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Citation:
　Chol Jun Pak,Min Hyok Jon,Yong Gwang Ri,et al.Numerical Investigation on Water Entry of Two-dimensional Wedges with a Moving Particle Semi-implicit Method[J].Journal of Marine Science and Application,2026,(1):327-341.[doi:10.1007/s11804-025-00615-6]
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Numerical Investigation on Water Entry of Two-dimensional Wedges with a Moving Particle Semi-implicit Method

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Title:
Numerical Investigation on Water Entry of Two-dimensional Wedges with a Moving Particle Semi-implicit Method
Author(s):
Chol Jun Pak;  Min Hyok Jon;  Yong Gwang Ri;  Ryong Il Ju
Affilations:
Author(s):
Chol Jun Pak;  Min Hyok Jon;  Yong Gwang Ri;  Ryong Il Ju
Faculty of Naval Architecture and Ocean Engineering, Kim Chaek University of Technology, Pyongyang, 999093, Democratic People’s Republic of Korea
Keywords:
Water entry|Moving particle semi-implicit method|Hydrodynamic load|Free falling|Fluid-solid coupling
分类号:
-
DOI:
10.1007/s11804-025-00615-6
Abstract:
The water entry problem is an important issue in the field of marine engineering, and predicting the behavior of a body entering water is extremely difficult because of water’s strong nonlinearity. In this study, we investigate hydrodynamic load acting on a two-dimensional (2D) wedge during water entry. The adopted approach is the moving particle semi-implicit (MPS) method, which is widely utilized in the simulation of nonlinear free surface flow. Moreover, two techniques to enhance the performance of MPS are suggested and a symmetry domain technique for reducing the computational cost is also proposed. Additionally, a fluid-solid coupling algorithm using the MPS method is suggested. Several cases are numerically investigated to verify the proposed method, and its performance is verified through the simulation of hydrostatic pressure and dam break. Furthermore, 2D wedge water entry problems with symmetric or asymmetric characteristics are studied using the proposed MPS method and compared with some experimental and previous numerical studies. The results show that the MPS with the proposed schemes can provide a reliable numerical prediction for water entry problems.

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Memo

Memo:
Received date:2024-11-27;Accepted date:2025-1-26。<br>Corresponding author:Chol Jun Pak,E-mail:pcj83427@star-co.net.kp
Last Update: 2026-06-08