on this subject based on the ideXlab platform.
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benchmark problems for Incompressible Fluid flows with structural interactions
Computers & Structures, 2007Co-Authors: Klausjurgen Bathe, Gustavo A LedezmaAbstract:Various methods of analysis for the solution of Fluid flows with structural interactions have been proposed in the literature, and new techniques are being developed. In these endeavors, to advance the field, thorough evaluations of the procedures are necessary. To help in establishing such evaluations, we present in this paper the solutions of some benchmark problems. The results can be used to evaluate existing and new formulations of Incompressible Fluid flows with structural interactions.
