Far-Field Drag Analysis of NASA Common Research Model Simulation

A far-field drag analysis was performed on the computational fluid dynamics simulation results of the NASA Common Research Model produced by Japan Aerospace Exploration Agency for the Drag Prediction Workshop 4. Three levels of grid resolution were employed in that simulation, and the far-field analysis successfully obtained values close to the converged drag values estimated by near-field analysis of the convergence study for all levels of grid. Drag decomposition by the far-field analysis also revealed which parts of the flow and which components of the drag varied with angle of attack. Visualized images of drag production were obtained from the far-field analysis and gave good insight into drag production.