Improvement in prediction capability of transonic buffet on NASA-CRM using URANS

Kenta Kumada, Keisuke Sawada

研究成果: Conference contribution

1 被引用数 (Scopus)

抄録

A numerical approach to improve prediction capability of transonic buffet onset based on URANS simulation is investigated. In the present approach, small velocity perturbation is added in every computational cell to force flow instabilities to appear otherwise dissipated in URANS simulation. The computed buffeting flowfield over the NASA-CRM wing is compared with that given by DDES. It is shown that unsteady shock excursions only appear in the outboard wing region in both results for M = 0.847, α = 4.65° and Remac=2.26 × 106. The computed results obtained so far are encouraging that the present unsteady perturbed RANS simulation could predict the buffet onset with reasonable accuracy in less computing time which, however, is yet to be clarified in the future study.

本文言語English
ホスト出版物のタイトル54th AIAA Aerospace Sciences Meeting
出版社American Institute of Aeronautics and Astronautics Inc, AIAA
ISBN(印刷版)9781624103933
DOI
出版ステータスPublished - 2016
イベント54th AIAA Aerospace Sciences Meeting, 2016 - San Diego, United States
継続期間: 2016 1 42016 1 8

出版物シリーズ

名前54th AIAA Aerospace Sciences Meeting
0

Other

Other54th AIAA Aerospace Sciences Meeting, 2016
CountryUnited States
CitySan Diego
Period16/1/416/1/8

ASJC Scopus subject areas

  • Aerospace Engineering

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