Comparative Research on the Characteristic of Aerodynamic Drag Reducing Between the Projectile with Column and Truncated-Cone Base Cavity Shape

DOI

10.2991/icemc-17.2017.158How to use a DOI?

Keywords

Projectile with base cavity; Different base cavity shape; Aerodynamic drag reducing; CFD

Abstract

In order to discuss the effect of the base cavity shape on the projectile aerodynamic force, projectile with different base cavity shape, column and truncated-cone (dilation and shrinkage one, with different incline angle " ", 15ø, 10ø, 5ø, 2ø), was investigated numerically. The distribution of the flow field and the aerodynamic drag of the projectile under a supersonic flow condition were obtained. Results show that the circumfluence plays a key role to effect the aerodynamic drag force of the projectile. Compare with the traditional base cavity shape (column one), dilation truncated-cone shape, increases the aerodynamic drag of the projectile, but shrinkage truncated-cone (any incline angle) is useful to reduce the aerodynamic drag of the projectile. And there is an optimum incline angle of the shrinkage truncated-cone.

Copyright

© 2017, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Ye Zhihong
AU  - Lu Haibo
PY  - 2016/06
DA  - 2016/06
TI  - Comparative Research on the Characteristic of Aerodynamic Drag Reducing Between the Projectile with Column and Truncated-Cone Base Cavity Shape
BT  - Proceedings of the 7th International Conference on Education, Management, Information and Computer Science (ICEMC 2017)
PB  - Atlantis Press
SP  - 779
EP  - 782
SN  - 2352-538X
UR  - https://doi.org/10.2991/icemc-17.2017.158
DO  - 10.2991/icemc-17.2017.158
ID  - Zhihong2016/06
ER  -