Accession Number : ADA116322

Title :   Homogeneous and Non-Homogeneous Boundary Value Problems for First Order Linear Hyperbolic Systems Arising in Fluid Mechanics. Part II.

Descriptive Note : Technical summary rept.,


Personal Author(s) : DA Veiga,H Beirao

PDF Url : ADA116322

Report Date : Mar 1982

Pagination or Media Count : 36

Abstract : We prove the existence and the uniqueness of differentiable and strong solutions for a class of boundary value problems for first order linear hyperbolic systems arising from the dynamics of compressible non-viscous fluids. In particular necessary and sufficient conditions for the existence of solutions for the non-homogeneous problem are studied; strong solutions are obtained without this supplementary condition. In particular we don't assume the boundary space to be maximal non-positive and the boundary matrix to be of constant rank on the boundary. In this paper we prove directly the existence of differentiable solutions without resort to weak or strong solutions. An essential tool will be the introduction of a space Z of regular functions verifying not only the assigned boundary conditions but also some suitable complementary boundary conditions.

Descriptors :   *Boundary value problems, *Linear algebraic equations, *Hyperbolas, *Rank order statistics, *Fluid mechanics, Partial differential equations, Constants, Compressive properties, Viscous flow, Dynamics, Boundaries

Subject Categories : Theoretical Mathematics
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE