Airfoil in a high amplitude oscillating stream

Effect of Amplitude and Mean Angle of Attack on Wake of an Oscillating Airfoil

The unsteady wake of an EPPLER 361 airfoil in pitching motion has been investigated in a subsonic wind tunnel by hot-wire anemometry. The airfoil was given the pitching motion about the one-quarter chord axis at reduced frequency of 0182. Streamwise mean velocity profiles (wake profiles) were investigated at several vertically aligned points behind the airfoil at one-quarter chord downstream di...

A Numerical Study of Flow Around an Oscillating Airfoil with High-Order Spectral Difference Method

A high-order spectral difference flow solver for compressible three-dimensional NavierStokes (N-S) equations has been utilized to numerically simulate the unsteady flow over the NACA 0012 airfoil undergoing a sinusoidal pitching motion at the Reynolds (Re) number of 12600. The effects of the reduced frequency and Strouhal number on the wake vortex structure and force coefficient have been studi...

Vortical Patterns in the Wake of an Oscillating Airfoil

Leading Edge Separation Criterion for an Oscillating Airfoil

AD-P004 168 AD-P004 169 TITLE: Superroaneuverability. Wing Rock Flov Phenomena. Potential Applications of Forced Unsteady Flows. Unsteady Stall Penetration of an Oscillating Swept Wing. Simultaneous Flow Visualization and Unsteady Lift Measurement on an Oscillating Lifting Surface. A Visual Study of a Delta Wing in Steady and Unsteady Motion. Comparative Visualization of Accelerating Flow aroun...

CFD of Oscillating Airfoil Pitch Cycle by using PISO Algorithm

This research paper presents the CFD analysis of oscillating airfoil during pitch cycle. Unsteady subsonic flow is simulated for pitching airfoil at Mach number 0.283 and Reynolds number 3.45 millions. Turbulent effects are also considered for this study by using K-ω SST turbulent model. Two-dimensional unsteady compressible Navier-Stokes code including two-equation turbulence model and PISO pr...