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Some aspects of algorithm performance and modeling in transient thermal analysis of structuresThe status of an effort to increase the efficiency of calculating transient temperature fields in complex aerospace vehicle structures is described. The advantages and disadvantages of explicit and implicit algorithms are discussed. A promising set of implicit algorithms with variable time steps, known as the GEAR package is described. Four test problems, used for evaluating and comparing various algorithms, were selected and finite element models of the configurations are described. These problems include a space shuttle frame component, an insulated cylinder, a metallic panel for a thermal protection system, and a model of the space shuttle orbiter wing. Results generally indicate a preference for implicit oer explicit algorithms for solution of transient structural heat transfer problems when the governing equations are stiff.
Document ID
19820015605
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Adelman, H. M. (NASA Langley Research Center Hampton, VA, United States)
Haftka, R. T. (Virginia Polytechnic Institute and State Univ. Hampton, VA, United States)
Robinson, J. C. (NASA Langley Research Center)
Date Acquired
August 10, 2013
Publication Date
January 1, 1982
Publication Information
Publication: Computational Aspects of Heat Transfer in Struct.
Subject Category
Fluid Mechanics And Heat Transfer
Accession Number
82N23479
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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