@inproceedings{bf84af1de51b403eb0ae7b5f191645ed,
title = "Effect of Transition Modeling for Analysis of a Slotted, Natural-Laminar-Flow Transonic Truss-BracedWing Aircraft Configuration",
abstract = "The integration of a slotted, natural-laminar-flow (SNLF) airfoil with a transonic trussbraced wing (TTBW) configuration has been shown to offer significant benefits in comparison to other widely implemented designs for commercial transport applications. This work focuses on the computational analysis of the S207 SNLF airfoil and associated TTBW configuration and wind tunnel model. The performance of this airfoil is largely dependent on the duration of laminar flow maintained across the chord length. Thus proper prediction of the transition from laminar to turbulent flow is of top priority. Computations are performed using two closely related Reynolds-averaged Navier-Stokes (RANS) solvers operating on unstructured grids. Results using both the single-equation Menter and Two-Equation Amplification Transport (AFT2) transition prediction models are compared, with the latter demonstrating laminar flow behavior more representative of S207 airfoil design intent. Results acquired for an S207-based wind tunnel model were compared to experimental results and showed notable differences. Efforts to identify sources of these discrepancies lead to further two-dimensional and three-dimensional investigation in which transition prediction model parameters were varied. A complete set of drag polars over a range of Mach numbers was obtained for the S207 TTBWconfiguration demonstrating the ability to predict overall trends in performance with free transition for laminar flow aircraft designs.",
author = "Cody Perkins and Zhi Yang and Dimitri Mavriplis and Coder, {James G.} and Chris Axten and Lawton Shoemake",
note = "Publisher Copyright: {\textcopyright} 2023, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.; AIAA SciTech Forum and Exposition, 2023 ; Conference date: 23-01-2023 Through 27-01-2023",
year = "2023",
doi = "10.2514/6.2023-2454",
language = "English (US)",
isbn = "9781624106996",
series = "AIAA SciTech Forum and Exposition, 2023",
publisher = "American Institute of Aeronautics and Astronautics Inc, AIAA",
booktitle = "AIAA SciTech Forum and Exposition, 2023",
}