| Scope and method of study. The current study investigates chordwise phase distributions on two-dimensional lifting surfaces using computational fluid dynamic (CFD) analysis, particularly through the CFD software FLUENT 6.0. A series of CFD simulations are performed in which convecting two-dimensional fluid dynamic disturbances are allowed to propagate over a variety of lifting surfaces (or airfoils). These unsteady forcing scenarios examine the most basic chordwise phase behavior, focusing on the influence of airfoil thickness, camber, mean loading, and neighboring surfaces (e.g., a cascade of airfoils). Finally, a comparison between the computed phase results and experimental data is conducted, in an attempt to provide a definitive explanation of the observed experimental phase trends.; Findings and conclusions. Unsteady surface-pressure results correlate with previous investigations indicating accurately modeled flow physics. (Abstract shortened by UMI.)... |
