Study on the model for shock wave and bubble load of deep-sea explosion

The accurate estimation of deep-sea explosion loads is challenging due to the extreme conditions such as the ultra-hydrostatic pressure. The traditional Geers-Hunter model has acceptable accuracy in calculating underwater explosion load in conventional water depth, but it is not effective in deep-sea explosions. The model established by Zhang is applied to the underwater explosion load calculation in ultra-deep water. The model's accuracy is validated by both the deep-sea and the conventional explosion experimental results published and the Eulerian finite element method numerical results. The results show that, compared to the Geers-Hunter model, the present model can not only accurately calculate the conventional conditions, but also has better accuracy for calculating deep-sea explosion shock wave and bubble load, by providing more accurate shock wave attenuation and smoother connection between shock wave stage and bubble pulsation stage in deep sea.