Modeling of high-Re, incompressible, non-equilibrium, rough-wall boundary layers for naval applications under NATO-AVT349
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Authors
García-Mayoral, R
Durbin, P
McKeon, B
Piomelli, U
Sandberg, RD
Chung, D
Hutchins, N
Bensow, RE
Knopp, T
Krumbein, A
Roy, CJ
Gargiulo, A
Lowe, KT
Toxopeus, S
Publication Date
2022-01-03Journal Title
AIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2022
Conference Name
AIAA SCITECH 2022 Forum
ISBN
9781624106316
Publisher
American Institute of Aeronautics and Astronautics
Type
Conference Object
This Version
AM
Metadata
Show full item recordCitation
García-Mayoral, R., Durbin, P., McKeon, B., Piomelli, U., Sandberg, R., Chung, D., Hutchins, N., et al. (2022). Modeling of high-Re, incompressible, non-equilibrium, rough-wall boundary layers for naval applications under NATO-AVT349. AIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2022 https://doi.org/10.2514/6.2022-1033
Abstract
This paper discusses the modeling activity of the NATO-STO Research Task Group AVT-349. The aim of this group is to improve the understanding and modeling of boundary layers in the complex flow around water vehicles. As such, the focus is on incompressible, high-Reynolds-number flows that can be subject to non-equilibrium conditions such as strong pressure gradients, three-dimensionality, and surface roughness and heterogeneity. The Task Group has identified a reduced number of simpler problems in which the above conditions can be studied separately and in controlled environments. These include two-dimensional rough-wall boundary layers under both zero and non-zero pressure gradients, two-dimensional smooth-wall boundary layers subject to pressure gradients, and boundary layers around smooth bodies of revolution and three-dimensional obstacles. An experimental and computational data set is being assembled for further analysis and insight into the flow mechanisms involved, as well as the shortcomings of state-of-the-art models. This paper gives an outlook of the modeling effort within the Task Group, as well its different objectives. These include predicting the effect of roughness in equilibrium conditions; assessing the applicability and/or extension of equilibrium models and predictions to non-equilibrium conditions, in particular when outer-layer similarity is lost; the development of near-wall models based on a reduced-order resolvent framework; and the use of machine-aided methods in closure models.
Sponsorship
Engineering and Physical Sciences Research Council (EP/S013083/1)
Identifiers
External DOI: https://doi.org/10.2514/6.2022-1033
This record's URL: https://www.repository.cam.ac.uk/handle/1810/334058
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