Effect of Turbulence Models on Aerodynamic Characteristics of Slender Body with Protuberance
| Autor: | TSUTSUI, Fumiya, KITAMURA, Keiichi, NONAKA, Satoshi |
|---|---|
| Jazyk: | japonština |
| Rok vydání: | 2022 |
| Zdroj: | 宇宙航空研究開発機構特別資料: 第53回流体力学講演会/第39回航空宇宙数値シミュレーション技術シンポジウム論文集 = JAXA Special Publication: Proceedings of the 53rd Fluid Dynamics Conference / the 39th Aerospace Numerical Simulation Symposium. :225-233 |
| ISSN: | 2433-2232 |
| Popis: | 第53回流体力学講演会/第39回航空宇宙数値シミュレーション技術シンポジウム (2021年6月30日-7月2日. 日本航空宇宙学会 : 宇宙航空研究開発機構(JAXA)オンライン会議) The 53rd Fluid Dynamics Conference / the 39th Aerospace Numerical Simulation Symposium (June 30 - July 2, 2021. The Japan Society for Aeronautical and Space Sciences : Japan Aerospace Exploration Agency (JAXA), Online meeting) A slender-bodied vehicle with asymmetrically arranged protuberance generates strong side force due to asymmetric vortices, even at a low angle-of-attack. We investigated effects of the well-known RANS turbulence models [SA-R (C(sub rot)=0.0, 1.0, and 2.0), SST, and SST-2003] by comparing the numerically obtained side force values on supersonic slender-body, along with the flow structure. As a result, all the SA-R models showed good agreement with the experiment regardless of the C(sub rot) (which controls the degree of modification from the original SA model), although a separation point on the protuberance side slightly changed depending on the C(sub rot) value. On the other hand, as for the SST models, when the vorticity was used to evaluate eddy viscosity (original SST) the side force exhibit 44% deviation from the experiment, whereas SST-2003, in which the strain rate was employed instead, significantly reduced the discrepancy to 0.7%. 形態: カラー図版あり Physical characteristics: Original contains color illustrations 資料番号: AA2130027021 レポート番号: JAXA-SP-21-008 |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|