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Now showing items 41-47 of 47

#### Unsteady mixed flows in non uniform closed water pipes: a Full Kinetic Approach

(2014-12-31)

We recall the Pressurized and Free Surface model constructed for the modeling of unsteady mixed flows in closed water pipes where transition points between the free surface and pressurized flow are treated as a free boundary ...

#### Boundary stabilization of numerical approximations of the 1-D variable coefficients wave equation: A numerical viscosity approach

(2014-12-31)

In this paper, we consider the boundary stabilization problem associated to the 1- d wave equation with both variable density and diffusion coefficients and to its finite difference semi-discretizations. It is well-known ...

#### Null controllability of a system of viscoelasticity with a moving control

(2014-12-31)

In this paper, we consider the wave equation with both viscous Kelvin-Voigt and frictional damping as a model of viscoelasticity in which we incorporate an internal control with a moving support. We prove the null ...

#### Attractors met X-elliptic operators

(2014-12-31)

We consider degenerate parabolic and damped hyperbolic equations involving an operator L, that is X-elliptic with respect to a family of locally Lipschitz continuous vector fields X={X1,... Xm}. The local well-posedness ...

#### Parallel Schwarz wave form relaxation algorithm for an n-dimensional semilinear heat equation

(2014-12-31)

We present in this paper a proof of well-posedness and convergence for the parallel Schwarz Waveform Relaxation Algorithm adapted to an N-dimensional semilinear heat equation. Since the equation we study is an evolution ...

#### Large-time behavior of some numerical schemes: application to the sonic-boom phenomenon

(2014-12-10)

In this thesis we highlight the necessity of employing numerical schemes that preserve the large-time dynamical properties of the continuous system. We focus on Burgers- like equations, which are well known to develop ...

#### About the controlability of some equations in Cardiology, Biology, Fluid Mechanics, and Viscoelasticity

(2014-09-30)

In this thesis we analyze the properties of controllability and observability for selected partial differential equations which model various phenomena in cardiology, biology, fluid mechanics and viscoelasticity.
We begin, ...