Numerical analysis of ARJ21 passenger aircraft ditching dynamics using meshless methods

This article delves into the numerical analysis of ARJ21 passenger aircraft ditching dynamics, focusing on the use of meshless methods, particularly the Smoothed Particle Hydrodynamics (SPH) approach. The study validates the SPH method through various numerical examples, including the water entry of a rigid cylinder and wedge, and the application of an active wave absorption system (AWAS) in a wave flume. The article compares the SPH method with traditional Finite Element Method (FEM) and highlights the advantages of SPH in capturing complex fluid-structure interactions. The analysis includes the ditching performance of the ARJ21 regional airliner under both static and wave water surface conditions, providing insights into the aircraft's motion and load characteristics. The study concludes that the SPH method offers a more accurate and efficient approach to simulating aircraft ditching dynamics, particularly in complex scenarios involving waves. The article also discusses the limitations of the current study and suggests future research directions, including the incorporation of fluid-structure interaction with deformable aircraft models.