Presentation Information
[250201-01-01]The improvement of SPH method and its applications in the field of civil aviation
Prof. Fei Xu (Northwestern Polytechnical University)
In recent years, the Smoothed Particle Hydrodynamics (SPH) method has advanced in algorithms and applications. To improve the computational accuracy, stability and efficiency, several numerical algorithms are proposed. Based on Finite Particle Method (FPM), a specified FPM is derived by matrix decomposition, which possesses simple calculation with high efficiency. A generalized FPM algorithm is studied, which has no extra limit on the number of particles and may approach high-order accuracy. Secondly, a DSFPM algorithm is presented to obtain high accuracy at interfaces among multi-material problems. Further, the idea of SFPM is introduced into Total Lagrangian SPH to describe large deformation of solid.
The above improved algorithms with recent progress of SPH in fluid, such as δ-SPH, GSPH, provide opportunities to solve complex problems in civil aviation. To meet the airworthiness requirements, these improved methods can be used to evaluate crucial and safety problems, such as the water spray of airplane tires running on the contaminated runway, the airworthiness assessments of aircraft ditching, the bird strikes and discrete fragment impact, etc. Furthermore, other Fluid Solid Interaction problems related to the airplane flying, such as oil tank sloshing, oil pump operation can be simulated. As artificial intelligence and machine learning technologies develop, the SPH method will provide an insightful contribution to engineering problems.
The above improved algorithms with recent progress of SPH in fluid, such as δ-SPH, GSPH, provide opportunities to solve complex problems in civil aviation. To meet the airworthiness requirements, these improved methods can be used to evaluate crucial and safety problems, such as the water spray of airplane tires running on the contaminated runway, the airworthiness assessments of aircraft ditching, the bird strikes and discrete fragment impact, etc. Furthermore, other Fluid Solid Interaction problems related to the airplane flying, such as oil tank sloshing, oil pump operation can be simulated. As artificial intelligence and machine learning technologies develop, the SPH method will provide an insightful contribution to engineering problems.