Large-Eddy Simulation of the unsteady supersonic flow around a Mars entry capsule at different angles of attack

被引：10

作者：

Placco, Luca ^{[1
]}

Cogo, Michele ^{[1
]}

Bernardini, Matteo ^{[3
]}

Aboudan, Alessio ^{[1
]}

Ferri, Francesca ^{[1
]}

Picano, Francesco ^{[1
,2
]}

机构：

[1] Univ Padua, Ctr Ateneo Studi & Att Spaziali Giuseppe Colombo C, via Venezia 15, I-35131 Padua, Italy

[2] Univ Padua, Dept Ind Engn, Via Venezia 1, I-35131 Padua, Italy

[3] Sapienza Univ Roma, Dept Mech & Aerosp Engn, Via Eudossiana 18, I-00184 Rome, Italy

来源：

AEROSPACE SCIENCE AND TECHNOLOGY | 2023年 / 143卷

关键词：

Large Eddy Simulation; Entry capsule; Unsteady; Supersonic flows; Modal analysis; VORTEX STRUCTURES; DETACHED SHOCK; BLUFF BODY; WAKE FLOW; PROBE;

D O I：

10.1016/j.ast.2023.108709

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

Time-evolving high-fidelity simulations of an entry capsule in a supersonic flight regime have been performed at different angles of attack (0 degrees, 5 degrees, 10 degrees and 15 degrees) in Mars' atmosphere. The aim is to contribute to the understanding of the critical unsteady phenomena that arise during the descent phase, gaining insights on the optimal design choices to ensure a safe atmospheric entry and a successful landing procedure. Turbulent structures effectively solved via Implicit Large-Eddy Simulation technique allow us to evaluate the flow properties and the capsule's response both in space and time, placing special attention to the analysis of the turbulent motions responsible for the oscillatory and unsteady dynamics. Ultimately, Proper Orthogonal Decomposition is employed to provide a low-order model of the wake dynamics.

引用

页数：14

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