The predation behavior of the pistol shrimp is extremely special, and the predation process will produce a huge popping sound, which has caused extensive research by scholars from all over the world. This article carried out a study on the rapid closing jet mechanism of pistol shrimp’s claws. A theoretical model, based on the hydrodynamic characteristics of seawater and the theory of fluid-structure coupling, was proposed for the interaction between the claws and seawater. A simulation model was established using the finite volume software Fluent, and the rapid closing jet mechanism of pistol shrimp’s claws was verified by using fluid dynamic grid. This article studied the influence of different fluid models on the simulation results. The effects of the claws’ closing angular velocity and angular acceleration on the interaction between the claws and seawater were analyzed, which provides a theoretical basis for the development of new underwater kinetic energy weapons.

中文翻译：

---

基于流体动力网格的手枪虾爪快速闭合射流机理研究

手枪虾的捕食行为极为特殊，捕食过程会产生巨大的爆裂声，这引起了来自世界各地的学者的广泛研究。本文对手枪虾爪的快速闭合射流机理进行了研究。基于海水的水动力特性和流固耦合理论，提出了一种爪与海水相互作用的理论模型。使用有限体积软件Fluent建立了仿真模型，并利用流体动力学网格验证了手枪虾爪的快速闭合射流机理。本文研究了不同流体模型对仿真结果的影响。