高解像度DDESによる低速バフェット解析

第51回流体力学講演会/第37回航空宇宙数値シミュレーション技術シンポジウム (2019年7月1日-3日. 早稲田大学早稲田キャンパス国際会議場), 新宿区, 東京

51st Fluid Dynamics Conference / the 37th Aerospace Numerical Simulation Symposium (July 1-3, 2019. International Conference Center, Waseda University), Shinjuku-ku, Tokyo, Japan

The Delayed Detached-Eddy-Simulation [Spalart et al., Theor. Comput. Fluid Dyn. 2006] has been improved [coined as “HR (High-Resolution)-DDES”], and applied to an unsteady turbulence simulation of a low speed buffet around a whole aircraft (NASA Common Research Model). The HR-DDES is not a single turbulence model. It is instead a framework comprised of DDES with calibrated turbulence model coefficients and improved LES (Large-Eddy-Simulation) / RANS (Reynolds-Averaged-Navier-Stokes) transition. As a result, the pressure distributions over the main wing are dramatically improved especially at 13.1% cross-section from the center-plane. The HR-DDES serves as a good alternative to the conventional counterpart for practitioners/users/aeronautical engineers without major coding or code modifications.

形態: カラー図版あり

Physical characteristics: Original contains color illustrations

資料番号: AA1930011009

レポート番号: JAXA-SP-19-007