Results from HPCMP CREATE™-AV kestrel component COFFE for the 6th drag predictionworkshop cases

J. Taylor Erwin, Ryan S. Glasby, Douglas L. Stefanski, Steve L. Karman

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

9 Scopus citations

Abstract

HPCMP CREATE™-AV Kestrel Component COFFE is applied to computationally generate compressible flow-fields for tasks 1–3 of the 6th AIAA Drag Prediction Workshop. In task 1, a series of uniformly refined P1 quadrilateral meshes for a NACA 0012 airfoil is used to carry out a mesh convergence study. For this task, COFFE predicts lift and drag coefficients within the target range by the third coarsest mesh in the series. The objective of task 2 is to calculate the increment in coefficient of drag between the NASA Common Research Model Wing-Body (WB) and Wing-Body-Nacelle-Pylon (WBNP) geometries at a prescribed lift coefficient of 0.5. High quality P1 and P2 tetrahedral meshes with no large angles (max angle < 176 degrees) for both the WB and WBNP geometries were generated by Steve Karman of Pointwise, Inc. COFFE solutions on these meshes exhibit compelling force convergence properties similar to those seen in task 1. Additionally, the P2 results demonstrate increased resolution of flow features and reduced computational cost relative to P1. Task 3 calls for simulation of the WB geometry across a range of angle-of-attack from 2.5–4.0 degrees at 0.25 degree increments. These runs are carried out on P1 tetrahedral meshes, again generated by Steve Karman. COFFE simulations are performed with both the Spalart-Allmaras (SA) and Spalart-Allmaras Quadratic Constitutive Relation (SA-QCR) turbulence models. The results illustrate the impact that turbulence model selection can have on the prediction of aerodynamic forces.

Original languageEnglish
Title of host publicationAIAA SciTech Forum - 55th AIAA Aerospace Sciences Meeting
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
ISBN (Electronic)9781624104473
DOIs
StatePublished - 2017
Externally publishedYes
Event55th AIAA Aerospace Sciences Meeting - Grapevine, United States
Duration: Jan 9 2017Jan 13 2017

Publication series

NameAIAA SciTech Forum - 55th AIAA Aerospace Sciences Meeting

Conference

Conference55th AIAA Aerospace Sciences Meeting
Country/TerritoryUnited States
CityGrapevine
Period01/9/1701/13/17

Funding

Material presented in this paper is a product of the HPCMP CREATE™-AVelement of the Computational Research and Engineering for Acquisition Tools and Environments (CREATE) Program, sponsored by the U.S. Department of Defense HPC Modernization Program Office. In particular, we would like to thank the Air Force Research Laboratory DSRC for the computational resources used in this effort.

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