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Multi-block Poisson grid generator for cascade simulations

Author

Listed:
  • Gross, Andreas
  • Fasel, Hermann F.

Abstract

High quality computational grids can greatly enhance the accuracy of turbine and compressor cascade simulations especially when time-dependent results are sought where vortical structures are convected through the computational domain. A technique for generating periodic structured grids for cascade simulations based on the Poisson equations is described. To allow for more complex geometries, the grid can be divided into individual zones or blocks. The grids are generated simultaneously in all blocks, assuring continuity of the grid lines and their slopes across the zonal boundaries. Simple geometric rules can be employed for enforcing orthogonality at block boundaries. The method results in grids with low grid distortion by allowing both, block boundaries and grid points on physical boundaries, to move freely. Results are presented for a linear turbine and a linear compressor cascade.

Suggested Citation

  • Gross, Andreas & Fasel, Hermann F., 2008. "Multi-block Poisson grid generator for cascade simulations," Mathematics and Computers in Simulation (MATCOM), Elsevier, vol. 79(3), pages 416-428.
    • Handle: RePEc:eee:matcom:v:79:y:2008:i:3:p:416-428
    DOI: 10.1016/j.matcom.2008.01.042
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