Open AccessNumerical simulation of dynamic multi-body separation flowfields
Author(s) -
Bing Han,
Zhenxun Gao,
Changyin Jiang
Publication year - 2020
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 - 10.1088/1742-6596/1509/1/012023
Subject(s) - separation (statistics) , shock (circulatory) , mechanics , computer simulation , angle of attack , flow (mathematics) , process (computing) , separation process , computer science , aerospace engineering , simulation , physics , aerodynamics , engineering , medicine , machine learning , chemical engineering , operating system
In this paper, three-dimensional unsteady Navier-Stokes equations coupled with six-degree-of-freedom equations are solved numerically to simulate the process of multi-body separation in the condition of high speed and high altitude. Overset grids are adopted to deal with the relative motion between two different parts. In order to study the security of separating process, the trajectories and attitudes of different parts are calculated and the characteristics of flow field during separation are analyzed carefully. Different initial angles of attack are considered during the simulation and its influence on the separation process is analyzed. The result shows that the initial angle of attack has significant impact on the flow field. Large angle of attack would cause shock/shock interactions between the two parts, threatening the safety of the separating process.