The Experts below are selected from a list of 10971 Experts worldwide ranked by ideXlab platform
Domingo A. Tarzia - One of the best experts on this subject based on the ideXlab platform.
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THE STEFAN PROBLEM WITH TEMPERATURE-DEPENDENT THERMAL CONDUCTIVITY AND A Convective Term WITH A Convective CONDITION AT THE FIXED FACE
Communications on Pure & Applied Analysis, 2010Co-Authors: Adriana C. Briozzo, María F. Natale, Domingo A. TarziaAbstract:We study a one-phase Stefan problem for a semi-infinite material with temperature-dependent thermal conductivity and a Convective Term with a Convective boundary condition at the fixed face $x=0$. We obtain sufficient conditions for data in order to have a parametric representation of the solution of the similarity type for $t \geq t_0 > 0$ with $t_0 $ an arbitrary positive time. We obtain explicit solutions through the unique solution of a Cauchy problem with the time as a parameter and we also give an algorithm in order to compute the explicit solution.
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Explicit solutions to the one-phase Stefan problem with temperature-dependent thermal conductivity and a Convective Term
International Journal of Engineering Science, 2003Co-Authors: María F. Natale, Domingo A. TarziaAbstract:A one-phase Stefan problem for a semi-infinite material with temperature-dependent thermal conduc- tivity and Convective Term with a constant temperature or a heat flux condition of the typeq0= ffiffi p ðq0 > 0Þ at the fixed face x ¼ 0 is studied. For both cases a parametric representation of the solution of the similarity type is also obtained. 2003 Elsevier Science Ltd. All rights reserved.
María F. Natale - One of the best experts on this subject based on the ideXlab platform.
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THE STEFAN PROBLEM WITH TEMPERATURE-DEPENDENT THERMAL CONDUCTIVITY AND A Convective Term WITH A Convective CONDITION AT THE FIXED FACE
Communications on Pure & Applied Analysis, 2010Co-Authors: Adriana C. Briozzo, María F. Natale, Domingo A. TarziaAbstract:We study a one-phase Stefan problem for a semi-infinite material with temperature-dependent thermal conductivity and a Convective Term with a Convective boundary condition at the fixed face $x=0$. We obtain sufficient conditions for data in order to have a parametric representation of the solution of the similarity type for $t \geq t_0 > 0$ with $t_0 $ an arbitrary positive time. We obtain explicit solutions through the unique solution of a Cauchy problem with the time as a parameter and we also give an algorithm in order to compute the explicit solution.
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Explicit solutions to the one-phase Stefan problem with temperature-dependent thermal conductivity and a Convective Term
International Journal of Engineering Science, 2003Co-Authors: María F. Natale, Domingo A. TarziaAbstract:A one-phase Stefan problem for a semi-infinite material with temperature-dependent thermal conduc- tivity and Convective Term with a constant temperature or a heat flux condition of the typeq0= ffiffi p ðq0 > 0Þ at the fixed face x ¼ 0 is studied. For both cases a parametric representation of the solution of the similarity type is also obtained. 2003 Elsevier Science Ltd. All rights reserved.
P. Becker - One of the best experts on this subject based on the ideXlab platform.
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A unified monolithic approach for multi-fluid flows and fluid–structure interaction using the Particle Finite Element Method with fixed mesh
Computational Mechanics, 2015Co-Authors: P. Becker, S. R. Idelsohn, E. OñateAbstract:This paper describes a strategy to solve multi-fluid and fluid–structure interaction (FSI) problems using Lagrangian particles combined with a fixed finite element (FE) mesh. Our approach is an extension of the fluid-only PFEM-2 (Idelsohn et al., Eng Comput 30(2):2–2, 2013 ; Idelsohn et al., J Numer Methods Fluids, 2014 ) which uses explicit integration over the streamlines to improve accuracy. As a result, the Convective Term does not appear in the set of equations solved on the fixed mesh. Enrichments in the pressure field are used to improve the description of the interface between phases.
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a unified monolithic approach for multi fluid flows and fluid structure interaction using the particle finite element method with fixed mesh
Computational Mechanics, 2015Co-Authors: P. Becker, S. R. Idelsohn, Eugenio OñateAbstract:This paper describes a strategy to solve multi-fluid and fluid---structure interaction (FSI) problems using Lagrangian particles combined with a fixed finite element (FE) mesh. Our approach is an extension of the fluid-only PFEM-2 (Idelsohn et al., Eng Comput 30(2):2---2, 2013; Idelsohn et al., J Numer Methods Fluids, 2014) which uses explicit integration over the streamlines to improve accuracy. As a result, the Convective Term does not appear in the set of equations solved on the fixed mesh. Enrichments in the pressure field are used to improve the description of the interface between phases.
Lutz Angermann - One of the best experts on this subject based on the ideXlab platform.
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Transport-stabilized Semidiscretizations of the Incompressible Navier—Stokes Equations
Computational Methods in Applied Mathematics, 2006Co-Authors: Lutz AngermannAbstract:AbstractWithin the framework of finite element methods, the paper investigates a general approximation technique for the nonlinear Convective Term of Navier — Stokes equations. The approach is based on an upwind method of the finite volume type. It has been proved that the discrete Convective Term satisfies the well-known collection of sufficient conditions for convergence of the finite element solution. For a particular nonconforming scheme, the assumptions have been verified in detail and the estimate of the semidiscrete velocity error has been proved.
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Error analysis of upwind‐discretizations for the steady‐state incompressible Navier–Stokes equations
Advances in Computational Mathematics, 2000Co-Authors: Lutz AngermannAbstract:Within the framework of finite element methods, the paper investigates a general approximation technique for the nonlinear Convective Term of the Navier–Stokes equations. The approach is based on an upwind method of finite volume type. It is proved that the discrete Convective Term satisfies a well‐known collection of sufficient conditions for convergence of the finite element solution.
Eugenio Oñate - One of the best experts on this subject based on the ideXlab platform.
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a unified monolithic approach for multi fluid flows and fluid structure interaction using the particle finite element method with fixed mesh
Computational Mechanics, 2015Co-Authors: P. Becker, S. R. Idelsohn, Eugenio OñateAbstract:This paper describes a strategy to solve multi-fluid and fluid---structure interaction (FSI) problems using Lagrangian particles combined with a fixed finite element (FE) mesh. Our approach is an extension of the fluid-only PFEM-2 (Idelsohn et al., Eng Comput 30(2):2---2, 2013; Idelsohn et al., J Numer Methods Fluids, 2014) which uses explicit integration over the streamlines to improve accuracy. As a result, the Convective Term does not appear in the set of equations solved on the fixed mesh. Enrichments in the pressure field are used to improve the description of the interface between phases.
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Particle finite element method applied to mould filling
2005Co-Authors: Romain Aubry, Eugenio Oñate, Sergio Rodolpho Idelsohn, Facundo Del PinAbstract:The Particle Finite Element Method is applied to the solution of three dimensional casting processes with solidification problems for a viscous incompressible fluid. One of the most salient features of the method is to treat the classical Navier-Stokes equations in a fully non-linear Lagrangian description, including the large deformations of the fluid during the filling process. The stabilisation of the Convective Term is then completely bypassed. A modified fractional step is presented to ensure mass conservation. A fully thermally coupled flow and the solidification strategy are also introduced.