Practical Error Assessment for RANS-Based Drag Prediction

2004 ◽  
Author(s):  
Donald Davis ◽  
Scot Slimon
Keyword(s):  
Error Assessment ◽  
Drag Prediction

Error Assessment and Error Reduction in Production-Level RANS-Based Drag Predictions

2003 ◽  
Author(s):  
Donald W. Davis ◽  
Scot A. Slimon
Keyword(s):  
Fourth Order ◽  
Grid Cell ◽  
Stretch Ratio ◽  
Error Assessment ◽  
Artificial Dissipation ◽  
Grid Approach ◽  
Parametric Studies ◽  
Drag Prediction ◽  
Richardson’S Extrapolation ◽  
Solid Walls

Assessments of the effects of several numerical parameters on RANS-based drag prediction accuracy are presented. The parameters include grid cell size adjacent to solid walls, grid stretch ratio, grid stretch transition, artificial dissipation scheme, and artificial dissipation coefficient. Results from extensive parametric studies on a two-dimensional flat plate are reported. Based on the results of these studies, guidelines for high-accuracy drag predictions using both second- and fourth-order accurate, finite-difference-based solvers are proposed. In addition, error assessments obtained with a single grid using second- and fourth-order accurate solutions are compared to multiple-grid Richardson’s extrapolation approaches. The single-grid approach is shown to provide a significant improvement in both accuracy and error assessment relative to the multiple-grid approach.

Data Summary from First AIAA Computational Fluid Dynamics Drag Prediction Workshop

2003 ◽  
Vol 40 (5) ◽  
Author(s):  
David W. Levy ◽  
Tom Zickuhr ◽  
John Vassberg ◽  
Shreekant Agrawal ◽  
Richard A. Wahls ◽  
...  
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Drag Prediction

Importance of the near wake in drag prediction of bodies of revolution

AIAA Journal ◽  
1976 ◽  
Vol 14 (8) ◽  
pp. 1132-1133 ◽  
Author(s):  
V. C. Patel ◽  
O. Guven
Keyword(s):  
Near Wake ◽  
Bodies Of Revolution ◽  
Drag Prediction

Lagrangian methods for flow climatologies and trajectory error assessment

2004 ◽  
Vol 6 (3-4) ◽  
pp. 335-358 ◽  
Author(s):  
Maria Valdivieso Da Costa ◽  
Bruno Blanke
Keyword(s):  
Error Assessment ◽  
Trajectory Error ◽  
Lagrangian Methods

Base drag prediction on missile configurations

1994 ◽  
Vol 31 (5) ◽  
pp. 759-765 ◽  
Author(s):  
F. G. Moore ◽  
F. Wilcox ◽  
T. Hymer
Keyword(s):  
Drag Prediction ◽  
Base Drag
Sign in / Sign up

Export Citation Format

Share Document