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Node Geometries and Conductances in Spacecraft Thermal Models
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English
Abstract
Thermal conductances are computed for relatively simple node geometries that are typical of analytical models of spacecraft. Heat-transfer rates computed with these conductances are compared to heat-transfer rates computed from exact, closed-form mathematical formulas. The comparisons show that most accurate results are obtained with rectangular nodal arrangements and with triangular arrangements with interior angles less than ninety degrees. For rectangles, the conductances obtained from finite-difference, finite-element and centroid methods are identical. For triangles, the finite-element conductances are best. For other quadrilateral arrangements and triangles, the centroid method is the most reliable.
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Authors
Citation
Costello, F. and Costello, C., "Node Geometries and Conductances in Spacecraft Thermal Models," SAE Technical Paper 951698, 1995, https://doi.org/10.4271/951698.Also In
References
- Doenecke J. Schallig R. Zimmerman F. Experience with Finite Element Modelling for Thermal Analysis 24th International Conference on Environmental Systems SAE Technical Paper 941423 June 1994