Difficulties with Obtuse-Angled Elements in Finite-Element Thermal Models 972537
Thermal conductances are computed by finite-element techniques for typical triangular elements.. Heat-transfer rates computed with these conductances are compared to heat-transfer rates computed from exact, closed-form mathematical formulas and from refined models. The comparisons show that significant simulation errors can occur in triangular elements that have an internal angle greater than 90 degrees. An alternative, centroid method is shown to give smaller errors by some measures and in some cases but larger errors in most cases.
Citation: Costello, F. and Costello, C., "Difficulties with Obtuse-Angled Elements in Finite-Element Thermal Models," SAE Technical Paper 972537, 1997, https://doi.org/10.4271/972537. Download Citation
Author(s):
Frederick A. Costello, Christopher F. Costello
Affiliated:
Frederick A. Costello, Inc.
Pages: 7
Event:
International Conference On Environmental Systems
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
SAE 1997 Transactions - Journal of Aerospace-V106-1
Related Topics:
Heat transfer
Simulation and modeling
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