Sensitivity of the convective heat transfer coefficient to the uncertain surface roughness characteristics

Ignatowicz, Kevin, Morency, François and Beaugendre, Héloïse. 2021. « Sensitivity of the convective heat transfer coefficient to the uncertain surface roughness characteristics ». In 55th 3AF International Conference on Applied Aerodynamics : AERO2020 (Poitiers, France - En ligne, Apr. 12-14, 2021) Association Aéronautique et Astronautique de France (3AF).

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Abstract

Numerically predicting the heat transfer on a rough surface is a challenge. Modelling a rough surface without adding a thermal correction model tends to over predict the heat transfer coefficient in a RANS simulation. Thermal correction models must be added to compute the effect of roughness elements, described by their height, which allows computing the equivalent sand grain roughness, on the thermal boundary layer. The uncertainties on the heat transfer can be critical in inflight icing studies, where the early stages of icing increase the surface roughness. The objective of the paper is to study the sensitivity of the heat transfer on a rough flat plate to the roughness characteristics. The analysis, using the generation of metamodels and the calculation of sensitivity indexes, will allow determining which characteristics influence the most the heat transfer coefficient variability. After detailing the metamodeling methodology, metamodels predictions obtained and sensitivity indexes calculated will be exposed.

Item Type:	Conference proceeding
Additional Information:	Identifiant de l'article: FP85-AERO2020-ignatowicz
Professor:	Professor Morency, François
Affiliation:	Génie mécanique
Date Deposited:	07 Jun 2021 20:27
Last Modified:	21 Jun 2021 15:44
URI:	https://espace2.etsmtl.ca/id/eprint/22750

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