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The Role of Multiphysics Simulation in Multidisciplinary AnalysisThis article describes the applications of the Spectrum(Tm) Solver in Multidisciplinary Analysis (MDA). Spectrum, a multiphysics simulation software based on the finite element method, addresses compressible and incompressible fluid flow, structural, and thermal modeling as well as the interaction between these disciplines. Multiphysics simulation is based on a single computational framework for the modeling of multiple interacting physical phenomena. Interaction constraints are enforced in a fully-coupled manner using the augmented-Lagrangian method. Within the multiphysics framework, the finite element treatment of fluids is based on Galerkin-Least-Squares (GLS) method with discontinuity capturing operators. The arbitrary-Lagrangian-Eulerian method is utilized to account for deformable fluid domains. The finite element treatment of solids and structures is based on the Hu-Washizu variational principle. The multiphysics architecture lends itself naturally to high-performance parallel computing. Aeroelastic, propulsion, thermal management and manufacturing applications are presented.
Document ID
19980236869
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Rifai, Steven M. (Centric Engineering Systems, Inc. Sunnyvale, CA United States)
Ferencz, Robert M. (Centric Engineering Systems, Inc. Sunnyvale, CA United States)
Wang, Wen-Ping (Centric Engineering Systems, Inc. Sunnyvale, CA United States)
Spyropoulos, Evangelos T. (Centric Engineering Systems, Inc. Sunnyvale, CA United States)
Lawrence, Charles (NASA Lewis Research Center Cleveland, OH United States)
Melis, Matthew E. (NASA Lewis Research Center Cleveland, OH United States)
Date Acquired
September 6, 2013
Publication Date
October 1, 1998
Subject Category
Engineering (General)
Report/Patent Number
E-11373
AIAA Paper 98-4863
NASA/TM-1998-208653
NAS 1.15:208653
Meeting Information
Meeting: Multidisciplinary Analysis and Optimization
Location: Saint Louis, MO
Country: United States
Start Date: September 2, 1998
End Date: September 4, 1998
Sponsors: American Inst. of Aeronautics and Astronautics
Funding Number(s)
PROJECT: RTOP 509-10-31
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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