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Study of Laminar-Turbulent Transition Modeled by Amplification Factor Transport Within the LAVA SolverThe Amplification Factor Transport (AFT) transition model proposed by Coder and Maughmer is implemented in the unstructured and curvilinear Reynolds-Averaged Navier-Stokes (RANS) solvers of the Launch Ascent and Vehicle Aerodynamics (LAVA) platform. It is coupled to the Spalart-Allmaras (SA) turbulence model through a modified intermittency variable. As part of the model verification and validation phase, laminar-turbulent transition is studied over 2D flat plates, wind turbine and general aviation airfoils, as well as a 3D inclined prolate spheroid and the JAXA Standard Model (JSM). This work will analyze the sensitivity of the results to grid refinement, grid paradigm, flow conditions and numerical schemes. The numerical efficiency of the unstructured and curvilinear solvers will be compared and convergence acceleration techniques will be explored to address a broad range of aerodynamics applications.
Document ID
20190028873
Acquisition Source
Ames Research Center
Document Type
Conference Paper
External Source(s)
http://aviation.aiaa.org/
Authors
Denison, M. F. (NASA Ames Research Center Moffett Field, CA, United States)
Stich, G. D. (Science and Technology Corp. Moffett Field, CA, United States)
Duensing, J. C. (Science and Technology Corp. Moffett Field, CA, United States)
Kiris, C. C. (NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
August 9, 2019
Publication Date
June 25, 2018
Subject Category
Aerodynamics
Report/Patent Number
ARC-E-DAA-TN49782
Meeting Information
Meeting: 2018 AIAA Aviation Forum
Location: Atlanta, GA
Country: United States
Start Date: June 25, 2018
End Date: June 29, 2018
Sponsors: American Institute of Aeronautics and Astronautics (AIAA)
Funding Number(s)
CONTRACT_GRANT: NNA16BD60C
Distribution Limits
Public
Copyright
Public Use Permitted.
Technical Review
NASA Peer Committee

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