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Citation:
　Kangjian Wang,Youran Xia,Qizhuang Kang,et al.Supercavitating Projectile Tail-Slaps Based on a Normal Distribution[J].Journal of Marine Science and Application,2025,(2):398-414.[doi:10.1007/s11804-024-00455-w]
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Supercavitating Projectile Tail-Slaps Based on a Normal Distribution

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Title:
Supercavitating Projectile Tail-Slaps Based on a Normal Distribution
Author(s):
Kangjian Wang1;  Youran Xia2;  Qizhuang Kang2;  Youli Wu1
Affilations:
Author(s):
Kangjian Wang1;  Youran Xia2;  Qizhuang Kang2;  Youli Wu1
1. Aviation Engineering College, Air Force Engineering University, Xi’an, 710038, China;
2. National Key Laboratory of Transient Physics, Nanjing University of Science and Technology, Nanjing, 210094, China
Keywords:
Tail-slaps; Normal distribution; Supercavity; Stability; Supercavitating projectile
分类号:
-
DOI:
10.1007/s11804-024-00455-w
Abstract:
The present study focuses on simulating supercavitating projectile tail-slaps with an analytical method. A model of 3σ-normal distribution tail-slaps for a supercavitating projectile is established. Meanwhile, the σ-κ equation is derived, which is included in this model. Next, the supercavitating projectile tail-slaps are simulated by combining the proposed model and the Logvinovich supercavity section expansion equation. The results show that the number of tail-slaps depends on where the initial several tail-slaps are under the same initial condition. If the distances between the initial several tail-slap positions are large, the number of tail-slaps will considerably decrease, and vice versa. Furthermore, a series of simulations is employed to analyze the influence of the initial angular velocity and the centroid. Analysis of variance is used to evaluate simulation results. The evaluation results suggest that the projectile’s initial angular velocity and centroid have a major impact on the tail-slap number. The larger the value of initial angular velocity, the higher the probability of an increase in tail-slap number. Additionally, the closer the centroid is to the projectile head, the less likely a tail-slap number increase. This study offers important insights into supercavitating projectile tail-slap research.

References:

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Memo

Memo:
Received date:2023-11-1;Accepted date:2023-12-20。
Foundation item:Supported by the National Natural Science Foundation of China (Grant No. 62101590).
Corresponding author:Kangjian Wang,E-mail:wkj_1101@163.com
Last Update: 2025-04-23