Recent Advances in Efficient and Robust Two-Way Coupling Between FEA and CFD PUBLIC ACCESS

[+] Author Affiliations
Michael J. Raw

ANSYS, Inc., Canada

Paper No. PVP2005-71798, pp. 327; 1 page
  • ASME 2005 Pressure Vessels and Piping Conference
  • Volume 4: Fluid Structure Interaction
  • Denver, Colorado, USA, July 17–21, 2005
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 0-7918-4189-8 | eISBN: 0-7918-3763-7
  • Copyright © 2005 by ASME


The established FEA and CFD codes ANSYS and CFX have been coupled to support transient and strongly coupled interaction between structures and fluids analyses. The presentation will outline the technical approaches used for the communications technology, data interpolation, non-linear convergence of the implicit condition, and the mesh morphing problem. For the communications a TCP/IP socket communication system has been used that is very efficient and very portable, including within parallelized simulations. The data interpolation issue is addressed to ensure full conservation of forces and energy flow. For stability under highly interacting or non-linear conditions, the fully coupled implicit problem must be solved, or converged, at each time step. The algorithm that manages this iteration and data exchange is explained. Finally, some of the approaches used to smoothly morph the moving mesh are detailed. These capabilities are all supported in the ANSYS 10.0 software release (summer 2005).

Copyright © 2005 by ASME
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