Wall-modeled large-eddy simulation of transonic buffet over a supercritical airfoil at high reynolds number

Yuma Fukushima, Soshi Kawai

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

In this study, the wall-modeled large-eddy simulation (LES) of transonic buffet phenomena over the OAT15A supercritical airfoil is conducted. The computational results are compared with zonal detached eddy simulation (DES) and experiment. By using the wall-modeled LES, the buffet onset is successfully predicted. The small separation near the trailing edge is also accurately estimated with buffet phenomena. Velocity properties show good agreement with experiment except the region in which the shock wave moves. From the trace of the shock wave movement, the buffet frequency which nearly equals to experimental value is obtained. The self-sustained oscillation mechanisms are investigated from the computational results. As a results, Lee’s acoustic feedback loop model cannot predict the buffet frequency. On the other hand, the possibility of the proposed model is confirmed.

Original languageEnglish
Title of host publicationAIAA SciTech Forum - 55th AIAA Aerospace Sciences Meeting
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
ISBN (Electronic)9781624104473
DOIs
Publication statusPublished - 2017
Event55th AIAA Aerospace Sciences Meeting - Grapevine, United States
Duration: 2017 Jan 92017 Jan 13

Publication series

NameAIAA SciTech Forum - 55th AIAA Aerospace Sciences Meeting

Other

Other55th AIAA Aerospace Sciences Meeting
CountryUnited States
CityGrapevine
Period17/1/917/1/13

ASJC Scopus subject areas

  • Aerospace Engineering

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