Accession Number : ADP004905

Title :   Optimal Control Techniques for Computing Stationary Flows of Viscoelastic Fluids with Memory,

Corporate Author : WISCONSIN UNIV-MADISON MATHEMATICS RESEARCH CENTER

Personal Author(s) : Le Tallec,P.

Report Date : FEB 1985

Pagination or Media Count : 11

Abstract : This article considers the problem of computing the stationary flows of a viscoelastic fluid with memory flowing through a given domain. The proposed numerical technique is based on optimal control techniques, which replace the original equations of the problem by a minimization problem to be solved by a conjugate gradient algorithm. Such techniques are very powerful and can handle equations which change type, provided that, as done here, one uses an adequate preconditioning operator and that one computes efficiently the gradient of the function to be minimized.

Descriptors :   *NUMERICAL METHODS AND PROCEDURES, *COMPUTATIONS, *FLUID FLOW, VISCOELASTICITY, EQUATIONS

Distribution Statement : APPROVED FOR PUBLIC RELEASE