Accession Number : ADA325690

Title :   Advanced Numerical Methods for Three-Dimensional Parallel Hybrid MHD/PIC.

Descriptive Note : Final rept. 1 May 94-31 Oct 96,

Corporate Author : CAMBRIDGE HYDRODYNAMICS INC PRINCETON NJ

Personal Author(s) : McCrory, Robert L. ; Orszag, Steven A. ; Konstantinov, Alexandr ; Staroselsky, Ilya ; Verdon, Charles P.

PDF Url : ADA325690

Report Date : 31 OCT 1996

Pagination or Media Count : 53

Abstract : We have developed, implemented, and applied coupled Eulerican/Lagrangian computational models for efficient parallel numerical simulation of high energy density plasmas. Prototype problems include studies of physical systems encountered in advanced weapons, space propulsion thrusters, pulsed power systems, and other areas of direct interest to the Air Force. The main conclusion of our study is that computationally efficient and physically sound description of nonsteady plasmas typical for these applications is possible using the advanced hybrid MHD/PIC methods developed here. In the first chapter of this report, we outline technical details of our computational approach, including numerical algorithms, physical models, and efficient numerical implementation strategies evaluated/implemented during this work. In the second chapter, we discuss several representative flow simulations obtained using computational models developed as a result of our research. In particular, we have investigated optimal regimes of plasma focusing and energy conversion across a wide range of parameters and devices geometries. Overall, our results show that, with advanced parallel computing platforms, analysis and prototyping of certain plasma device components of interest to the Air Force are amenable to cost efficient numerical simulation.

Descriptors :   *COMPUTERIZED SIMULATION, *PLASMAS(PHYSICS), *EULER EQUATIONS, *MAGNETOHYDRODYNAMICS, ALGORITHMS, OPTIMIZATION, ELECTRON DENSITY, PARALLEL PROCESSING, FLOW VISUALIZATION, HIGH ENERGY, THREE DIMENSIONAL, HIGH DENSITY, MILITARY APPLICATIONS, UNSTEADY FLOW, HYDRODYNAMICS, THRUSTERS, LAGRANGIAN FUNCTIONS, SPACE PROPULSION.

Subject Categories : Computer Programming and Software
      Plasma Physics and Magnetohydrodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE