Twodimensional implicit timedependent calculations on adaptive unstructured meshes with time evolving boundaries Academic Article uri icon

abstract

  • AbstractAn implicit multigriddriven algorithm for twodimensional incompressible laminar viscous flows has been coupled with a solution adaptation method and a mesh movement method for boundary movement. Timedependent calculations are performed implicitly by regarding each time step as a steadystate problem in pseudotime. The method of artificial compressibility is used to solve the flow equations. The solution mesh adaptation method performs local mesh refinement using an incremental Delaunay algorithm and mesh coarsening by means of edge collapse. Mesh movement is achieved by modeling the computational domain as an elastic solid and solving the equilibrium equations for the stress field. The solution adaptation method has been validated by comparison with experimental results and other computational results for low Reynolds number flow over a shedding circular cylinder. Preliminary validation of the mesh movement method has been demonstrated by a comparison with experimental results of an oscillating airfoil and with computational results for an oscillating cylinder. Copyright 2005 John Wiley & Sons, Ltd.

published proceedings

  • International Journal for Numerical Methods in Fluids

author list (cited authors)

  • Lin, P. T., Baker, T. J., Martinelli, L., & Jameson, A.

citation count

  • 11

publication date

  • January 2006

publisher