Gappy data: To krig or not to krig?


Gunes H. , SIRISUP S., KARNIADAKIS G.

JOURNAL OF COMPUTATIONAL PHYSICS, cilt.212, ss.358-382, 2006 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 212 Konu: 1
  • Basım Tarihi: 2006
  • Doi Numarası: 10.1016/j.jcp.2005.06.023
  • Dergi Adı: JOURNAL OF COMPUTATIONAL PHYSICS
  • Sayfa Sayıları: ss.358-382

Özet

Data recovery and reconstruction methods for unsteady flow fields with spatio-temporal missing data are studied based on proper orthogonal decomposition (POD) and on Kriging interpolation. It is found that for sufficient temporal resolution, POD-based methods outperform Kriging interpolation. However, for insufficient temporal resolution, large spatial gappiness or for flow fields with black zones, Kriging interpolation is more effective. The comparison is performed based on randomly generated laminar and turbulent flow fields obtained from simulations of uniform flow past a circular cylinder. (c) 2005 Elsevier Inc. All rights reserved.