Accession Number : ADA194477

Title :   The Gradient Method for Interface Tracking.

Descriptive Note : Interim rept. Oct 85-1988,

Corporate Author : NAVAL RESEARCH LAB WASHINGTON DC

Personal Author(s) : Laskey, K J ; Oran, E S ; Boris, J P

PDF Url : ADA194477

Report Date : 31 May 1988

Pagination or Media Count : 34

Abstract : An algorithm is presented for advancing a propagating interface in a numerical simulation and it is applied to the problem of a chemical reaction front. The method identifies large gradients characteristic of the interface and then uses the magnitude of the gradient to specify the amount of material conversion occurring at the interface. In this way the integrated amount of material conversion through the interface can be controlled in a way independent of the detailed local structure of the numerically presented interface. Several test cases demonstrate the ability of the method to propagate an interface with the correct speed and to allow interface merging. The algorithm was developed to allow full use of vector and parallel computer systems.

Descriptors :   *ALGORITHMS, *GRADIENTS, *INTERFACES, *TRACKING, COMPUTERS, CONVERSION, MATERIALS, MATHEMATICAL MODELS, NUMERICAL ANALYSIS, PARALLEL PROCESSORS, PROPAGATION

Subject Categories : Target Direction, Range and Position Finding
      Computer Programming and Software

Distribution Statement : APPROVED FOR PUBLIC RELEASE