Higher Order Common Platform for Complex Multi-Physics Computation
Abstract
The objective of Phase-I of this project was to demonstrate feasibility of exploiting the commonality in the structure of the governing equations in fluid dynamics and electromagnetics to develop a higher order Magneto-Gas-Dynamics (MGD) solver, based on the 3D, unstructured, parallel discontinuous Galerkin (DG) CEM (Computational ElectroMagnetics) code TEMPUS under development at HyPerComp. This objective was met by demonstrating conversion of the TEMPUS code, to an inviscid flow solver with minimal modifications. The only required changes to the code were the incorporation of appropriate flux computations and boundary conditions, while the structure of the code remained essentially same. This code conversion was preceded by the development of an implicit scheme based on a novel linearization technique for the flux terms, and the application of the DG scheme to classical problems in 1D and quasi 1D. The 1D demonstration included extension of the DG formulation to MGD equations, and successful application of the scheme to the Brio-Wu shock-tube problem and Wu's intermediate shock problem. It has been concluded that a strong platform for high order multi-physics computations may be built on the code structure and formulation developed in this activity, with extensions to elliptic and parabolic differential equation systems.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 2003
- Accession Number
- ADA421001
Entities
People
- Dale K. Ota
- Ramakanth Munipalli
- S. V. Ramakrishnan
- Vijaya Shankar