Open AccessDetached eddy simulation of the release progress of moving body separating from a cavity
Author(s) -
Huan Li,
Hailiang Jia,
Pengcheng Cui,
Jiangtao Chen,
Guocheng Zhou,
Yaobing Zhang
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1985/1/012030
Subject(s) - mechanics , large eddy simulation , detached eddy simulation , turbulence , flow (mathematics) , aerodynamics , moment (physics) , solver , physics , flow separation , wing , computer simulation , simulation , classical mechanics , engineering , mathematics , reynolds averaged navier–stokes equations , thermodynamics , mathematical optimization
Aiming at the complex unsteady flow during the release progress of moving body separating from a cavity, combined with the overlapping grid technique and Spalart Allmaras equation turbulence model, the three-dimensional unsteady flow solver is presented. On this basis, the validity of the simulation method is verified by M219 cavity example and WPFS example. Then the released moving body is conducted with SA-IDES. The research results show that upward force and pitch down moment of the moving body are affected by the fluctuating flow near the cavity and the SA – DES simulation is good in predicting high frequency flow. In conclusion, the outside shear layer and the inside fluctuating flow of the cavity has a significant impact on the aerodynamic loads and the trajectory of the moving body during the initial separation stage.