Three-dimensional numerical simulation of flows with complex geometries in a regular Cartesian grid and its application to blood flow in cerebral artery with multiple aneurysms

  • Authors:
  • Kensuke Yokoi;Feng Xiao;Hao Liu;Kazuaki Fukasaku

  • Affiliations:
  • Computer and Information Division, RIKEN (The Institute of Physical and Chemical Research), Wako Saitama 351-0198, Japan and Department of Engineering Science and Ocean Engineering, National Taiwa ...;Department of Energy Sciences, Tokyo Institute of Technology, Yokohama 226-8502, Japan;Department of Electronics and Mechanical Engineering, Chiba University, Yayoi, Chiba 263-8522, Japan;Department of Neurosurgery, Kasukabe Central General Hospital, Kasukabe, Saitama 344-0063, Japan

  • Venue:
  • Journal of Computational Physics
  • Year:
  • 2005

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Abstract

We propose a numerical algorithm to compute flows in a complex geometry such as a blood vessel. The algorithm is based on the level set method, the fractional step method, the CIP method and the ghost fluid method in a regular Cartesian grid. The algorithm was applied to various test problems to verify the reliability of method, and numerical results show that the present method can deal with flows in complex geometries such as a bifurcation and multiple aneurysms robustly.