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A Framework for the Numerical Simulation of Early Stage Aneurysm Development with the Lattice Boltzmann Method

In: Sustained Simulation Performance 2012

Author

Listed:
  • J. Bernsdorf

    (German Research School for Simulation Sciences GmbH
    RWTH Aachen University)

  • J. Qi

    (German Research School for Simulation Sciences GmbH
    RWTH Aachen University)

  • H. Klimach

    (German Research School for Simulation Sciences GmbH
    RWTH Aachen University)

  • S. Roller

    (German Research School for Simulation Sciences GmbH
    RWTH Aachen University)

Abstract

In this paper, we describe a new approach towards numerical simulation of flow induced early stage development of cerebral aneurysm. The wall shear stress gradient, computed by a CFD simulation inside a bifurcating flow channel, triggers a physiological process leading to the remodelling, and in the worst case, degeneration of the vessel walls. The lattice Boltzmann method, extended by a generic vessel wall model to allow an efficient modification of the flow geometry during run-time, is employed for simulating the modification of the vessel wall, which is considered as initial step for aneurysm formation. First results presented here show a thinning of the vessel wall at locations left and right of the apex of the bifurcation, in good agreement with experimental studies.

Suggested Citation

  • J. Bernsdorf & J. Qi & H. Klimach & S. Roller, 2013. "A Framework for the Numerical Simulation of Early Stage Aneurysm Development with the Lattice Boltzmann Method," Springer Books, in: Michael M. Resch & Xin Wang & Wolfgang Bez & Erich Focht & Hiroaki Kobayashi (ed.), Sustained Simulation Performance 2012, edition 127, pages 115-122, Springer.
    • Handle: RePEc:spr:sprchp:978-3-642-32454-3_10
    DOI: 10.1007/978-3-642-32454-3_10
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