|
| Research on a new method of bubble jet load in underwater explosion |
| Received:May 24, 2020 Revised:June 28, 2020 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20200524001 |
| KeyWord:underwater explosion bubble collapse multicomponent flow interface compression water jet |
| Author | Institution |
| 余俊 |
中国船舶科学研究中心, 无锡 |
| 刘国振 |
中国船舶科学研究中心, 无锡 |
| 汪俊 |
中国船舶科学研究中心, 无锡 |
| 王海坤 |
中国船舶科学研究中心, 无锡 |
|
| Hits: 698 |
| Download times: 492 |
| Abstract: |
| Due to the nonlinear effects such as strong impact and complex motion of a multiphase interface,the current calculation method of bubble motion in underwater explosion cannot provide reliable motion characteristics and load forms of a bubble jet.In this work,the interface function and interface density compression technique are introduced on the base of the five-equation model,and a fifth-order accuracy Weighted Essentially Non-Oscillation (WENO) reconstruction and HLLC approximate Riemann solver are employed to discretize the temporal term,and the third-order TVD Runge-Kutta scheme is used to discretize the temporal term.It is found that this method can improve the accuracy and capture the typical evolution process such as the generation and development of a water jet and the impact of a water hammer.The calculation results show that the model in this paper can effectively simulate the collapse process of underwater explosion bubbles near the wall,and preliminarily reveal the characteristics of water jet load caused by bubble collapse,which can provide support for the research of water jet generation mechanism and damage effect. |
|
|
|