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A numerical study of flow over supersonic projectile under heavy rain

Authors :
Jingtong Wu
Yan Wu
Yingkun Li
Jinsheng Xu
Xiong Chen
Source :
AIP Advances, Vol 13, Iss 11, Pp 115119-115119-10 (2023)
Publication Year :
2023
Publisher :
AIP Publishing LLC, 2023.

Abstract

This paper presents a computational fluid dynamics study of morphology and structure dynamics of the flow over a supersonic secant-ogive cylinder boat tail projectile under heavy rain. The discrete phase model is employed to approximate the process of droplet–particle collision with the projectile wall and the formation of a liquid film. The simulation results indicate that at certain angles of attack, rain impact decreases lift coefficient of projectile by as much as 14.9%, as the wall pressure distribution is distinctly reformed. Moreover, the rain condition induces the formation of a liquid film on the front end of the projectile, as the angle of attack increases, the stability of this liquid film gradually improves, while its thickness and coverage rise to the peak values and then decrease. On the projectile’s trailing half, however, the liquid film developed a watery pattern. The collision of liquid droplets causes momentum loss to the projectile, while an unstable liquid film tends to exacerbate aerodynamic performance loss, a stable liquid film would mitigate the performance loss.

Subjects

Subjects :
Physics
QC1-999

Details

Language :
English
ISSN :
21583226
Volume :
13
Issue :
11
Database :
Directory of Open Access Journals
Journal :
AIP Advances
Publication Type :
Academic Journal
Accession number :
edsdoj.08f840b0e7724c369e30f5474c2f885e
Document Type :
article
Full Text :
https://doi.org/10.1063/5.0171938