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Evaluation of an adaptive unstructured remeshing technique for integrated fluid-thermal-structural analysisAn adaptive unstructured remeshing technique is evaluated for integrated fluid-thermal-structural analysis. The technique is combined with the finite element method to solve: (1) the Navier-Stokes equations for high-speed compressible flow; (2) the energy equation for the structural-thermal response; and (3) the quasi-static equilibrium equations for the structural response. The remeshing technique and the analysis solution procedure are described. The effectiveness of the approach is evaluated with two application studies. The flow analysis of Mach 8 shock-shock interference on a three-inch-diameter cylinder is used as the first application study to demonstrate the capability of the remeshing technique and to examine proper remeshing indicators for the inviscid and boundary layer regions. The applicability of the approach for the thermal and structural analyses of the structure is evaluated in the second application study of a 0.25-inch-diameter convectively cooled leading edge subjected to intense aerodynamic heating. Issues associated with remeshing indicators for thermal stress problems are identified.
Document ID
19900011110
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Dechaumphai, Pramote (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
September 6, 2013
Publication Date
February 1, 1990
Subject Category
Structural Mechanics
Report/Patent Number
NASA-TM-102611
NAS 1.15:102611
Meeting Information
Meeting: AIAA 28th Aerospace Sciences Meeting
Location: Reno, NV
Country: United States
Start Date: January 8, 1990
End Date: January 11, 1990
Accession Number
90N20426
Funding Number(s)
PROJECT: RTOP 506-43-31-05
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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