Accession Number:

ADA459195

Title:

Gappy Data: To Krig or Not To Krig

Descriptive Note:

Journal article

Corporate Author:

TECHNICLA UNIV OF ISTANBUL (TURKEY) DEPT OF MECHANICAL ENGINEERING

Personal Author(s):

• Gunes, Hasan
• Sirisup, Sirod
• Karniadakis, George E.

Report Date:

2005-05-01

Pagination or Media Count:

31.0

Abstract:

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.

Descriptors:

• *INTERPOLATION
• DATA PROCESSING
• UNSTEADY FLOW
• IMAGE RECONSTRUCTION
• SPATIAL DISTRIBUTION

Subject Categories:

• Statistics and Probability
• Cybernetics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE