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Volume 32 Issue S1
Mar.  2025
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LIU Li-ling, YI Li-qing, WEI Yong-tao. Equilibrium Iteration Algorithm for Analyzing Fluid-Structure Problems Using ALE Finite Element Method[J]. Nuclear Power Engineering, 2011, 32(S1): 137-140.
Citation: LIU Li-ling, YI Li-qing, WEI Yong-tao. Equilibrium Iteration Algorithm for Analyzing Fluid-Structure Problems Using ALE Finite Element Method[J]. Nuclear Power Engineering, 2011, 32(S1): 137-140.

Equilibrium Iteration Algorithm for Analyzing Fluid-Structure Problems Using ALE Finite Element Method

  • Received Date: 2011-05-03
  • Rev Recd Date: 2011-05-17
  • Available Online: 2025-03-08
  • Based on the Galerkin/Least squares finite element method under arbitrary Lagrange-Euler description,the equilibrium iteration algorithm in which forces applied by fluids onto rigid bodies are treated as converging parameter is established for analyzing the fluid-solid interaction problems,and a new algorithm of mesh updating on the basis of pseudo elasticity method is proposed which can maintain fluid elements sides straight with mid-nodes coinciding with the center of element sides during mesh motion.The numerical example is about a mass-spring system vibrating freely in closed fluids which is analyzed with the method proposed,and the equivalent damping ratio,added-mass introduced by fluid-solid interaction are obtained as well as the streamlines of flow and pressure contours.

     

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