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Mostrando ítems 1-10 de 91
Artículo
Field-design optimization with triangular heliostat pods
(American Institute of Physics, 2016-05)
In this paper the optimization of a heliostat field with triangular heliostat pods is addressed. The use of structures which allow the combination of several heliostats into a common pod system aims to reduce the high ...
Artículo
Some existence and uniqueness results for a time-dependent coupled problem of the Navier-Stokes kind
(World Scientific, 1998)
In this paper, we consider some systems which are close to the instationary Navier-Stokes equations. The structure of these systems is the following: An (N +1)-dimensional equation for motion (including the incompressibility ...
Artículo
An optimal control problem for a generalized Boussinesq model: The time dependent case
(Universidad Complutense de Madrid, 2007)
We consider an optimal control problem governed by a system of nonlinear partial differential equations modelling viscous incompressible flows submitted to variations of temperature. We use a generalized Boussinesq ...
Artículo
Time and space parallelization of the Navier-Stokes equations
(Sociedade Brasileira de Matemática Aplicada e Computacional, 2005)
In this paper, we will be mainly concerned with a parallel algorithm (in time and space) which is used to solve the incompressible Navier-Stokes problem. This relies on two main ideas: (a) a splitting of the main differential ...
Artículo
On the controllability of the heat equation with nonlinear boundary Fourier conditions
(Elsevier, 2004-01-20)
In this paper we analyze the approximate and null controllability of the classical heat equation with nonlinear boundary conditions of the form ∂y ∂n + f(y) = 0 and distributed controls, with support in a small set. We ...
Artículo
Sobre la aproximación numérica de un problema de control geométrico
(Universitat de Barcelona, 1982)
The purpose of this paper is to introduce a new method for solving an optimum design problem: determining the aerodynamic body of minimum-drag profile at constant velocity in a viscous incompressible fluid. The stationnary ...
Artículo
On the approximate and null controllability of the Navier-Stokes equations
(Society for Industrial and Applied Mathematics, 1999-06)
This paper presents some known results on the approximate and null controllability of the Navier–Stokes equations. All of them can be viewed as partial answers to a conjecture of J.-L. Lions.
Artículo
Bi-objective optimal control of some PDEs: Nash equilibria and quasi-equilibria
(E.D.P. Sciences, 2021-05-05)
This paper deals with the solution of some multi-objective optimal control problems for several PDEs: linear and semilinear elliptic equations and stationary Navier-Stokes systems. Speci - cally, we look for Nash equilibria ...
Artículo
On the numerical approximation of a geometric control problem
(Universidad de Barcelona, 1982-09-15)
The purpose of this paper is to introduce a new method for solving an optimun design problem: determining the aerodynamic body of minimun-drag profile at constant velocity in a viscous incompressible fluid. The stationnary ...
Artículo
On some geometric inverse problems for nonscalar elliptic systems
(Elsevier, 2020-07-02)
In this paper, we consider several geometric inverse problems for linear elliptic systems. We prove uniqueness and stability results. In particular, we show the way that the observation depends on the perturbations of the ...