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Development of an integrated BEM approach for hot fluid structure interactionA comprehensive boundary element method is presented for transient thermoelastic analysis of hot section Earth-to-Orbit engine components. This time-domain formulation requires discretization of only the surface of the component, and thus provides an attractive alternative to finite element analysis for this class of problems. In addition, steep thermal gradients, which often occur near the surface, can be captured more readily since with a boundary element approach there are no shape functions to constrain the solution in the direction normal to the surface. For example, the circular disc analysis indicates the high level of accuracy that can be obtained. In fact, on the basis of reduced modeling effort and improved accuracy, it appears that the present boundary element method should be the preferred approach for general problems of transient thermoelasticity.
Document ID
19910006183
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Dargush, G. F. (State Univ. of New York Buffalo, NY, United States)
Banerjee, P. K. (State Univ. of New York Buffalo, NY, United States)
Shi, Y. (State Univ. of New York Buffalo, NY, United States)
Date Acquired
September 6, 2013
Publication Date
November 1, 1990
Subject Category
Fluid Mechanics And Heat Transfer
Report/Patent Number
NASA-CR-187675
NAS 1.26:187675
Accession Number
91N15496
Funding Number(s)
CONTRACT_GRANT: NAG3-712
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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