Difficulties with Obtuse-Angled Elements in Finite-Element Thermal Models

972537

07/01/1997

Event
International Conference On Environmental Systems
Authors Abstract
Content
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.
Meta TagsDetails
DOI
https://doi.org/10.4271/972537
Pages
7
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.
Additional Details
Publisher
Published
Jul 1, 1997
Product Code
972537
Content Type
Technical Paper
Language
English