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Finite element methodology for transient conduction/forced-convection thermal analysisFinite element methodology for steady state thermal analysis of convectively cooled structures has been extended for transient analysis. The finite elements are based on representing the fluid passages by fluid bulk-temperature nodes and fluid-solid interface nodes. The formulation of the finite element equations for a typical flow passage is based on the weighted residual method with upwind weighting functions. Computer implementation of the convective finite element methodology using explicit and implicit time integration algorithms is described. Accuracy and efficiency of the methodology is evaluated by comparisons with analytical solutions and finite-difference lumped-parameter analyses. The comparative analyses demonstrate that finite element conduction/conduction methodology may be used to predict transient temperatures with an accuracy equal or superior to the lumped-parameter finite-difference method.
Document ID
19790054053
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Thornton, E. A.
(Old Dominion University Norfolk, Va., United States)
Wieting, A. R.
(NASA Langley Research Center Structures and Dynamics Div., Hampton, Va., United States)
Date Acquired
August 9, 2013
Publication Date
June 1, 1979
Subject Category
Fluid Mechanics And Heat Transfer
Report/Patent Number
AIAA PAPER 79-1100
Meeting Information
Meeting: American Institute of Aeronautics and Astronautics, Thermophysics Conference
Location: Orlando, FL
Start Date: June 4, 1979
End Date: June 6, 1979
Sponsors: American Institute of Aeronautics, Astronautics
Accession Number
79A38066
Distribution Limits
Public
Copyright
Other

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