Numerical investigation of hypersonic unsteady flow around a spiked blunt-body

被引：8
|
作者：
Ma, Yu [1 ]
Liu, Xiaowei [1 ]
Ou, Ping [1 ]
机构：
[1] China Acad Aerosp Aerodynamiscs, Beijing, Peoples R China
来源：
FRONTIERS IN FLUID MECHANICS RESEARCH | 2015年 / 126卷
关键词：
Hypersonic; Unsteady; Aerospike; DRIVING MECHANISMS; NOSED PROJECTILES; MODE;
D O I：
10.1016/j.proeng.2015.11.204
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The obvious unsteady flow characteristics of the flow field around the spiked blunt-body have negative effect on the drag reduction of vehicle and the thermo-protection of the head. The hypersonic self-sustained oscillatory flow was numerical simulated, and the flow structure and mechanism of the three process of one cycle: collapse, inflation and withhold, were discussed in detail. The correspondence between the drag coefficient curve and the different flow structure was obtained, which will provide basis to the drag reduction and thermo-protection of hypersonic blunt-body vehicle through flow control in the future. (C) 2015 Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
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页码：163 / 168
页数：6
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