Application of particle finite element method in axially symmetric fluid-structure interaction problems

摘要

A method for the analysis of the axially symmetric fluid-structure interaction (FSI) problems which has free surfaces, based on the particle finite element method (PFEM), is proposed. To solve the incompressible axially symmetric N-S equations, a stabilized formulation based on the finite calculus procedure is used in the fractional step method. The FSI problem is performed with a staggered scheme. And a flexible boundary is used between the fixed boundary and the moving boundary so as to replace the friction. The reliability of the present method is demonstrated by the comparisons of the results from the classical method and the present results for the recoil absorber simulation. The present method can improve the efficiency and veracity in the design of machines which have free surfaces.