TITLE

NUMERICAL STUDY ON THE HIGH-SPEED WATER-ENTRY OF HEMISPHERICAL AND OGIVAL PROJECTILES

AUTHOR(S)
Zitao Guo; Wei zhang; Gang Wei; Peng Ren
PUB. DATE
January 2012
SOURCE
AIP Conference Proceedings;2012, Vol. 1426 Issue 1, p64
SOURCE TYPE
Conference Proceeding
DOC. TYPE
Article
ABSTRACT
The water entry problem is considered as a classic problem which has a long research history; however, projectile water entry is still a difficult problem that has not been completely solved. In this paper, the effects of the projectile nose shape on laws of velocity attenuations for all projectiles were studied by a series of numerical simulations using the AUTODYN-2D. The result showed that the drag coefficient increases monotonically with the initial velocities for an identical projectile and decreases with the CRH values for projectiles at the same velocity. A simple and effective model was proposed to determine the relations between the drag coefficients, nose shape coefficient and initial velocities of projectiles.
ACCESSION #
100955174

 

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